# approval-gate

> Policy and decision surface for human-held function calls — pre_trigger gate, pending inbox, per-session permission settings, and two notification trigger types.

| field | value |
|-------|-------|
| version | 1.0.0 |
| type | binary |
| repo | https://github.com/iii-hq/workers |
| supported_targets | x86_64-apple-darwin, aarch64-apple-darwin, i686-pc-windows-msvc, x86_64-pc-windows-msvc, aarch64-pc-windows-msvc, x86_64-unknown-linux-gnu, aarch64-unknown-linux-gnu, x86_64-unknown-linux-musl, armv7-unknown-linux-gnueabihf |
| author | iii |

## installation

```sh
iii worker add approval-gate@1.0.0
```

## dependencies

- `iii-state` @ `^0.19.0`
- `configuration` @ `^0.19.0`
- `iii-directory` @ `^1.0.0`
- `session-manager` @ `^1.0.0`

## readme

# approval-gate

The policy and decision surface for human-held function calls
([spec](../tech-specs/2026-06-agentic/approval-gate.md)). Three surfaces, one
worker:

1. **The gate** — `approval::gate`, a `pre_trigger` hook the worker binds
   itself at startup on the harness's `harness::hook::pre-trigger` trigger
   type. It evaluates per-session mode, allow-lists, and inline config
   `rules`, and answers `continue`, `deny`, or `hold`.
2. **The decision plane** — `approval::resolve` plus the per-session settings
   RPCs (`set_mode`, `add_always_allow`, `approve_always`, …). Human/console
   only.
3. **The pending inbox** — an **ephemeral** index of held calls
   (`approval::list-pending` / `approval::get-pending`) plus two trigger types
   (`approval::pending-created` / `approval::pending-resolved`) that
   notification workers and UIs bind to.

The worker keeps **no resolved-approval history**: a record exists only while
a call is held; every record has an explicit deletion path (resolve, turn
abort, session delete). The transcript's `function_result` and the
`pending_resolved` event are the audit trail. Holds do not expire — they wait
until a human resolves or the turn/session is purged.

## Standalone caveat

This worker codes against the greenfield harness contracts
(`harness::hook::pre-trigger`, `harness::function::resolve`,
`harness::turn-completed` — see harness.md § Hooks / § API Reference), which
are **not implemented by the current harness yet**. The harness/session
trigger bindings are best-effort: on an engine without those trigger types the
worker still boots, serves its RPCs, and logs `trigger_type_not_found` for the
absent bindings (restart it after the sibling appears to re-bind). The
`configuration` worker is the one hard dependency — it is enabled by default in
the engine, and a failed register/fetch aborts boot. The integration suite
exercises the harness surface against in-process fakes until harness 1.0 lands.

## Install

```bash
iii worker add approval-gate
```

## Quickstart

```bash
cargo build
./target/debug/approval-gate --url ws://127.0.0.1:49134
```

The authoritative config lives in the engine's `configuration` worker (no
committed `config.yaml`); pass `--config <file>.yaml` only to seed the entry on
its very first registration.

Hold → decide → release, from any client:

```bash
# A held call shows up in the inbox…
iii call approval::list-pending '{}'
# …a human allows it (the harness re-runs it through trigger)…
iii call approval::resolve '{"session_id": "s_1", "function_call_id": "c_1", "decision": "allow"}'
# …or denies it with a reason the model can adapt to.
iii call approval::resolve '{"session_id": "s_1", "function_call_id": "c_1", "decision": "deny", "reason": "not on prod"}'
```

## Permission model

Per-session mode plus two allow-lists, evaluated in this order (ported
unchanged from the proven implementation):

1. `approval::*` / `configuration::*` target → **deny** (`human_only_function`,
   even under `full` — self-escalation defense)
2. mode `full` → allow
3. `approved_always` hit → allow (**every** mode — remembered human decisions)
4. mode `auto` **and** `always_allow` hit → allow (dormant under `manual`)
5. fall through to configuration **`rules`** (first match wins):
   `allow` → allow · `deny` → deny · no match → **hold**

When the configuration entry omits `rules`, the gate denies only this
worker's own `approval::*` surface; every other call **holds**. On startup the
worker seeds/backfills the stored entry so `rules` are editable in the console.

