pyfile-api

Utility API endpoints — pay-per-call, no accounts, no API keys.

Website: pyfile-toolkit.github.io — overview, pricing and discovery across x402 (USDC), Lightning (L402) and Nano.

What it is

A small set of deterministic utility endpoints that an agent can buy one call at a time. An unpaid request returns HTTP 402 with machine-readable payment terms; pay and retry.

Endpoints

Endpoint	What it returns
GET /data/hash	SHA-256 / SHA-512 / keccak-256 of a string
GET /data/hmac	HMAC (sha256/sha512)
GET /data/encode	Base64 / hex / URL encoding
GET /data/decode	Base64 / hex / URL decoding
GET /data/abi	Ethereum function-selector lookup
GET /data/bolt11/decode	Decode a Lightning BOLT11 invoice
GET /data/dns	DNS-over-HTTPS lookup
GET /data/whois	Domain registration (RDAP)
GET /data/ip	IP geolocation
GET /data/url	URL metadata
GET /data/ct	Certificate transparency
GET /data/network/status	Block heights / node status
GET /data/crypto	Crypto spot prices
GET /data/crypto/history	Token price history
GET /data/crypto/trending	Trending coins
GET /data/defi/yields	DeFi yield pools (DefiLlama)
GET /data/fx	FX rates
GET /data/gas/base	Base L2 gas price
GET /data/wallet/balance	EVM wallet native balance
GET /data/btc/fees	Bitcoin fee estimates
GET /data/btc/address	Bitcoin address balance
GET /data/wiki	Wikipedia summary
GET /data/weather	Current weather (Open-Meteo)
GET /data/hn/top	Hacker News top stories
GET /data/github/trending	GitHub repos by stars
GET /data/npm	npm weekly downloads

Free: GET /health, GET /openapi.json, GET /.well-known/x402.

Payment

• x402 — USDC on Base, Polygon or Arbitrum. Unpaid request returns 402 with a payment-required header (base64 JSON accepts[]).
• Lightning (L402) — the GET variants return a WWW-Authenticate: L402 challenge with a BOLT11 invoice.
• Nano (XNO) — 402 carries pay_to, price_raw and quote=sha256(body).

Source

Part of pyfile-toolkit. Related: nano-llm-api, l402-llm-mcp.