API reference · Trust Fabric

Get notified when an action is held, blocked or halted

POST /fabric/webhooks

Last reviewed 2026-11-06

POST /fabric/webhooks

The URL is resolved and every address it answers with is checked before the endpoint is accepted, and again before every delivery attempt. A webhook is a request this server makes on your instruction; an unvalidated one is server-side request forgery with extra steps.

Request body

WebhookRequest (required)

Field	Type	Meaning
`url` required	string	min length `8` · max length `2000`
`events`	array of string
`description`	string or null	max length `200`
`format`	string	cain (signed JSON envelope), splunk_hec, xsiam, datadog, sentinel, slack, teams, pagerduty, otlp, servicenow or jira default `"cain"`
`auth_token`	string or null	the collector's token (SIEM formats), PagerDuty integration key, ServiceNow user:password or Bearer token, Jira email:token:PROJECT, or one OTLP header 'Name: value'; stored, never returned max length `512`

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 onlyRequest 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/webhooks' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"url": "url", "format": "cain"}'

import json, os, urllib.request

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

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

Schemas used

Error · HTTPValidationError · ValidationError · WebhookRequest

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