# Create callback

Source: https://immiscible.fly.dev/docs/api/post-v1-actions-id-callback

`POST /v1/actions/:id/callback`

## Authentication

Agent key. An agent-scoped key (`ask_...`) bound to exactly one agent, or an OAuth access token (`aat_...`) issued to an MCP client for that agent, sent as `Authorization: Bearer`. An agent key may ask, poll and settle. It can never approve, widen a mandate or lift a freeze.

## Path parameters

- `id` (string, required): Action id

## Request

curl:

```bash
curl -X POST "https://immiscible.fly.dev/v1/actions/act_7Qm2c1f0/callback" \
  -H "authorization: Bearer $IMMISCIBLE_AGENT_KEY"
```

Node:

```ts
const res = await fetch('https://immiscible.fly.dev/v1/actions/act_7Qm2c1f0/callback', {
  method: 'POST',
  headers: {
    authorization: `Bearer ${process.env.IMMISCIBLE_AGENT_KEY}`,
  },
});
const data = await res.json();
console.log(res.status, data);
```

Python:

```python
import os
import requests

res = requests.post(
    "https://immiscible.fly.dev/v1/actions/act_7Qm2c1f0/callback",
    headers={
        "authorization": f"Bearer {os.environ['IMMISCIBLE_AGENT_KEY']}",
    },
)
print(res.status_code, res.json())
```