CAIN-42 CAIN Studio

API reference · CAIN Guard

Verify Action Plan

POST /fabric/guard/action/verify

Last reviewed 2026-10-03

POST /fabric/guard/action/verify

Verify an action plan against Z3-backed policy rules.

Supports: VALUE_THRESHOLD_APPROVAL, FORBIDDEN_COMBINATION, RATE_LIMIT Fails-closed: UNDECIDABLE = BLOCK

Request body

ActionVerifyRequest (required)

FieldTypeMeaning
plan requiredarray of ActionStep
rules requiredarray of ActionRule
agent_idstringdefault "computer-use-agent"

Responses

StatusMeaningBody
200Successful ResponseJSON
422Validation ErrorHTTPValidationError
401No key, or a key that is not validJSON detail
429Rate limit for your plan reached; retry after the Retry-After secondsJSON detail

Try it

This call changes data in the account the key belongs to.

The request goes from your browser straight to this site. Your key is not stored unless you tick the box, and then only in this tab's session storage.

Code

curl -sS -X POST 'https://cainstudio.online/fabric/guard/action/verify' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"plan": [{"index": 1, "action": "action"}], "rules": [{"id": "id", "type": "type"}], "agent_id": "computer-use-agent"}'

Schemas used

ActionRule · ActionStep · ActionVerifyRequest · HTTPValidationError · ValidationError

← Verify A2A Card · all 10 CAIN Guard calls · Check Hallucination →

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