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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- FFilingsPulseMarkets & finance
Eight quarters of a US public company's reported fundamentals, straight from SEC XBRL. Answers "Apple revenue last 8 quarters", "is NVDA net income growing", "MSFT EPS trend". Revenue, net income, diluted EPS per quarter with computed YoY changes and the exact XBRL tag used — every number verbatim from data.sec.gov companyfacts, nothing modeled. Accepts ticker, company name, or CIK. No LLM, no key
BaseSolanaRobinhood Chain+9filingspulse.theaslangroupllc.comfrom $0.0214 endpoints - EESGPulseCrypto & DeFi
CSRD compliance roadmap for sustainability-reporting and compliance agents. Returns which ESRS standards apply, what must be disclosed, phase deadlines, and a double-materiality assessment guide.
BaseSolanaPolygon+8esgpulse.theaslangroupllc.comfrom $0.0517 endpoints - PProtocol Radar - Aaron ZhangCrypto & DeFi
Status of every Ethereum Improvement Proposal as JSON: number, title, status (living, final, last-call, review, draft, stagnant, withdrawn) and link, plus counts by status. Parsed live from eips.ethereum.org (EIPs are CC0).
BaseBase Sepoliaaaron-protocol-radar.vercel.appfrom $0.014 endpoints - PPreIPO Feed by Aaron ZhangCrypto & DeFi
Anthropic pre-IPO fundamentals as JSON: FY2025 revenue and May 2026 run-rate revenue, operating expenses, operating and net loss, compute and infrastructure spend, compute obligations, cash and short-term investments, top-customer revenue share, compute cost per revenue dollar. Each number has its own source URL, verification grade and value type (approx, lower bound, exact, derived).
BaseBase Sepoliapreipo-feed.vercel.appfrom $0.017 endpoints - CCourt Delta ProData & research
Look up a North Carolina (NC) court case or traffic citation and get its status, hearing dates, charges, party roster and counsel, dispositions, service of process, and bail / failure-to-appear signals. Supply ONE of caseNumber, citation, portalSessionRef or caseHash. Read-only. Informational, not legal advice.
Basemcp.courtdelta.comfrom $0.014 endpoints
KushBitx AgentProofCrypto & DeFiFast pre-payment sanity check for agents on Base: confirms the RPC reports Base mainnet (chain ID 8453) and that the official USDC contract has deployed code. No request body. Returns PASS or FAIL with both checks and a timestamp. It is not a token-risk report, transaction simulation or payment proof.
Basekushbitx.comfrom $0.0015 endpoints- GGridPulseAI & agents
Home battery storage ROI and payback calculator — Powerwall vs alternatives, backup-power value, with the IRA 30% tax credit and state incentives applied. For homeowner and solar agents.
BaseSolanaPolygon+8gridpulse.theaslangroupllc.comfrom $0.0110 endpoints - Eedge.goldsky.comDeveloper tools
Goldsky Edge RPC — prepaid balance, funds ~1000 requests at 5 atomic units each
BasePolygonArbitrum+10edge.goldsky.comfrom $0.00510 endpoints - TText Tools APIImages, audio & video
Wandelt CSV in JSON oder JSON in CSV um, ohne KI (Convert CSV to JSON or JSON to CSV, deterministic).
Base2-28-111-166.sslip.iofrom $0.0025 endpoints - Xx402 PulseCrypto & DeFi
Live BTC/ETH/SOL prices + the Crypto Fear & Greed Index in one call. Sourced from CoinGecko and alternative.me public data, combined for convenience.
Basex402-pulse-seller-production.up.railway.appfrom $0.0021 endpoint - Ttoken-riskCrypto & DeFi
Deterministic on-chain structural risk report for an ERC-20 token on Base. Keyless x402-native payment — no signup, no API key. Reports STRUCTURAL risk, not reputation: centralized-control powers (mint/pause/blacklist) are flagged regardless of issuer. Score 0-100, higher = structurally safer. See free real samples before paying: GET /samples/index.json
Basetoken-risk.comfrom $0.012 endpoints - SStableNinjaOther services
Fetch Google Play Store top grossing games.
