API reference · Trust Fabric

Let one held action proceed

POST /fabric/approvals/{approval_id}/approve

Last reviewed 2026-10-02

POST /fabric/approvals/{approval_id}/approve

Authorises ONE action, once.

Not a standing grant and not a session: the approval is bound to the principal, service and path it was requested for, expires on its own, and is consumed by the next decision that uses it.

Parameters

Name	In	Type	Meaning
`approval_id` required	path	string

Request body

ApprovalDecisionRequest or null

Responses

Status	Meaning	Body
`200`	Successful Response	JSON
`422`	Validation Error	`HTTPValidationError`
`401`	No key, or a key that is not valid	JSON `detail`
`429`	Rate limit for your plan reached; retry after the Retry-After seconds	JSON `detail`

Try it

Your API key X-API-Key Remember the key in this tab onlyapproval_id pathRequest body application/json

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/approvals/<approval_id>/approve' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{}'

import json, os, urllib.request

req = urllib.request.Request('https://cainstudio.online/fabric/approvals/<approval_id>/approve', method='POST',
    headers={"X-API-Key": os.environ["CAIN_API_KEY"], "Content-Type": "application/json"},
    data=json.dumps({}).encode())
with urllib.request.urlopen(req, timeout=60) as r:
    print(r.status, json.load(r))

const res = await fetch("https://cainstudio.online/fabric/approvals/<approval_id>/approve", {
  method: "POST",
  headers: {
    "X-API-Key": process.env.CAIN_API_KEY!,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({}),
});
console.log(res.status, await res.json());

Schemas used

ApprovalDecisionRequest · HTTPValidationError · ValidationError

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