# BlockRun Smart Followers History

> BlockRun Smart Followers History is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0085/call, status unknown (last checked 2026-10-11).

Retrieves historical smart follower data for social accounts via BlockRun's routing and payment layer

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/surf/social/smart-followers/history?utm_source=zero.xyz
- Price: $0.0085/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-smart-followers-history-c6269331
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vFebr98WRcXC9vY-vRBwh

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-smart-followers-history-c6269331
```

Example prompt: Can you pull the smart follower history for the Twitter account @VitalikButerin so I can see which high-quality accounts have followed them over time?

## When to prefer this

Use this endpoint when you need historical smart follower intelligence for a social account, particularly in crypto/web3 contexts where on-chain payment settlement via USDC is acceptable. Prefer this over generic social analytics APIs when you need the smart-follower classification (high-quality, notable accounts) rather than raw follower counts, and when you are already using BlockRun's routing layer for other AI or DeFi data needs.

## Known failure modes

- Missing or invalid account identifier returns empty or error data object
- Rate limiting or payment failure results in 402 response
- Account not found or no smart follower history available returns empty data
- Network or on-chain settlement issues may delay response

## How this service works

Pay for the outcome. One endpoint for every model, tool and data source an agent needs — each call priced before it runs, at the best value per dollar. 115 models and 100 data and tool APIs.

## Output

Returns a history of smart followers for the specified social account, including data about which high-quality or notable accounts have followed the target over time, delivered as a structured data object settled via USDC on Base or Solana.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-smart-followers-history-c6269331/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)