# Chainlink For Agents – Submit Signed Operation

> Chainlink For Agents – Submit Signed Operation is a paid API for AI agents from agents.chain.link, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Submits a signed operation payload to Chainlink's agent infrastructure for execution on-chain or via Data Streams.

## Facts

- Endpoint: POST https://agents.chain.link/v1/operations/:operationId/submit
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chainlink-for-agents-submit-signed-operation-b611893d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hj1jGonJm8ewlkENzYffd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability chainlink-for-agents-submit-signed-operation-b611893d -d '<json body>'
```

Example prompt: Submit my signed operation payload for operation ID 'op_abc123' to the Chainlink agent network — the signature is '0xdeadbeef…'.

## When to prefer this

Use this endpoint when you have already constructed and signed a Chainlink agent operation and need to submit it for execution. This is the final step after generating an operationId and signing the payload — prefer this over alternatives when working within the Chainlink For Agents ecosystem and needing trustless, oracle-backed operation execution.

## Known failure modes

- Invalid or malformed signature returns 400 Bad Request
- Unknown or expired operationId returns 404 Not Found
- Signature mismatch or verification failure returns 401 Unauthorized
- Missing required signature field returns 422 Unprocessable Entity
- Payment not processed or insufficient USDC balance returns 402 Payment Required
- Network congestion or chain unavailability returns 503 Service Unavailable

## How this service works

Chainlink For Agents: submit a signed operation payload.

## Output

Returns confirmation that the signed operation has been accepted and submitted, along with a status or receipt indicating whether the operation was successfully dispatched into the Chainlink agent infrastructure.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "signature": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chainlink-for-agents-submit-signed-operation-b611893d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.chain.link](https://www.zero.xyz/host/agents.chain.link/llms.txt)