trust.posture · Cortex MCP Docs

Description

Returns trust pairs with autonomy_level, trust_survival_rate, recent_trajectory ('graduating' / 'stable' / 'demoted'), and last_reversal_at. Optionally filtered by action_class. Per ADR-0021 §read-API Family B.

Input schema

Field	Type	Required	Description
`counterparty_id`	`string`	yes	Canonical counterparty id.
`action_class`	`string`	no	Filter to a single action class.

Output shape

typescript

{
  pairs: Array<{
    action_class: string;
    autonomy_level: 1 | 2 | 3;
    trust_survival_rate?: number;
    recent_trajectory: 'graduating' | 'stable' | 'demoted';
    last_reversal_at?: string;
  }>;
}

Example call

JSON-RPC tools/call request body (omit the JSON-RPC envelope when using an SDK; the SDK adds it for you):

jsontools/call params

{ "name": "trust.posture", "arguments": { "counterparty_id": "entity_01HXSARAH", "action_class": "communicate" } }

Example response

Tool results are always wrapped as content[0].text with a stringified JSON body. The shape below is what you get back from JSON.parse(result.content[0].text):

jsonparsed result body

{
  "pairs": [
    { "action_class": "communicate", "autonomy_level": 2, "trust_survival_rate": 0.93, "recent_trajectory": "graduating" }
  ]
}

Errors this tool can return

Code	Meaning
`invalid_arguments`	Tool input failed Zod validation.
`unauthorized`	Missing or invalid bearer token.
`quota_exceeded`	Per-minute, daily call, or daily inference budget exceeded.
`not_found`	The requested resource (action_id, decision_id, counterparty_id, etc.) was not found.

See the full error catalog for resolution steps on each code, plus the standard transport-layer responses (401, 429).