# KeeperPaperSignals
> Cheapest x402 USDC micro-APIs on Base for agents — $0.001 lookups, no API keys.

Base URL: https://signals.edge.report
Catalog (free): https://signals.edge.report/v1/catalog
OpenAPI: https://signals.edge.report/openapi.json
Agent card: https://signals.edge.report/.well-known/agent.json
Pay: x402 USDC on Base (eip155:8453) → 0xE2520f1497ee47645072a6214304807BC3340D58
Rate limit: 100/IP/day/path

## Paid endpoints (HTTP 402 without payment)
- GET /v1/wallet — $0.001 — Base (+ optional Ethereum) ETH/USDC balances and nonce
- GET /v1/token — $0.001 — Token price/mcap/volume via CoinGecko id or Base contract
- GET /v1/polymarket — $0.001 — Polymarket public search — questions and outcome prices
- GET /v1/gas — $0.001 — Current Base (+ optional Ethereum) fee estimates
- GET /v1/signals/funding — $0.001 — Hyperliquid funding extremes (paper)
- GET /v1/signals/spreads — $0.001 — HL vs Bitget funding spreads (paper)
- GET /v1/signals — $0.002 — Full DeFi paper signal bundle

## First call
GET https://signals.edge.report/v1/gas @ $0.001