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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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2,935 results- Hhoujin.agentic-jp.comData & research
Dataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered.
BasePolygonSolanahoujin.agentic-jp.comfrom $0.0013 endpoints - AAgentCheckCrypto & DeFi
AgentCheck: independent report on an x402 seller before you pay it. Are its buyers real (repeat wallets on their own money) or funded by the seller itself, measured from 30 days of on-chain payments, plus results of our own paid test purchases where we have them. Query: ?domain=<seller-domain>. GET /sellers (free) lists covered domains.
Baseagentcheck-kohl.vercel.appfrom $0.0023 endpoints - SSmartmoneyMarkets & finance
Global US House Periodic Transaction Report activity for stock-backed trades. Supports overview, latest disclosures, focused buys/sells, active tickers, active members, days, view, and limit.
Basex402.smartmoney.marketfrom $0.013 endpoints - Sscrooge-x402-tool-mill.vercel.appOther services
Watch one public page for 7 days. Checks hourly. When the content hash changes, POST {watch_id,url,old_fingerprint,new_fingerprint,changed_at} to your https callback (5s timeout, one retry). POST JSON {"url":"https://example.com","callback_url":"https://example.com/hook"}. Returns {watch_id,url,expires,status_url}. Free status is GET /v1/watch/:id and does not show the callback. At 500 active watc
Basescrooge-x402-tool-mill.vercel.appfrom $0.0029 endpoints - Oopenwebninja-x402.vercel.appOther services
Fetch current Amazon deals.
Baseopenwebninja-x402.vercel.appfrom $0.015 endpoints - DDecode Morse codeDeveloper tools
Decode international Morse code back into text. Letters are separated by whitespace and words by "/". Unknown Morse sequences are clean 400s.
Basenato.openverbs.comfrom $0.0024 endpoints - Aapi.nameintel.ioSocial & people
Social handle availability check
Baseapi.nameintel.iofrom $0.014 endpoints - AAgent Risk DeskSocial & people
Seller-side check that an Allowance vault receipt on NEAR paid a given account at least a given amount, bound to the seller request hash, at final finality. Returns valid or the reason (not paid yet, wrong payee, amount, asset or request, unknown receipt, not a vault) and the vault code hash read at the same block.
Basex402-services.soldano.workers.devfrom $0.00510 endpoints - Rrobbiegeorgephotography.comAI & agents
Atomic canonical resolution for the registered Robbie George Biography Plate™ identifier. x402 payment grants one endpoint-level retrieval only. It does not grant training, embedding, bulk ingestion, redistribution, resale, synchronization, private-dataset construction, derivative-dataset creation, or Robbie's Razor framework implementation rights.
Baserobbiegeorgephotography.comfrom $0.0051 endpoint - EENTROPY.RIPCrypto & DeFi
Generate cryptographic random bytes
Baseentropy.ripfrom $0.0053 endpoints - UukintelSocial & people
Find a UK company by name. Returns the top 5 matches from the Companies House register with number, name, status and incorporation date. Taster tier - cheap enough to try on a whim before paying for a full profile or verdict.
Baseapi.ukintel.ukfrom $0.0053 endpoints
perps.genexxis.comCrypto & DeFiOpen interest of a coin's perpetual per venue (Binance, Bybit, OKX, Hyperliquid) in contracts and USD with market share, 24h change where history exists (Binance, Bybit), and the Binance long/short account ratio.
Baseperps.genexxis.comfrom $0.0033 endpoints
Product Price LookupImages, audio & videoProduct price lookup for AI agents: give any public product page URL, get the product's current price, currency, availability (in stock or not), name, brand, SKU and images as clean JSON. The page is rendered in a real browser, so JavaScript stores work, and the store's own schema.org product data is read first. For price checks, price monitoring and comparing stores before you buy.
BaseSolanaextract.tollkit.devfrom $0.012 endpoints- Aauditor-x402.onrender.comCrypto & DeFi
Price of ONE token: on-chain USD spot price for a single ERC-20 on Base, from the deepest Uniswap v3 pool vs USDC/WETH (slot0), with the pool/fee tier used and its USD depth. No off-chain feed; thin pools are easy to manipulate. To price MANY tokens at once, use multi-token-price instead (one cheaper call).