## Custom trigger types

| Type | Fires | Payload |
|---|---|---|
| `approval::pending-created` | a call was held and its inbox record written (async, off the hot path) | `PendingApprovalRecord & { status: "pending" }` — redacted args, session context: self-sufficient for notification copy |
| `approval::pending-resolved` | a pending call left the inbox (exactly once per record) | ids + `outcome: "allow" \| "deny" \| "aborted"`, operator `reason` on deny |

Binding config (both types): `{ session_id?, metadata? }` — `metadata` is a
subset-equality match against the record's denormalized `session_metadata`,
so a multi-tenant notification worker binds to only its own sessions. After a
restart, reconcile with one `approval::list-pending` call.

## Configuration

The whole config — runtime wiring **and** deployment approval defaults — lives
in the single engine configuration entry **`approval-gate`** (operator-edited
via the console's Configuration screen; reactive reload, no polling). There is
**no committed `config.yaml`**. On first boot the worker seeds the entry with
the built-in defaults (including `rules`) so the editor is pre-filled; existing
stored values are never overwritten except to add a missing `rules` field.

```jsonc
{
  "default_mode": "manual",        // manual | auto | full — sessions with no stored settings
  "rules": [                       // first match wins; no match → hold
    "!approval::*",
    { "function": "state::get", "action": "allow", "modes": ["auto"] }
  ]
}
```

`configuration` is a **required boot dependency**: the worker registers the
schema and fetches the authoritative value at startup, and a failed
register/fetch aborts boot (the gate must run on a known, authoritative policy
surface, never a guessed one). When no value is stored yet the built-in
defaults above are seeded and used. **Every field hot-reloads on
`configuration::set` — nothing requires a restart**.

## Agent exposure

Deny **all** `approval::*` and `configuration::*` functions to in-run agents:
`resolve` would let an agent approve its own held calls, and the settings
RPCs are self-escalation (the gate's `human_only_function` rule is the
in-depth backstop). `list_pending` / `get_pending` are read-only and
redacted, but they enumerate held calls **across sessions** — keep them off
agent allow-lists too.

## Local development & testing

```bash
cargo test                                   # lib suites: pure unit + engine-backed handlers
cargo test --test integration               # engine-backed; self-skips without `iii`
cargo fmt --all -- --check
cargo clippy --all-targets --all-features -- -D warnings
./target/debug/approval-gate --manifest      # registry-publish manifest
```

The integration suite spawns a real engine (`III_ENGINE_BIN` or `iii` on
PATH) with `configuration` + `iii-state`, registers the production surface
in-process, and fakes sibling RPCs where noted (`session::get`). With the
harness binary available, `tests/harness_integration.rs` additionally boots the
real harness worker for cross-worker hold / sweep / resolve checks.

## Architecture documentation

Deep documentation lives in [architecture/](architecture/):
[internals.md](architecture/internals.md) for maintainers (evaluation order,
the emit-gate deletion mechanics, lazy seeding, engine facts the code
depends on) and [integration.md](architecture/integration.md) for consumers
(the full function/trigger contract, the harness handoff, deployment notes,
what not to do).

