the402 x402 endpoint directory

MCP servers, called rather than listed · we called 16,923 of them · search their tools

Every x402 endpoint we can find, each one called to see what it actually answers and what it quotes. Other directories list what providers claim. This one reports what the endpoint did when we asked it, and says plainly where we could not tell.

Last verified 2026-10-13. We parse the payment challenge, we do not complete a payment.

EndpointStatusPriceNetworkSpecChecked
textdistance.openverbs.com v1 damerau
Damerau-Levenshtein distance — like Levenshtein but also counts adjacent transpositions as a single edit — plus a norm
no payment challenge 4000 atomic - - POST 37d ago
textdistance.openverbs.com v1 levenshtein
Levenshtein edit distance (insertions, deletions, substitutions) between two strings, plus a normalized similarity in
no payment challenge 4000 atomic - - POST 37d ago
phonetic.openverbs.com v1 compare
Report whether two tokens sound alike under a chosen algorithm (soundex, metaphone or double-metaphone; default double
no payment challenge 2000 atomic - - POST 37d ago
phonetic.openverbs.com v1 double-metaphone
Encode a word with Double Metaphone, returning a primary and a secondary code to capture alternate pronunciations (use
no payment challenge 2000 atomic - - POST 37d ago
phonetic.openverbs.com v1 metaphone
Encode a word with the Metaphone algorithm — more accurate than Soundex for English pronunciation.
no payment challenge 2000 atomic - - POST 37d ago
phonetic.openverbs.com v1 soundex
Encode a word with the classic Soundex algorithm (letter + 3 digits) for phonetic matching of names.
no payment challenge 2000 atomic - - POST 37d ago
ulid.openverbs.com v1 decode
Validate a ULID and extract its embedded timestamp and time/random components.
no payment challenge 2000 atomic - - POST 37d ago
ulid.openverbs.com v1 generate
Generate one or more lexicographically sortable ULIDs (monotonic within a call).
no payment challenge 2000 atomic - - POST 37d ago
uuid.openverbs.com v1 inspect
Validate a UUID and report its version and variant.
no payment challenge 2000 atomic - - POST 37d ago
uuid.openverbs.com v1 generate
Generate one or more UUIDs. Supports v4 (random), v1/v7 (time), and v3/v5 (namespaced).
no payment challenge 2000 atomic - - POST 37d ago
geo.openverbs.com v1 geohash
Encode a coordinate to a geohash and return its bounding box and 8 neighbors.
no payment challenge 2000 atomic - - POST 37d ago
geo.openverbs.com v1 distance
Distance and initial bearing between two coordinates.
no payment challenge 2000 atomic - - POST 37d ago
api.nohumans.directory listings verdict
nohumans.directory pre-spend verdict for one listing: probe history, payTo age and stability, paid-delivery outcome, v
not probed 5000 atomic - - never
mpp.tracefast.xyz entities portfolio
TraceFast live Ethereum data: everything an address holds, valued in USD — token balances and native ETH, up to 100 po
not probed 100000 atomic - - never
mpp.tracefast.xyz tokens balance
TraceFast live Ethereum data: balanceOf(address) for one token at the end of a block, read from contract storage. A to
not probed 20000 atomic - - never
mpp.tracefast.xyz addresses counterparties
TraceFast knowledge graph: top counterparties of an Ethereum address, current or as of a block. Up to 100 addresses it
not probed 100000 atomic - - never
x402.ochinimus.app api venue-liq-share
Which venue is flushing whom: per-exchange liquidation share (Bybit/OKX/Binance) with long/short split and biggest pri
answers 402 20000 atomic solana v2 GET 37d ago
x402.ochinimus.app api squeeze-score
FLAGSHIP: short-squeeze / long-flush score 0-100 for any USDT perp. Composite of funding, long/short crowding, 24h OI
answers 402 100000 atomic solana v2 GET 37d ago
x402.ochinimus.app api tvl
TVL for any DeFi protocol (with 1d/7d change) or top-15 chains ranking. DefiLlama-backed.
answers 402 5000 atomic solana v2 GET 37d ago
justin-pacific-exchange-revelation.trycloudflare.com v1 screen
Screen a person/company/vessel name against OFAC (SDN + Consolidated), UN, EU, UK, Canada, Australia, France, Switzerl
needs params 20000 atomic - - POST 37d ago
witness-controlled-testnet-v019.witness-test.workers.dev v1 contract-witness
Produce a concrete independently revalidated JSON-Schema/MCP backward-compatibility witness before merge/deploy. UNKNO
no payment challenge 1000 atomic - - POST 37d ago
