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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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4,150 results- Ssheets-api-production-636c.up.railway.appOther services
Create styled XLSX workbooks with typed cells, multiple worksheets, filters, frozen headers, numeric formats and cached formula totals. Input strings remain text, including strings beginning with =.
Basesheets-api-production-636c.up.railway.appfrom $0.051 endpoint - SSato HubCrypto & DeFi
Daily Sato Score history for one Sato Hub listing: score, tier components, GitHub stars, status and verification state per day, with the dates the score moved (genuine changes vs our own method revisions marked). Captured daily since 2026-06-12; not reconstructable. The current catalog and the daily score line stay free. Priced per daily point returned: $0.005 for up to 90 days, +$0.001 per day be
BaseSolanasatohub.aifrom $0.0052 endpoints - RRugSenseCrypto & DeFi
Scored intelligence on freshly-launched Base tokens: safety + momentum → composite score and an AVOID/WATCH/HOT decision per launch. One call returns a ranked list.
Baserugsense.xyzfrom $0.031 endpoint - RRandom ChoiceCrypto & DeFi
Cryptographically secure random picker for 2-100 JSON choices. Use for low-stakes one-off random or weighted selection, unbiased tie-breaking, and sampling. Returns the selected value and index, request ID, and weight totals for audit logs. $0.001 USDC per paid request. Not for stable assignments, gambling, security tokens, or consequential decisions; outcomes are not provably fair.
Baserandom.preflightstack.comfrom $0.0011 endpoint - Qqr-api-production-7adc.up.railway.appOther services
Generate SVG or PNG QR codes for links, text and standard payloads. Includes a four-module quiet zone, selectable error correction and validated foreground/background contrast.
Baseqr-api-production-7adc.up.railway.appfrom $0.021 endpoint - PPuzzle SolversOther services
Optimal Tower of Hanoi move list for up to 10 disks between pegs A, B and C, and the minimum move count 2^n - 1.
BaseSolanaPolygon+1puzzle-solvers.x402tookit.comfrom $0.023 endpoints - Ppagecheck-api-production.up.railway.appImages, audio & video
Audit supplied HTML for metadata, canonical URLs, indexability directives, headings, image alternatives, form labels, link names, social metadata and JSON-LD validity. Returns evidence and practical fixes. Static checks are not a full WCAG certification or ranking guarantee.
Basepagecheck-api-production.up.railway.appfrom $0.051 endpoint - Oodood.comAI & agents
POST a URL; get clean, LLM-ready content (Markdown/text/JSON) plus a prompt-injection risk verdict (clean | suspicious | flagged). A defense layer for agents and RAG pipelines, not a guarantee.
Baseodood.comfrom $0.0041 endpoint - Nnrc-event-screen.iykykblog.workers.devData & research
Screen a facility or licensee against U.S. Nuclear Regulatory Commission (NRC) Event Notification reports: matching event notifications with event number, date, facility, state, the NRC's facility category, 10 CFR basis, and the published headline and event text, plus counts by category. Federal public data (nrc.gov).
Basenrc-event-screen.iykykblog.workers.devfrom $0.051 endpoint - AAgent News HubSearch & web
Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window and result limit using the published schema. Returns headlines, a short abstract, first-report time, reporting-source counts and citations. Coverage is limited to the managed feed set; source count is not independent confirmation. Third-party article bodies are never returned.
Basenews.halowerk.comfrom $0.0021 endpoint - Mmine-safety-screen.iykykblog.workers.devDeveloper tools
MSHA mine safety verdict by Mine ID, mine name, or operator name: inspections, violation counts (incl. significant & substantial), assessed penalties, accidents/injuries/fatalities, and current mine status. Aggregated from MSHA Open Government Data (US federal public domain).
Basemine-safety-screen.iykykblog.workers.devfrom $0.051 endpoint - MMachine Market SocialSocial & people
Fetch a current public creator profile.
Basemachine-market-social-mainnet.machine-market.workers.devfrom $0.0081 endpoint - LLatAm Official FXMarkets & finance
Official central-bank exchange rate for one Latin American currency against USD (BRL PTAX, ARS BCRA, COP TRM, PEN BCRP, MXN FIX), with source, date and staleness flag.
Baselatam-fx.latamfx.workers.devfrom $0.0021 endpoint - Hhome-health-screen.iykykblog.workers.devData & research
Home-health agency quality verdict by agency name, CMS Certification Number (CCN), or ZIP code. Returns the CMS Quality of Patient Care star rating, the HHCAHPS patient-survey star summary, and key outcome measures (functional improvement, discharge to community, potentially preventable readmissions and hospitalizations) with national averages for comparison. Source: CMS Provider Data Catalog (US
Basehome-health-screen.iykykblog.workers.devfrom $0.051 endpoint - Xx402 HailData & research
Hail at a US address or lat/lon on one date: the largest NOAA radar estimate of hail size (MRMS MESH) at the place and within 1, 3, 5 and 10 miles, NEXRAD hail signatures, nearby spotter reports, and a verdict (hail_likely, hail_possible, no_hail_detected). Dates from 2020-10-14. For roofing, insurance claims and property checks. Not found addresses and dates without data are not charged.
Basehail.kagurazaka.devfrom $0.103 endpoints - FFutures Expiry APICrypto & DeFi
Returns all four quarterly expirations and roll dates of a CME or Eurex index future for one calendar year, with holiday adjustments.
