# BountySignal Market Pulse

> BountySignal Market Pulse is a paid API for AI agents from bountysignal-radar-v2.minhtuan36zzz97948.chatgpt.site, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Returns real-time ETH/USD price, Base chain gas price, and current block number to verify whether a bounty's on-chain funds are sufficient to pay out before spending effort on it.

## Facts

- Endpoint: POST https://bountysignal-radar-v2.minhtuan36zzz97948.chatgpt.site/api/x402/market-pulse?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bountysignal-market-pulse-86873913
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wpGbeWwabt8afrTXgINvU

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 bountysignal-market-pulse-86873913 -d '<json body>'
```

Example prompt: Before I start working on this bounty, can you run a BountySignal market pulse check so I can see the current ETH price, gas fees on Base, and whether the reward is actually worth pursuing right now?

## When to prefer this

Use this endpoint when you need a quick, low-cost ($0.01) real-time snapshot of ETH/USD price, Base gas costs, and block height specifically to evaluate bounty economic viability before committing effort. Prefer it over general price APIs when you want a bundled signal combining price + gas + chain state in one call, especially in agentic workflows that auto-assess on-chain bounties.

## Known failure modes

- Upstream data source unavailable (Coinbase API or Base RPC down) — may return stale or missing price data
- Payment not processed — endpoint requires $0.01 USDC via x402 protocol; unpaid requests are rejected
- Malformed input object — schema requires both 'input' and 'output' fields in the request body
- Rate limiting or provider throttling — high-frequency requests may fail if underlying RPCs are congested

## How this service works

A $5 evidence-first check that tells developers and AI agents whether a bounty can actually pay before they build.

## Output

A JSON object containing the current ETH/USD exchange rate, Base mainnet gas price in Gwei, the latest Base block number, and a list of data source URLs used (e.g. Coinbase exchange rates API and Base mainnet RPC).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ethUsd": 3000,
  "sources": [
   "https://api.coinbase.com/v2/exchange-rates?currency=ETH",
   "https://mainnet.base.org"
  ],
  "baseBlock": 12345678,
  "gasPriceGwei": 0.01
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bountysignal-market-pulse-86873913/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bountysignal-radar-v2.minhtuan36zzz97948.chatgpt.site](https://www.zero.xyz/host/bountysignal-radar-v2.minhtuan36zzz97948.chatgpt.site/llms.txt)