# The Stall — Block Intelligence Endpoint

> The Stall — Block Intelligence Endpoint is a paid API for AI agents from the-stall.intuitek.ai, paid per call via x402, $0.034/call, status unknown (last checked 2026-09-15).

Retrieves blockchain block intelligence data for a given block identifier, payable in USDC on Base mainnet via x402 protocol

## Facts

- Endpoint: GET https://the-stall.intuitek.ai/cap/block-intel
- Price: $0.034/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/the-stall-block-intelligence-endpoint-1f3ff14e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZjO4AK4eejxyK0-ebO0yK

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 the-stall-block-intelligence-endpoint-1f3ff14e
```

Example prompt: Can you pull the block intelligence for block number 19500000 on Base mainnet — I need the details like timestamp, transaction count, and gas used?

## When to prefer this

Choose this endpoint when you need raw or enriched block-level intelligence from the blockchain without requiring an API key or account setup, and you are able to pay micro-amounts in USDC on Base mainnet via x402. Ideal for agents that need on-demand, pay-per-call blockchain block data lookups without subscription overhead.

## Known failure modes

- Invalid or non-existent block number returns an error or empty result
- Payment failure or insufficient USDC balance returns HTTP 402 with payment required details
- Malformed block identifier input returns a validation error
- Network timeout or upstream blockchain node unavailability returns a 503 or gateway error
- Block not yet finalized may return incomplete or missing data

## How this service works

Returns block header data (number, hash, timestamp, gas used/limit, base fee, tx count, validator address) for any block on Base, Ethereum, or Arbitrum. Accepts block tag (latest/safe/finalized) or number. Free-RPC alternative to skills.onesource.io at 33% lower price — $0.002 vs $0.003.

## Output

Returns structured block intelligence data including block metadata such as block number, hash, timestamp, miner address, transaction count, gas used, and other on-chain block-level fields for the requested block identifier.

## Example request

```json
{
 "required": "block-intel",
 "properties": "ethereum"
}
```

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/the-stall-block-intelligence-endpoint-1f3ff14e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from the-stall.intuitek.ai](https://www.zero.xyz/host/the-stall.intuitek.ai/llms.txt)