the402 x402 endpoint directory

Canonical harness tear-sheet — one call returns totals (fires / boundary / silent / first-ever), top-5 fires by confid

Inspect Base transaction status and receipt evidence in one call, including success, revert, or pending state, confirm

Current USD/KRW exchange rate (ECB reference via Frankfurter, fallback open.er-api.com).

Tx Preflight - Simulate a transaction before you sign it and get a safe / warn / danger verdict.

Use when an agent needs trading signals. Returns Bounded crypto trading signal from free DefiLlama DEX volume, chain T

Get latest crypto news with sentiment scores and token mentions

PoolTogether draw-schema — volgende draw op Base/Arb/OP/Scroll

Signed plug-in solar legality record for one US state

Bundle six official World Development Indicators into one normalized country snapshot with latest and previous GDP, gr

Geocode one structural address in the United States, Puerto Rico, or U.S. Island Areas with normalized U.S. Census MAF

Retrieve newest-first incoming and outgoing Circle USDC Transfer events for one address across a validated, bounded Ba

Execute one bounded read-only eth_call against a resolved Base mainnet block, retain call and block evidence, and opti

Inspect Base mainnet contract bytecode, common token metadata, and ERC-165, ERC-721, and ERC-1155 interface signals at

Check a public domain's email authentication and anti-spoofing posture using MX, SPF, DMARC, caller-selected DKIM, MTA

Real crypto market data in one batched call: price, market cap, market-cap rank, 24h volume/high/low/change, circulati

Live Bitcoin mempool snapshot: unconfirmed transaction count, total virtual size and total fees, a fee-rate histogram

Check GitHub's official status source for current incidents, component health, and scheduled maintenance before an age

Check one public AWS, Google Cloud, Azure, DigitalOcean, or Linode service/location status source and return a terse a

Historical price data with configurable timeframes (1H/6H/1D/1W/1M/ALL)

Geocode a Japanese (JP) address to WGS84 lat/lng coordinates, with a granularity level (prefecture → city → town → cho

Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG

Run a read-only transaction simulation with eth_call and eth_estimateGas against a supported public EVM RPC without si

Locus public pay-per-use API

Use when an agent needs wallet analyze. Returns Base wallet balances, bounded transfers, token holdings and counterpar

Use when an agent needs mpp admission gate. Returns Admit one service from the live MPP public catalog for a task, pri

Resolve an occupation title to ranked SOC candidates, each with the SOC code, official title and a match score. The ch

Resolve a US location to ranked OFLC wage-area candidates, each with the area code, area name and state. Accepts a cou

Catalog of covered stablecoins ranked by market cap, from the DefiLlama stablecoins feed. Each row carries symbol, nam

Catalog of tokenized real-world-asset products ranked by TVL, from the DefiLlama RWA universe. Each row carries slug,

Daily listed options open interest per instrument: strike, expiry, option type, open interest, mark implied volatility

Five minute open interest history for the major perpetuals in base units and USD, normalised across symbols and retain

CFTC Commitments of Traders weekly history for crypto futures with the columns the free CSV does not carry: dealer lon

Upcoming and very-recent US economic data release dates - CPI, employment, GDP, FOMC minutes, Treasury auctions, etc.

OpenAI-compatible chat completions gateway (alias of /v1/chat/completions for api/v1-style base URLs) — standard reque

Scrape any web page: URL to Markdown / HTML to Markdown for LLM context. Readability article extraction strips nav, ad

Option chain for a US-listed ticker: all listed expiration dates, the strike ladder, and per-contract bid/ask/last/vol

Resolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns CIK i

Recommended Bitcoin transaction fee-rates in sat per vByte across five confirmation horizons (fastest, half hour, hour

Live gas price snapshot for a chain - slow / standard / fast tiers in gwei, plus the latest base fee. Sampled from eth

Convert an amount between currencies at the official European Central Bank reference rate. Answers "what is the USD to

Look up a current RxNorm, ICD-10-CM, or LOINC display from an exact code. Use when an agent already has a code and mus

Screen a party name against the current official U.S. Treasury OFAC SDN primary-name list and return transparent poten

Inspect live bytecode and common EIP-1967 and EIP-1167 storage patterns to identify upgradeable contract proxy evidenc

Score up to 100 texts with a transparent deterministic positive and negative keyword lexicon.

Extract emails, URLs, money values, dates, and candidate capitalized phrases using transparent deterministic patterns.

Create a deterministic extractive summary by ranking and selecting sentences from the supplied text.

Check whether a password hash appears in the Have I Been Pwned breach corpus using k-anonymity: the caller sends only

Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the

OpenAI-compatible chat completions gateway — standard /v1/chat/completions path and request shape, model chosen in the

One-call email verification for lead qualification and list hygiene: RFC 5322 syntax check, then a live MX lookup over