## api reference

```json
{
  "functions": [
    {
      "description": "Add a function to the session's auto-mode trust list (idempotent). Human/console-only.",
      "metadata": {},
      "name": "approval::add-always-allow",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "function_id": {
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "function_id",
          "session_id"
        ],
        "title": "AlwaysAllowMutationRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "AlwaysAllowEntry": {
            "properties": {
              "function_id": {
                "type": "string"
              },
              "granted_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "granted_by": {
                "$ref": "#/definitions/GrantedBy"
              }
            },
            "required": [
              "function_id",
              "granted_at",
              "granted_by"
            ],
            "type": "object"
          },
          "ApprovalSettings": {
            "description": "The stored per-session record (scope `approval_settings`). Reads compute the effective settings from configuration defaults when no record exists — see settings.rs.",
            "properties": {
              "always_allow": {
                "default": [],
                "description": "Consulted only in auto mode.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "approved_always": {
                "default": [],
                "description": "Consulted in every mode — remembered human decisions.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "mode": {
                "allOf": [
                  {
                    "$ref": "#/definitions/PermissionMode"
                  }
                ],
                "default": "manual"
              },
              "mode_set_at": {
                "default": 0,
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              }
            },
            "type": "object"
          },
          "GrantedBy": {
            "oneOf": [
              {
                "enum": [
                  "user_click"
                ],
                "type": "string"
              },
              {
                "description": "Copied from deployment auto-scoped allow rules on first mutation.",
                "enum": [
                  "seed"
                ],
                "type": "string"
              }
            ]
          },
          "PermissionMode": {
            "enum": [
              "manual",
              "auto",
              "full"
            ],
            "type": "string"
          }
        },
        "description": "Shared by every settings mutation RPC: the post-mutation record.",
        "properties": {
          "settings": {
            "$ref": "#/definitions/ApprovalSettings"
          }
        },
        "required": [
          "settings"
        ],
        "title": "SettingsResponse",
        "type": "object"
      }
    },
    {
      "description": "Record a per-session 'approve always' grant (honoured in every mode). Human/console-only.",
      "metadata": {},
      "name": "approval::approve-always",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "function_id": {
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "function_id",
          "session_id"
        ],
        "title": "ApproveAlwaysRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "AlwaysAllowEntry": {
            "properties": {
              "function_id": {
                "type": "string"
              },
              "granted_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "granted_by": {
                "$ref": "#/definitions/GrantedBy"
              }
            },
            "required": [
              "function_id",
              "granted_at",
              "granted_by"
            ],
            "type": "object"
          },
          "ApprovalSettings": {
            "description": "The stored per-session record (scope `approval_settings`). Reads compute the effective settings from configuration defaults when no record exists — see settings.rs.",
            "properties": {
              "always_allow": {
                "default": [],
                "description": "Consulted only in auto mode.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "approved_always": {
                "default": [],
                "description": "Consulted in every mode — remembered human decisions.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "mode": {
                "allOf": [
                  {
                    "$ref": "#/definitions/PermissionMode"
                  }
                ],
                "default": "manual"
              },
              "mode_set_at": {
                "default": 0,
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              }
            },
            "type": "object"
          },
          "GrantedBy": {
            "oneOf": [
              {
                "enum": [
                  "user_click"
                ],
                "type": "string"
              },
              {
                "description": "Copied from deployment auto-scoped allow rules on first mutation.",
                "enum": [
                  "seed"
                ],
                "type": "string"
              }
            ]
          },
          "PermissionMode": {
            "enum": [
              "manual",
              "auto",
              "full"
            ],
            "type": "string"
          }
        },
        "description": "Shared by every settings mutation RPC: the post-mutation record.",
        "properties": {
          "settings": {
            "$ref": "#/definitions/ApprovalSettings"
          }
        },
        "required": [
          "settings"
        ],
        "title": "SettingsResponse",
        "type": "object"
      }
    },
    {
      "description": "Drop the session's stored settings record (revert to configuration defaults).",
      "metadata": {},
      "name": "approval::clear-settings",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "title": "ClearSettingsRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "cleared": {
            "type": "boolean"
          }
        },
        "required": [
          "cleared"
        ],
        "title": "ClearSettingsResponse",
