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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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4,273 results- VVoipStoreAI & agents
Poll one order status; when the SMS has arrived the response carries sms_code and sms_text. Poll until status is received/completed/expired. Automated clients accept the Agent Access Addendum: https://voipstore.xyz/terms/agents
Baseapi.voipstore.xyzfrom $0.0012 endpoints - Aapi.vinoandviews.onlineOther services
Deterministic read-only spend policy verdict for amount, destination, and approval ceiling. Caller supplies policy; unknown targets require review.
Baseapi.vinoandviews.onlinefrom $0.151 endpoint - Aapi.vindexapi.devOther services
No description yet.
Baseapi.vindexapi.devfrom $0.011 endpoint - Aapi.vibe.airforceSocial & people
Search recent tweets by keyword (last 7 days). Returns tweets with author profiles and engagement metrics.
Baseapi.vibe.airforcefrom $0.00142 endpoints - Aapi.tweetx402.comSocial & people
No description yet.
Baseapi.tweetx402.comfrom $0.000518 endpoints - TTollexCrypto & DeFi
First paid call: confirms your x402 integration end to end and returns live payment-rail and chain state with a signed receipt.
Baseapi.tollex.orgfrom $0.00791 endpoint - tokenizen ownership receiptsCrypto & DeFi
Ownership verification with a signed receipt. The receipt is the product: the same answer is available for free at /api/verify-ownership.
Baseapi.tokenizen.nlfrom $0.0011 endpoint - Aapi.timzinin.comCrypto & DeFi
Score ERC-20/BEP-20 token rug-pull risk from honeypot.is simulation + DexScreener liquidity/age. Detects honeypots, high taxes, thin liquidity, brand-new pairs. Heuristic signal, not financial advice. No wallet, no RPC key, no browser.
Baseapi.timzinin.comfrom $0.012 endpoints
SyraCrypto & DeFiLists conferences, launches, listings, and macro events affecting crypto. Use when an agent schedules research around catalysts or filters noise by ticker. Input: optional ticker. Returns event[] with titles, dates, and metadata.
SolanaBasePolygon+6api.syraa.funfrom $0.000161 endpoints- Aapi.syntalic.comOther services
Analyst/market-level query - $0.02 per request
BaseSolanaapi.syntalic.comfrom $0.0123 endpoints - Aapi.streamformation.comOther services
No description yet.
Baseapi.streamformation.comfrom $1.001 endpoint - Aapi.slamai.devCrypto & DeFi
Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of the increase in active wallets over the activity window determines the token's trending rank.
Baseapi.slamai.devfrom $0.0014 endpoints - Aapi.signalis.devAI & agents
Paid ($0.01 USDC via x402). Active AI-business narratives with lifecycle stage, driving sources, and momentum. Proxied from the Pulse service. Compute-first / settle-after — you are never charged when Pulse is unavailable or returns an error.
Baseapi.signalis.devfrom $0.012 endpoints - Aapi.shoal.xyzOther services
Top signal events ranked by score
Baseapi.shoal.xyzfrom $0.052 endpoints - IImportYeti ScraperSearch & web
Search public importer and supplier records on ImportYeti, built from shipment data, by company, supplier, product or address phrase: name, type, country, address, total shipments, most recent shipment, top suppliers and customers, trademarks and other names; filters for importers or suppliers, latest shipment within 6 or 12 months and minimum shipments; optional details add trade partners, HS cod
Baseapi.scrapeforagents.techfrom $0.031 endpoint - Aapi.salt19.comOther services
Query recent USGS earthquake events by lookback window and minimum magnitude and return compact live event state.
Baseapi.salt19.comfrom $0.011 endpoint - Aapi.rocads.com.mxOther services
Design or analyze ideal first-order RC low-pass/high-pass filters; calculate cutoff, attenuation, phase, settling and PWM fundamental attenuation
Baseapi.rocads.com.mxfrom $0.0024 endpoints - Aapi.redqueen-serving.cloudAI & agents
DeepSeek V4 Flash: fast general chat, tools, reasoning and JSON output.
