# ChainQuery Bitcoin Fee Pressure Signal

> ChainQuery Bitcoin Fee Pressure Signal is a paid API for AI agents from intel.chainquery.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns live Bitcoin mempool fee-pressure state (low/moderate/high/severe) and a numeric score in sat/vB

## Facts

- Endpoint: GET https://intel.chainquery.com/v1/fee-pressure
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chainquery-bitcoin-fee-pressure-signal-192d6d4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FYrFy7sGwU0UknomX_oOG

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 chainquery-bitcoin-fee-pressure-signal-192d6d4b
```

Example prompt: What's the current Bitcoin mempool fee pressure right now — is it low, moderate, high, or severe, and what's the sat/vB score?

## When to prefer this

Use this endpoint when you need a real-time, pre-classified Bitcoin fee pressure signal (low/moderate/high/severe) rather than raw mempool data, and when you want a no-API-key, pay-per-call model via x402 micropayments. Prefer this over generic blockchain explorers when you need a simple categorical fee signal with a numeric sat/vB score in a single lightweight call.

## Known failure modes

- Payment failure if x402 micropayment of $0.005 USDC is not properly handled
- Stale data if Bitcoin node connectivity is degraded
- 503 or timeout if the mempool data source is temporarily unavailable
- Invalid response schema if API version mismatch occurs

## How this service works

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Live mempool fee-pressure signal (state low/moderate/high/severe + score in sat/vB).

## Output

Returns a fee pressure state label (low/moderate/high/severe), a numeric fee score in sat/vB, and a freshness timestamp (as_of) indicating when the data was last updated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "as_of": {
       "description": "data freshness timestamp"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chainquery-bitcoin-fee-pressure-signal-192d6d4b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.chainquery.com](https://www.zero.xyz/host/intel.chainquery.com/llms.txt)