        "type": "object"
      }
    },
    {
      "description": "pre_trigger hook: evaluate the permission model and answer continue / deny / hold; writes the pending inbox record on hold. Called by the harness only.",
      "metadata": {},
      "name": "approval::gate",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "HookCall": {
            "properties": {
              "arguments": {
                "default": null
              },
              "function_id": {
                "type": "string"
              },
              "id": {
                "type": "string"
              }
            },
            "required": [
              "function_id",
              "id"
            ],
            "type": "object"
          }
        },
        "properties": {
          "call": {
            "anyOf": [
              {
                "$ref": "#/definitions/HookCall"
              },
              {
                "type": "null"
              }
            ],
            "description": "pre_trigger payload."
          },
          "depth": {
            "default": 0,
            "description": "Sub-agent depth (hooks run for child turns too).",
            "format": "int64",
            "type": "integer"
          },
          "metadata": {
            "additionalProperties": true,
            "default": null,
            "description": "The per-send tracing metadata.",
            "type": [
              "object",
              "null"
            ]
          },
          "point": {
            "default": null,
            "type": [
              "string",
              "null"
            ]
          },
          "session_id": {
            "type": "string"
          },
          "step": {
            "default": null,
            "format": "int64",
            "type": [
              "integer",
              "null"
            ]
          },
          "turn_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id",
          "turn_id"
        ],
        "title": "HookInput",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "oneOf": [
          {
            "properties": {
              "decision": {
                "enum": [
                  "continue"
                ],
                "type": "string"
              }
            },
            "required": [
              "decision"
            ],
            "type": "object"
          },
          {
            "properties": {
              "decision": {
                "enum": [
                  "deny"
                ],
                "type": "string"
              },
              "reason": {
                "type": "string"
              }
            },
            "required": [
              "decision",
              "reason"
            ],
            "type": "object"
          },
          {
            "properties": {
              "decision": {
                "enum": [
                  "hold"
                ],
                "type": "string"
              }
            },
            "required": [
              "decision"
            ],
            "type": "object"
          }
        ],
        "title": "HookOutput"
      }
    },
    {
      "description": "Read one pending record; null when resolved or unknown.",
      "metadata": {},
      "name": "approval::get-pending",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "function_call_id": {
            "description": "The function call id of the held call.",
            "type": "string"
          },
          "session_id": {
            "description": "The session the pending record belongs to.",
            "type": "string"
          }
        },
        "required": [
          "function_call_id",
          "session_id"
        ],
        "title": "GetPendingRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "anyOf": [
          {
            "$ref": "#/definitions/GetPendingResponse"
          },
          {
            "type": "null"
          }
        ],
        "definitions": {
          "GetPendingResponse": {
            "description": "`null` (handler returns `Option<GetPendingResponse>`) when resolved or unknown.",
            "properties": {
              "pending": {
                "$ref": "#/definitions/PendingApprovalRecord"
              }
            },
            "required": [
              "pending"
            ],
            "type": "object"
          },
          "PendingApprovalRecord": {
            "description": "The inbox payload — shared by both triggers, `list_pending`, and `get_pending`. Self-describing (all ids inside the value) and notification-safe (arguments pass through redaction).",
            "properties": {
              "arguments_excerpt": {
                "default": null,
                "description": "Redacted — safe to forward to notification channels."
              },
              "assistant_excerpt": {
                "description": "First text block of the assistant message that contained this function_call. Best-effort; not derivable from `pre_trigger` `HookInput` in v1, so always omitted today.",
                "type": [
                  "string",
                  "null"
                ]
              },
              "depth": {
                "default": 0,
                "description": "Sub-agent depth (0 = top-level), from `HookInput`.",
                "format": "int64",
                "type": "integer"
              },
              "function_call_id": {
                "type": "string"
              },
              "function_id": {
                "type": "string"
              },
              "pending_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "session_description": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "session_id": {
                "type": "string"
              },
              "session_metadata": {
                "additionalProperties": true,
                "description": "Tenancy + routing (trigger config filter target).",
                "type": [
                  "object",
                  "null"
                ]
              },
              "session_title": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "turn_id": {
                "type": "string"
              }
            },
            "required": [
              "function_call_id",