Basefutures-expiry-api.onrender.comfrom $0.032 endpoints - Ccalendar-api-production-33a1.up.railway.appOther services
Create RFC 5545 ICS calendars for appointments and itineraries, with all-day events, locations, descriptions and bounded recurrence. Timed events and recurrences are emitted in UTC; all-day end dates are exclusive.
Basecalendar-api-production-33a1.up.railway.appfrom $0.021 endpoint - VVerify tx receipt for payoutOther services
Verify a Base/BSC transaction receipt for a payout or claim: status, block, sender, gas, decoded ERC-20 Transfer logs and a sha256 evidence digest. 0.01 USDC via x402 on Base. POST only. Free sample: /samples
BaseBase Sepoliacairnworks-verify.run402.comfrom $0.011 endpoint - Aavt-x402.ttsempelis.workers.devImages, audio & video
International phone number validation and normalization (libphonenumber): validity, country, E.164, national/international formats and line type.
Baseavt-x402.ttsempelis.workers.devfrom $0.011 endpoint - IInstant Microcopy AuditData & research
Analyze French or English marketing and interface copy. Returns a clarity score, repetition data, sentence metrics, CTA detection and concrete fixes.
Baseautomaton-microcopy-audit.assistance-telegram-relay.workers.devfrom $0.021 endpoint - IInfoharmoni Radar whoCrypto & DeFi
Is this x402 seller real? One seller's report card before you pay them: what they sell, price, rank of all sellers, rivals, and from the chain who actually pays it on Base: payer wallets, how concentrated they are, how many came back on 2 or more days, and how many of its payers are wide samplers that paid 30+ sellers (not shoppers). Dated, with the evidence behind each fact. $0.001 a call. Refusa
BaseSolanaausrine-who.onrender.comfrom $0.0011 endpoint - AApify Actor PreflightSocial & people
Vet an Apify actor before you spend on it. Send one actor ID (e.g. apify/instagram-scraper) and get scored JSON in seconds, with evidence and a verdict, from public metadata: pricing, output schema, maintenance, reliability, docs. Unlimited criteria: our pre-built set or your own rubric in plain English. Metadata grades what a vendor claims. The $1 full audit runs the actor and measures what it de
Baseaudit-tools.aifrom $0.021 endpoint - Aatk-bazaar-linec-production.up.railway.appData & research
[$0.20 per article (Base Sepolia testnet USDC; example content, not published)] ATK Magazine EXAMPLE (draft, not published): [EXAMPLE] ATK VERIFY: three numbers on the ResearchAgent project map, checked against its source. Returns a JSON excerpt/placeholder of one example article.
BaseBase Sepoliaatk-bazaar-linec-production.up.railway.appfrom $0.202 endpoints - Aassay.cascadiantech.comCrypto & DeFi
Liquidity pools created on Base mainnet in the last 24 hours, newest first, one page per call, filterable by exchange and flag. Each pool carries measured facts, each with the block it was read at, and true/false/unknown flags, with evidence for every true or unknown one; anything missing is stated in words. No score. Payment on Base mainnet.
Baseassay.cascadiantech.comfrom $0.021 endpoint
apiaudit.madebydevx.comData & researchQuick API health check for agents: send one public API endpoint URL and get a 3-sample spot check for $0.09 USDC on Base: grade A-F, score, production-ready yes/no, median/p95 latency, success rate and the top 3 issues with concrete fixes (security headers, CORS, HTTPS redirect, JSON consistency). Unreachable targets not charged. Full 10-sample audit with every finding and cert expiry: POST /v1/au
Baseapiaudit.madebydevx.comfrom $0.091 endpoint- Aapi.sys84.orgCrypto & DeFi
Discover active Base tokens ranked by momentum, liquidity, and volume. Returns machine-readable market metrics plus report freshness and follow-up risk-check links.
BaseRobinhood Chainapi.sys84.orgfrom $0.021 endpoint - PPython Code ValidatorOther services
Check Python for syntax errors, lint and type mistakes, unsafe constructs and hardcoded credentials, and against the examples the caller supplies, without running it.
Baseapi.statemind.aifrom $0.011 endpoint - Aapi.stackgoai.comSocial & people
Extract structured public business contact information from any public business website. Returns company name, emails, phone numbers, social profiles, postal addresses, and contact pages as structured JSON. $0.01 per request via x402 on Base.
Baseapi.stackgoai.comfrom $0.011 endpoint
OpenCheapAI & agentsOpenAI-compatible chat completions for hundreds of open and closed models (DeepSeek, Kimi, GLM, Qwen, Llama, Claude, GPT, Gemini) through one endpoint, each call routed to the cheapest healthy provider for that model. Pay per call in USDC on Base with no API key or account: the 402 quotes this prompt plus max_tokens (up to 4,096). Streaming and tool calls supported. Model ids and prices: https://a
Baseapi.opencheap.sifrom $0.0011 endpoint- EEmbossDeveloper tools
Fill a PDF form from structured data such as JSON or key-value answers. Also: fill a PDF form from JSON; populate form fields from data; complete a PDF application from known values; write answers into a form. Price scales with page count; this 402 carries the exact amount for the PDF sent.
Baseapi.getemboss.aifrom $0.053 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.