# Bitcoin Tip Height Lookup

> Bitcoin Tip Height Lookup is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Returns the current tip height (latest block number) of the Bitcoin blockchain

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/bitcoin/bitcoin-tip-height?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bitcoin-tip-height-lookup-a1bb55df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SKCkTJMbAWI-Sam4IVZmY

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 bitcoin-tip-height-lookup-a1bb55df
```

Example prompt: What is the current Bitcoin blockchain tip height — i.e. how many blocks have been mined so far?

## When to prefer this

Choose this endpoint when you need a quick, no-signup, pay-per-call lookup of the current Bitcoin blockchain tip height using USDC micropayments over x402. Ideal for AI agents that need real-time Bitcoin block height without managing API keys or subscriptions.

## Known failure modes

- Payment not received — returns 402 if x402 payment header is missing or invalid
- Invalid schema parameter — may return an error if schema field is malformed
- Upstream Bitcoin data source temporarily unavailable — may return a 5xx error
- Rate limiting or worker timeout on the Cloudflare edge

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

A JSON response indicating the current tip height of the Bitcoin blockchain — the index of the most recently confirmed block — along with ok and paid status flags.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bitcoin-tip-height-lookup-a1bb55df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)