# BlockRun.AI X Trending

> BlockRun.AI X Trending is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-17).

Fetches the current trending topics or posts on X (formerly Twitter) relevant to crypto/blockchain

## Facts

- Endpoint: POST https://blockrun.ai/api/v1/x/trending?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-ai-1fcd849d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lK40Qwe_bmzPT_PbQCpev

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 blockrun-ai-1fcd849d -d '<json body>'
```

Example prompt: What crypto topics are trending on X right now? Pull the latest trending list from BlockRun.AI.

## When to prefer this

Use this endpoint when you need real-time social sentiment signals from X specifically for crypto/blockchain topics, especially when you want to track what the crypto community is discussing right now. Prefer this over general news APIs when social momentum and trending discourse are the priority.

## Known failure modes

- No trending data available (empty result or 503)
- Rate limit exceeded (429 response)
- Payment failure or insufficient USDC balance (402 response)
- Upstream X data unavailable (503 or timeout)

## Output

A list of currently trending topics, hashtags, or posts on X related to crypto and blockchain, likely including topic names, volume or engagement signals, and timestamps.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-ai-1fcd849d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)