Baseapi.redqueen-serving.cloudfrom $0.011 endpoint - RReceipts IndexAI & agents
One dated record row from the Receipts Index: what one AI engine answered for one check on one UTC date, as the businesses it named and the sources it showed. Returns the CSV header and one row; some fields are blank on some rows. Row ids are listed free at /v1/index and a free sample is at /v1/sample. A row id that does not exist returns 404 with no charge.
Baseapi.receiptsindex.comfrom $0.271 endpoint - Ppremiumrewards.vipCrypto & DeFi
One Sense. Definition from Wiktionary, CC BY-SA 4.0 and GFDL. https://creativecommons.org/licenses/by-sa/4.0/ https://www.gnu.org/licenses/fdl-1.3.html https://en.wiktionary.org/wiki/oracle The definition text (not this shop) may be reused under those licenses. Not endorsed by Wiktionary or the Wikimedia Foundation.
Baseapi.premiumrewards.vipfrom $0.0013 endpoints
api.predge.ioSocial & peoplePREMIUM smart-money consensus. "Smart money" is EDGE-based, not the opaque scorer: a wallet qualifies when its luck-damped realized edge over the last 30d is positive — edge_lower_bound = Wilson-95%-lower-bound(live win rate) − avg entry price > 0, from RESOLVED outcomes (same machinery as the wallets leaderboard), with skin-in-the-game floors (>= 10 trades, >= $1,000 volume). For every active Pol
BaseSolanaalgorand+2api.predge.iofrom $0.00521 endpoints- Aapi.polypulse-x402.workers.devCrypto & DeFi
Top Polymarket markets by 24h volume, with optional keyword filter. Snapshot of the most-traded open Polymarket markets in the last 24h (up to the top 300 scanned), optionally filtered by a case-insensitive keyword in the question/event title (e.g. 'bitcoin', 'election', 'fed') and by minimum liquidity. Returns odds, spread, volume, liquidity, price changes.
Baseapi.polypulse-x402.workers.devfrom $0.011 endpoint - PPermit ScouterSocial & people
Search new building permits in Tampa Bay, Southwest and Central Florida (GET /coverage lists the cities covered today) by area, trade (roofing, hvac, solar...), job value and date. Up to 25 results, refreshed daily.
Baseapi.permitscouter.comfrom $0.014 endpoints - Aapi.paysponge.comDeveloper tools
Service: AgentMail API (https://api.paysponge.com/v0/inboxes/henry@grailcart.com/messages)
SolanaBaseapi.paysponge.comfrom Free23 endpoints - Aapi.paygentic.marketCrypto & DeFi
Paygentic safe-handshake determination: is this counterparty wallet clean at deal time? Binary CLEAN or FLAGGED with the evidence and the exact checks that ran.
Baseapi.paygentic.marketfrom $0.021 endpoint - MMachine ShopCrypto & DeFi
Remove scripts, styles, templates and markup from static HTML; return visible text with line breaks. Limit: 50000 combined input string characters; batch maximum 100. JSON POST; invalid input returns 422, size limit 413. Unpaid production requests return x402 402 before input validation.
Baseapi.pay-forge.onlinefrom $0.00427 endpoints - PPaidPilot Invoice APIDeveloper tools
Generate an invoice PDF from JSON. $0.02 USDC on Base per call. Computes line items, tax, discount and totals server-side; 12 currencies; multi-page. Validate free first at POST /v1/invoice/validate. Don't use this for sending the invoice; it only returns the PDF.
Baseapi.paidpilot.iofrom $0.016 endpoints - Aapi.orth.shOther services
No description yet.
Baseapi.orth.shfrom $0.013 endpoints - Aapi.orcatrace.devOther services
No description yet.
Baseapi.orcatrace.devfrom $0.013 endpoints - Aapi.nightshiftbuilds.comOther services
One Australian company register lookup by ABN, ACN or name.
Baseapi.nightshiftbuilds.comfrom $0.011 endpoint
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.