API reference · Trust Fabric

Decisions used this month against your plan's monthly allowance

GET /fabric/usage

Last reviewed 2026-10-13

GET /fabric/usage

What an engineer needs to plan capacity: decisions recorded this calendar month (UTC), the plan's allowance, and what is left. Counted from this tenant's decision records, so the number matches GET /fabric/decisions. Dry runs (record=false) write no record and are not in the count.

Responses

Status	Meaning	Body
`200`	Successful Response	JSON
`401`	The X-API-Key header is missing, or the key is unknown, revoked or replaced.	`Error`
`403`	The key is valid but may not do this (for example an agent key approving its own held action).	`Error`
`422`	Validation Error	`HTTPValidationError`
`429`	Rate limit or monthly quota reached. Wait for the number of seconds in Retry-After when it is sent.	`Error`

Try it

Your API key X-API-Key Remember the key in this tab only

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 GET 'https://cainstudio.online/fabric/usage' \
  -H "X-API-Key: $CAIN_API_KEY"

import json, os, urllib.request

req = urllib.request.Request('https://cainstudio.online/fabric/usage', method='GET',
    headers={"X-API-Key": os.environ["CAIN_API_KEY"]})
with urllib.request.urlopen(req, timeout=60) as r:
    print(r.status, json.load(r))

const res = await fetch("https://cainstudio.online/fabric/usage", {
  method: "GET",
  headers: {
    "X-API-Key": process.env.CAIN_API_KEY!,
  },
});
console.log(res.status, await res.json());

Schemas used

Error · HTTPValidationError · ValidationError

← See CAIN decide on a real action -- no account needed · all 81 Trust Fabric calls · Where this tenant gets notified →

Try CAIN-42 on your own agents

Create a free account and every new account starts with a 7-day trial of the full platform. Or try the sandbox first, with no account at all.

Create a free account → · Try the sandbox · See the whole ecosystem