Baseauditor-x402.onrender.comfrom $0.00217 endpoints - Sseo.forgemesh.ioOther services
Correct likely spelling errors in an SEO query
Baseseo.forgemesh.iofrom $0.0053 endpoints - Aapi.agentnewsstand.comMarkets & finance
Latest SEC filings for an equity symbol
Baseapi.agentnewsstand.comfrom $0.012 endpoints
Prepaid credit $0.1 (+10%)Images, audio & videoTop up $0.1 USDC and get $0.11 of agentsvc.io credit (10% bonus), valid 180 days. Returns a bearer token: send "Authorization: Bearer <token>" with any /api/v1/proxy/{slug} call or MCP request instead of an x402 payment. Calls are then paid from the balance without an on-chain step (a few milliseconds). Failed calls are refunded. To add to an existing token, send it in the Authorization header wit
BasePolygonArbitrum+1agentsvc.iofrom $0.002128 endpoints- Ddemo.quinnsconveyance.comImages, audio & video
Get the verified rules for chaining AI video clips into a continuous sequence (MiniMax H3 / Wan). Covers true-last-frame chaining, crossfade vs hard cut decisions, and prompting for pace continuity. Use when assembling multi-clip sequences. Do NOT use for single-clip generation.
Basedemo.quinnsconveyance.comfrom $0.0056 endpoints - Ssignalsfeed.comMarkets & finance
Real-time signals feed for AI agents. Covers economic indicators, central bank policy, commodities, equities, AI, semiconductors, and geopolitical risk. Structured signals with credibility scoring. Pay-per-request via x402; free discovery available.
Basesignalsfeed.comfrom $0.013 endpoints - WWaterPulseAI & agents
Live USGS river-gauge tick, deterministic. Answers "what is the flow at this gauge right now", "is this river high or low vs this week". Returns the latest streamflow (discharge, cfs) and gage height (ft) for one USGS site plus the 7-day min/max range, reading count, site name and coordinates, straight from USGS instantaneous values. Unknown sites 404 before payment. No LLM, no key, public domain.
BaseSolanaPolygon+8waterpulse.theaslangroupllc.comfrom $0.0111 endpoints - Nnojunk-stocks.mick8511.workers.devMarkets & finance
Stock Quotes quote: One symbol -> latest price, change, previous close, day high/low, volume, 52-week high/low, currency, exchange, name, market state.
Basenojunk-stocks.mick8511.workers.devfrom $0.0014 endpoints - Nnatur.halowerk.comSearch & web
Returns a single earthquake in decision-ready form, either by its USGS event identifier or as the most significant event matching a search. Magnitude is reported with the magnitude type, because moment magnitude and local magnitude are not interchangeable at the edges of their ranges.
Basenatur.halowerk.comfrom $0.0046 endpoints - Bbase-chain-gas-oracleCrypto & DeFi
Current Base network gas price, read live from a public Base RPC node (eth_gasPrice) and returned in both wei and gwei with the snapshot block it was read at.
Basemarket.561.groupfrom $0.0018 endpoints - Ddisruption.forgemesh.ioSocial & people
Returns matching company names with IDs plus links to their profile and intelligence endpoints — use it to resolve a search into specific companies before paying for deeper data
Basedisruption.forgemesh.iofrom $0.019 endpoints - Nnostr.halowerk.comOther services
Fetches kind 3 contact lists over up to twelve relays. Because kind 3 is replaceable, several relays regularly hold different versions; only the one with the highest created_at is used and the answer states which relays carried that version and how many older versions were seen, so a stale relay never quietly overwrites a current list. At depth 1 the answer is the account and its outgoing follows.
Basenostr.halowerk.comfrom $0.00110 endpoints - Ggblin-sentinel.vercel.appCrypto & DeFi
Call before your agent acts on ETH, BTC or USDC on Base: are the Chainlink feeds fresh, and is any of the three in caution or risk-off? One normal/caution/risk-off verdict per asset from feed age, price moves and a USDC depeg check. Cheap enough to poll before every trade.
Basegblin-sentinel.vercel.appfrom $0.0022 endpoints - Ddefi-signals.orgCrypto & DeFi
Cross-venue perpetual funding rates (OKX, Kraken Futures, dYdX) for any major token. Per-venue annualized rates plus the cross-venue spread in percentage points — a ready-to-use funding arbitrage signal. Clean JSON for trading and research agents.
Basedefi-signals.orgfrom $0.0022 endpoints - Aapi.genesistokenlabs.comSearch & web
Use when an agent needs any web page as clean LLM-ready markdown (no ads, nav, or scripts) for RAG, research, or summarizing. Example input: GET /x402/v1/web-extract?url=https://example.com/article. Example output: {"url":"https://example.com/article","title":"…","markdown":"# Title\n\nBody text…","wordCount":812}
BaseEthereumArbitrum+3api.genesistokenlabs.comfrom $0.0015 endpoints - Xx402.agentfund.netCrypto & DeFi
Chainlink Oracle Price
Basex402.agentfund.netfrom $0.0013 endpoints - KKeylessCrypto & DeFi
LLM chat completion with no API key or signup (fast open model, meta-llama/llama-3.3-70b-instruct). OpenAI-compatible: set your SDK base URL to https://keyless.run/fast/v1. Flat $0.002 per call, up to 1500 output tokens. Charged only on success.
Basekeyless.runfrom $0.0022 endpoints
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.