              "function_id",
              "pending_at",
              "session_id",
              "turn_id"
            ],
            "type": "object"
          }
        },
        "title": "Nullable_GetPendingResponse"
      }
    },
    {
      "description": "Read the session's effective settings (stored record or configuration defaults); never writes.",
      "metadata": {},
      "name": "approval::get-settings",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "title": "GetSettingsRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "AlwaysAllowEntry": {
            "properties": {
              "function_id": {
                "type": "string"
              },
              "granted_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "granted_by": {
                "$ref": "#/definitions/GrantedBy"
              }
            },
            "required": [
              "function_id",
              "granted_at",
              "granted_by"
            ],
            "type": "object"
          },
          "ApprovalSettings": {
            "description": "The stored per-session record (scope `approval_settings`). Reads compute the effective settings from configuration defaults when no record exists — see settings.rs.",
            "properties": {
              "always_allow": {
                "default": [],
                "description": "Consulted only in auto mode.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "approved_always": {
                "default": [],
                "description": "Consulted in every mode — remembered human decisions.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "mode": {
                "allOf": [
                  {
                    "$ref": "#/definitions/PermissionMode"
                  }
                ],
                "default": "manual"
              },
              "mode_set_at": {
                "default": 0,
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              }
            },
            "type": "object"
          },
          "GrantedBy": {
            "oneOf": [
              {
                "enum": [
                  "user_click"
                ],
                "type": "string"
              },
              {
                "description": "Copied from deployment auto-scoped allow rules on first mutation.",
                "enum": [
                  "seed"
                ],
                "type": "string"
              }
            ]
          },
          "PermissionMode": {
            "enum": [
              "manual",
              "auto",
              "full"
            ],
            "type": "string"
          },
          "SettingsSource": {
            "enum": [
              "stored",
              "defaults"
            ],
            "type": "string"
          }
        },
        "properties": {
          "settings": {
            "$ref": "#/definitions/ApprovalSettings"
          },
          "source": {
            "allOf": [
              {
                "$ref": "#/definitions/SettingsSource"
              }
            ],
            "description": "Whether a per-session record exists."
          }
        },
        "required": [
          "settings",
          "source"
        ],
        "title": "GetSettingsResponse",
        "type": "object"
      }
    },
    {
      "description": "The pending inbox across sessions, with tenancy filters; the catch-up path for notification workers after a restart.",
      "metadata": {},
      "name": "approval::list-pending",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "cursor": {
            "default": null,
            "description": "Opaque.",
            "type": [
              "string",
              "null"
            ]
          },
          "limit": {
            "default": null,
            "description": "Default 50.",
            "format": "uint",
            "minimum": 0,
            "type": [
              "integer",
              "null"
            ]
          },
          "metadata": {
            "additionalProperties": true,
            "default": null,
            "description": "Equality match against `session_metadata` (tenancy).",
            "type": [
              "object",
              "null"
            ]
          },
          "session_id": {
            "default": null,
            "type": [
              "string",
              "null"
            ]
          }
        },
        "title": "ListPendingRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "PendingApprovalRecord": {
            "description": "The inbox payload — shared by both triggers, `list_pending`, and `get_pending`. Self-describing (all ids inside the value) and notification-safe (arguments pass through redaction).",
            "properties": {
              "arguments_excerpt": {
                "default": null,
                "description": "Redacted — safe to forward to notification channels."
              },
              "assistant_excerpt": {
                "description": "First text block of the assistant message that contained this function_call. Best-effort; not derivable from `pre_trigger` `HookInput` in v1, so always omitted today.",
                "type": [
                  "string",
                  "null"
                ]
              },
              "depth": {
                "default": 0,
                "description": "Sub-agent depth (0 = top-level), from `HookInput`.",
                "format": "int64",
                "type": "integer"
              },
              "function_call_id": {
                "type": "string"
              },
              "function_id": {
                "type": "string"
              },
              "pending_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "session_description": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "session_id": {
                "type": "string"
              },
              "session_metadata": {
                "additionalProperties": true,
                "description": "Tenancy + routing (trigger config filter target).",
                "type": [
                  "object",
                  "null"
                ]
              },
              "session_title": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "turn_id": {
                "type": "string"