openrelay.hggfffdfy687.workers.dev polymarket markets
List active Polymarket prediction markets, sortable by volume or liquidity. Returns question, prices, outcomes, end da
answers 402 3000 atomic solana v2 POST 37d ago
openrelay.hggfffdfy687.workers.dev tx status
Check transaction status on Base or Solana. Returns confirmed, status, block/slot, gas, err.
answers 402 1000 atomic solana v2 POST 37d ago
openrelay.hggfffdfy687.workers.dev base gas
Current Base mainnet gas price with slow/standard/fast tiers in gwei.
answers 402 1000 atomic solana v2 POST 37d ago
openrelay.hggfffdfy687.workers.dev wallet balance
Read USDC or native token balance for an address on Base or Solana. Body: {chain, address, token?}.
answers 402 1000 atomic solana v2 POST 37d ago
watchtower-api.com v1 screen
Screen a person/company/vessel name against OFAC (SDN + Consolidated), UN, EU, UK, Canada, Australia, France, Switzerl
needs params 20000 atomic - - POST 37d ago
api.usenami.io depth aggregate
Sized-depth quote for one crypto perpetual on one venue: best bid/ask plus precomputed slippage at $1K/$5K/$10K notion
not probed 10000 atomic - - never
agents.x402stock.xyz v1 quote
Get the latest available price for any US-listed stock: the most recent 1-minute bar close plus today's OHLCV, change,
not probed 10000 atomic - - never
modelprices.xyz llm price
Single-model price lookup: current per-token cost for one AI model by id (e.g. claude-sonnet-5, gpt-5, gemini-3-pro) —
not probed 3000 atomic - - never
modelprices.xyz llm limit
Single-model capability lookup: context window size, max output tokens, and vision/audio/function-calling/reasoning su
not probed 3000 atomic - - never
api.robinx.io verdict
Composite token buy-risk verdict
not probed 20000 atomic - - never
api.gocreativeai.com seo traffic
Website Traffic API — real SimilarWeb-grade traffic data for a domain: global/country/category rank, monthly visits tr
not probed 50000 atomic - - never
the-composer.fly.dev intent
Describe a goal in words; get candidate transactions ranked by whether they actually simulate
answers 402 20000 atomic solana v2 POST 37d ago
the-composer.fly.dev tx batch
Compose many instructions into a signable transaction or bundle
answers 402 5000 atomic solana v2 POST 37d ago
the-composer.fly.dev tx build
Build one unsigned transaction from an IDL instruction
answers 402 2000 atomic solana v2 POST 37d ago
blockrun.ai price MU
US Stock realtime price for MU
no payment challenge 2000 atomic - - POST 37d ago
blockrun.ai price SPY
US Stock realtime price for SPY
no payment challenge 2000 atomic - - POST 37d ago
blockrun.ai markets volume
Get historical cumulative volume data for a market
not probed 8500 atomic - - never
blockrun.ai leaderboard market
Get leaderboard for a specific market
not probed 8500 atomic - - never
blockrun.ai polymarket candlesticks
Get historical OHLCV candlestick data for a market
not probed 8500 atomic - - never
blockrun.ai market smart-money
View smart money positioning on a specific market
not probed 8500 atomic - - never
blockrun.ai wallet similar
Find wallets with similar market portfolios
not probed 8500 atomic - - never
blockrun.ai leaderboard market
Get leaderboard for a specific market
not probed 8500 atomic - - never
the-composer.fly.dev yolo
Say what you want in words; it is built, simulated, and repaired from the simulation errors until it works or the budg
answers 402 120000 atomic solana v2 POST 37d ago
agents.x402stock.xyz v1 prev-close
Open, high, low, close, volume, and VWAP for a ticker's most recent completed trading day. One call returns one bar, h
not probed 10000 atomic - - never
agents.x402stock.xyz v1 fred
Pull a key market-signal macro series from the Federal Reserve (FRED) by slug: vix, yield-curve-10y-2y, yield-curve-10
not probed 10000 atomic - - never
api.linkedpanda.com v1 profiles
LinkedIn profile enrichment API for one B2B lead
not probed 50000 atomic - - never
api.apify.com acts run-sync
Apify Store is the largest marketplace of tools for AI agents. Extract data from any website and automate your workflo
not probed 1000000 atomic - - never
test.x402labs.sh scraping scrape
Scraping endpoint
needs params 10000 atomic - - POST 37d ago
api.apify.com actors run-sync-get-dataset-items
Apify Store is the largest marketplace of tools for AI agents. Extract data from any website and automate your workflo
not probed 1000000 atomic - - never
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