arifOS

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arif_init

Initialize a governed AI agent session to enforce constitutional floors and invariant laws before reasoning, evidence gathering, judgment, or execution.

Instructions

arif_init

Input Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed28 schema fields changedv2026.10.16Oct 17, 2026

changedInput schema / additionalProperties
```
Previous value: -falseNew value: +true
```

removedInput schema / properties / _envelope

Removed value: -{
-  "default": null,
-  "title": "Envelope"
-}

removedInput schema / properties / ack_irreversible

Removed value: -{
-  "default": false,
-  "type": "boolean"
-}

removedInput schema / properties / actor_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / actor_signature

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / agent_policy

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / caller_actor_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / client_capabilities

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / context

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / counterparty

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / declared_model_key

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / delegation_mode

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / epoch_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / evidence

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / executor_actor_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / idempotency_key

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / intent

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / mode

Removed value: -{
-  "default": "init",
-  "enum": [
-    "init",
-    "light",
-    "resume",
-    "validate",
-    "canary",
-    "preflight",
-    "triage",
-    "epoch_open",
-    "epoch_seal",
-    "opt_out",
-    "opt_out_profiling"
-  ],
-  "type": "string"
-}

removedInput schema / properties / nonce

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / payload

Removed value: -{
-  "default": null,
-  "title": "Payload"
-}

removedInput schema / properties / previous_session_hash

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / requested_authority

Removed value: -{
-  "default": "OBSERVE_ONLY",
-  "type": "string"
-}

removedInput schema / properties / session_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / sovereign_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / tooling

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / trace_id

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

removedInput schema / properties / verbose

Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

changedOutput schema / (root)

Previous value: -{
-  "additionalProperties": true,
-  "type": "object"
-}New value: +null

Addedv0.1.1Jul 9, 2026

TDQS

D1.6/5.0

Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure, and it discloses nothing. For an initialization tool it should at minimum state side effects, idempotency, required prior state, or what gets created or mutated.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

It is a single token, but this is under-specification rather than conciseness — there is no content to be front-loaded or trimmed. The brevity is a defect, not an efficiency.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An initialization tool with no annotations, no output schema, and five ambiguous siblings needs the description to explain ordering, prerequisites, and effect; it explains none of these. The definition is unusable for correct tool selection.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool takes zero parameters, so there is no parameter semantics to explain and the schema is trivially complete at 100% coverage. Baseline 4 applies per the zero-parameter rule.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tautological: description restates name/title.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no indication of when to call this tool, when not to, or how it relates to any of the five sibling tools. An agent has literally nothing to route on.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server

arif_init

Instructions

Input Schema

Schema Changelog

TDQS

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