              }
            },
            "required": [
              "function_call_id",
              "function_id",
              "pending_at",
              "session_id",
              "turn_id"
            ],
            "type": "object"
          }
        },
        "properties": {
          "next_cursor": {
            "type": [
              "string",
              "null"
            ]
          },
          "pending": {
            "description": "Ordered by pending_at ascending.",
            "items": {
              "$ref": "#/definitions/PendingApprovalRecord"
            },
            "type": "array"
          }
        },
        "required": [
          "pending"
        ],
        "title": "ListPendingResponse",
        "type": "object"
      }
    },
    {
      "description": "Internal: hot-reload approval-gate from the authoritative configuration when it changes — swaps the per-call snapshot (timeouts + approval defaults).",
      "metadata": {},
      "name": "approval::on-config-change",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "description": "Internal `approval::on-config-change` trigger payload. The handler re-fetches the authoritative configuration, so this carries only the (advisory) configuration id; a struct (not `Value`) keeps the request schema concrete and unknown fields are ignored.",
        "properties": {
          "id": {
            "default": null,
            "description": "Configuration id that changed (advisory; the handler re-fetches the value).",
            "type": [
              "string",
              "null"
            ]
          }
        },
        "title": "OnConfigChangeEvent",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "description": "Ack returned by the internal `approval::on-config-change` handler.",
        "properties": {
          "ok": {
            "type": "boolean"
          }
        },
        "required": [
          "ok"
        ],
        "title": "OnConfigChangeResponse",
        "type": "object"
      }
    },
    {
      "description": "Internal: session::deleted handler (purge the session's settings and pending records).",
      "metadata": {},
      "name": "approval::on-session-deleted",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "description": "`session::deleted` payload (only the field we read).",
        "properties": {
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "title": "SessionDeletedEvent",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "description": "Acknowledgement returned by the internal trigger-bound handlers (`on-config-change`, `on-session-deleted`, `on-turn-completed`) whose result is not consumed by callers — kept typed so the response schema is concrete rather than the permissive `AnyValue` (\"unknown\") schema a `Value` return would emit.",
        "properties": {
          "ok": {
            "type": "boolean"
          }
        },
        "required": [
          "ok"
        ],
        "title": "EventAck",
        "type": "object"
      }
    },
    {
      "description": "Internal: harness::turn-completed handler (purge the turn's pending records).",
      "metadata": {},
      "name": "approval::on-turn-completed",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "description": "`harness::turn-completed` payload (only the field we read).",
        "properties": {
          "turn_id": {
            "type": "string"
          }
        },
        "required": [
          "turn_id"
        ],
        "title": "TurnCompletedEvent",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "description": "Acknowledgement returned by the internal trigger-bound handlers (`on-config-change`, `on-session-deleted`, `on-turn-completed`) whose result is not consumed by callers — kept typed so the response schema is concrete rather than the permissive `AnyValue` (\"unknown\") schema a `Value` return would emit.",
        "properties": {
          "ok": {
            "type": "boolean"
          }
        },
        "required": [
          "ok"
        ],
        "title": "EventAck",
        "type": "object"
      }
    },
    {
      "description": "Remove a function from the session's auto-mode trust list (no-op when absent). Human/console-only.",
      "metadata": {},
      "name": "approval::remove-always-allow",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "function_id": {
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "function_id",
          "session_id"
        ],
        "title": "AlwaysAllowMutationRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "AlwaysAllowEntry": {
            "properties": {
              "function_id": {
                "type": "string"
              },
              "granted_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "granted_by": {
                "$ref": "#/definitions/GrantedBy"
              }
            },
            "required": [
              "function_id",
              "granted_at",
              "granted_by"
            ],
            "type": "object"
          },
          "ApprovalSettings": {
            "description": "The stored per-session record (scope `approval_settings`). Reads compute the effective settings from configuration defaults when no record exists — see settings.rs.",
            "properties": {
              "always_allow": {
                "default": [],
                "description": "Consulted only in auto mode.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "approved_always": {
                "default": [],
                "description": "Consulted in every mode — remembered human decisions.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "mode": {
                "allOf": [
                  {
                    "$ref": "#/definitions/PermissionMode"
                  }
                ],
                "default": "manual"
              },
              "mode_set_at": {
                "default": 0,
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              }
            },
            "type": "object"
          },
          "GrantedBy": {
            "oneOf": [
              {
                "enum": [
                  "user_click"
                ],
                "type": "string"
              },
              {
