# Onchain & Trading Intelligence Inbox Poll

> Onchain & Trading Intelligence Inbox Poll is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-16).

Polls a private inbox to retrieve queued messages or results associated with an inbox ID and secret token, returning any messages newer than a given timestamp.

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/inbox/poll
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onchain-trading-intelligence-inbox-poll-85e94669
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-5r-0QwtFby0VJhrCMufx

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 onchain-trading-intelligence-inbox-poll-85e94669 -d '<json body>'
```

Example prompt: Check my trading intelligence inbox (ID: 'inbox_abc123') using my secret token and return any new messages that arrived after timestamp 1718000000000.

## When to prefer this

Use this endpoint when you have already submitted a query to the onchain & trading intelligence platform and need to asynchronously retrieve queued results or messages from your private inbox. Prefer this over direct query endpoints when operating in a polling/async architecture where results are delivered to an inbox rather than returned synchronously.

## Known failure modes

- Invalid or missing inbox ID returns an error or empty result
- Incorrect secret token results in authentication failure or empty/unauthorized response
- No messages newer than the given timestamp returns an empty array
- Service unavailability on Railway hosting returns a 5xx error
- Malformed epoch timestamp causes query to fail or return unexpected results

## How this service works

Webhook inbox: fetch captured messages newer than a timestamp. Send { id, token, since? }.

## Output

Returns an array of inbox messages newer than the specified epoch timestamp, each containing payload data from previously submitted intelligence queries — such as token safety reports, price data, funding rates, or other multichain analytics results.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "id",
  "token"
 ],
 "properties": {
  "id": {
   "type": "string",
   "description": "Inbox id"
  },
  "since": {
   "type": "number",
   "description": "Epoch ms; return newer messages"
  },
  "token": {
   "type": "string",
   "description": "Your secret token"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onchain-trading-intelligence-inbox-poll-85e94669/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)