                "description": "Copied from deployment auto-scoped allow rules on first mutation.",
                "enum": [
                  "seed"
                ],
                "type": "string"
              }
            ]
          },
          "PermissionMode": {
            "enum": [
              "manual",
              "auto",
              "full"
            ],
            "type": "string"
          }
        },
        "description": "Shared by every settings mutation RPC: the post-mutation record.",
        "properties": {
          "settings": {
            "$ref": "#/definitions/ApprovalSettings"
          }
        },
        "required": [
          "settings"
        ],
        "title": "SettingsResponse",
        "type": "object"
      }
    },
    {
      "description": "Apply a human decision to a held call: release it for execution (allow) or deliver a denial (deny). Human/console-only.",
      "metadata": {},
      "name": "approval::resolve",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "ResolveDecision": {
            "enum": [
              "allow",
              "deny"
            ],
            "type": "string"
          }
        },
        "properties": {
          "decision": {
            "$ref": "#/definitions/ResolveDecision"
          },
          "function_call_id": {
            "type": "string"
          },
          "reason": {
            "default": null,
            "description": "Surfaced to the model on deny.",
            "type": [
              "string",
              "null"
            ]
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "decision",
          "function_call_id",
          "session_id"
        ],
        "title": "ResolveRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "resolved": {
            "description": "false: unknown/already-resolved pending call.",
            "type": "boolean"
          },
          "turn_resumed": {
            "description": "Passthrough from harness::function::resolve.",
            "type": [
              "boolean",
              "null"
            ]
          }
        },
        "required": [
          "resolved"
        ],
        "title": "ResolveResponse",
        "type": "object"
      }
    },
    {
      "description": "Set the session's permission mode (manual / auto / full). Human/console-only.",
      "metadata": {},
      "name": "approval::set-mode",
      "request_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "PermissionMode": {
            "enum": [
              "manual",
              "auto",
              "full"
            ],
            "type": "string"
          }
        },
        "properties": {
          "mode": {
            "$ref": "#/definitions/PermissionMode"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "mode",
          "session_id"
        ],
        "title": "SetModeRequest",
        "type": "object"
      },
      "response_schema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "definitions": {
          "AlwaysAllowEntry": {
            "properties": {
              "function_id": {
                "type": "string"
              },
              "granted_at": {
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              },
              "granted_by": {
                "$ref": "#/definitions/GrantedBy"
              }
            },
            "required": [
              "function_id",
              "granted_at",
              "granted_by"
            ],
            "type": "object"
          },
          "ApprovalSettings": {
            "description": "The stored per-session record (scope `approval_settings`). Reads compute the effective settings from configuration defaults when no record exists — see settings.rs.",
            "properties": {
              "always_allow": {
                "default": [],
                "description": "Consulted only in auto mode.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "approved_always": {
                "default": [],
                "description": "Consulted in every mode — remembered human decisions.",
                "items": {
                  "$ref": "#/definitions/AlwaysAllowEntry"
                },
                "type": "array"
              },
              "mode": {
                "allOf": [
                  {
                    "$ref": "#/definitions/PermissionMode"
                  }
                ],
                "default": "manual"
              },
              "mode_set_at": {
                "default": 0,
                "description": "ms epoch",
                "format": "int64",
                "type": "integer"
              }
            },
            "type": "object"
          },
          "GrantedBy": {
            "oneOf": [
              {
                "enum": [
                  "user_click"
                ],
                "type": "string"
              },
              {
                "description": "Copied from deployment auto-scoped allow rules on first mutation.",
                "enum": [
                  "seed"
                ],
                "type": "string"
              }
            ]
          },
          "PermissionMode": {
            "enum": [
              "manual",
              "auto",
              "full"
            ],
            "type": "string"
          }
        },
        "description": "Shared by every settings mutation RPC: the post-mutation record.",
        "properties": {
          "settings": {
            "$ref": "#/definitions/ApprovalSettings"
          }
        },
        "required": [
          "settings"
        ],
        "title": "SettingsResponse",
        "type": "object"
      }
    }
  ],
  "triggers": [
    {
      "description": "A function call was held for human approval and its inbox record written. Payload: PendingApprovalRecord (redacted args, session context, expiry). Bind notification workers here.",
      "invocation_schema": {},
      "metadata": {},
      "name": "approval::pending-created",
      "return_schema": {}
    },
    {
      "description": "A pending approval left the inbox (outcome: allow | deny | timeout | aborted). Emitted exactly once per record; lets UIs clear badges.",
      "invocation_schema": {},
      "metadata": {},
      "name": "approval::pending-resolved",
      "return_schema": {}
    }
  ]
}
```