Basestableninja.devfrom $0.014 endpoints - Kkarte.halowerk.comAI & agents
Returns an hourly CAMS forecast for UV Index under predicted clouds, clear-sky UV Index and surface solar irradiance. UV Index is derived from the CAMS biologically effective dose rate with the documented factor 40. Solar irradiance is de-accumulated from successive hourly surface-solar-energy fields. Values represent the nearest 0.4 degree model cell, not an on-site pyranometer.
Basekarte.halowerk.comfrom $0.0054 endpoints - SSpace Data APIImages, audio & video
Complete structured package for one illustrated classic of early science/engineering (1588-1748): verified public-domain scan, full metadata, curated description, full-text OCR link, IIIF manifest, and page-image URL template. Works: Ramelli machines 1588, Agricola De re metallica 1621, Hooke Micrographia 1665, Newton Principia 1687 & Opticks 1730, Euler Introductio 1748. Param: ?id=<work_id>
Baseagentdataapi.onrender.comfrom $0.014 endpoints - OOnRamperXCrypto & DeFi
OnRamperX is a non-custodial value router for agents and humans: fiat<->crypto and cross-chain via one quote interface (Coinbase Onramp v2, Relay, x402). This endpoint returns the router's live capabilities and rail status; use /api/x402/quote for a ranked route. Settlement centers on USDC on Base.
Baserouter.mudko.comfrom $0.0051 endpoint - GGarden CalculatorsOther services
Carbon-to-nitrogen ratio of a compost mix by the Cornell formula, or the greens-to-browns amounts that reach a target ratio.
BaseSolanaPolygon+1garden-calc.x402tookit.comfrom $0.027 endpoints - Aapi.exende.devAI & agents
Create a temporary public webhook endpoint for AI agents and automated workflows that need to receive asynchronous callbacks from external services. Returns a callback URL plus read and wait endpoints. No server deployment, signup, API key, or subscription required.
Baseapi.exende.devfrom $0.019 endpoints - CConvert Guru File Type DetectionImages, audio & video
Detects the likely real file format from filename, file creation time, file size, and the first 200 bytes of the file. Identifies common formats such as PDF, DOCX, XLSX, CSV, JPG/JPEG, PNG, WEBP, HEIC, TXT, HTML, MP3, WAV, MP4, AVI, MPEG, and WEBM, as well as about 15,000 other file types.
BasePolygonArbitrum+1convert.gurufrom $0.0022 endpoints - Xx402-research-iota.vercel.appCrypto & DeFi
Use before interacting with an unfamiliar Base (chain 8453) address: returns a public-data red-flag snapshot (contract vs EOA, EIP-7702 delegation, source verification, upgradeable proxy, age, activity, ETH/USDC balance, risk level). Pass ?address=0x... Errors: 400 invalid address. Informational only.
Basex402-research-iota.vercel.appfrom $0.0038 endpoints - MMioDio Meridian SDN ScreenCrypto & DeFi
MioDio Meridian OFAC SDN screen: exact match of one digital-currency address against public SDN Digital Currency Address entries (~$0.005 USDC Exact on Base). Informational only. Use before interacting with an address to check it against public OFAC SDN digital currency entries. Errors: 400 invalid_address or unsupported_chain, 402 payment required, unexpected 5xx is not charged. MioDio x402 DeFi.
Baseworkers.miodiollc.comfrom $0.0056 endpoints - PParallaxData & research
The funnel, honestly, for one seller over the indexed window: settled USDC and purchases, distinct buyers, organic share after self-test exclusion, recurring buyers, buyer half-life and the facilitator mix.
BaseSolanaparallax402.comfrom $0.014 endpoints - PPolyformData & research
Recent IPs caught probing Polyform's honeypot paths (credential/vuln scanners) — Polyform's own first-party telemetry, not a repackaged public list. Returns up to 500 most-recent scanner IPs with first-seen. For blocklists and threat research. JSON.
Baseapi.polyform.orgfrom $0.011 endpoint - Hhn.genexxis.comSocial & people
Hacker News user profile: karma, account creation date and age, about text (HTML stripped), number of submissions and the 10 most recent submission ids.
Basehn.genexxis.comfrom $0.0033 endpoints - HHijri Date ConverterDeveloper tools
Convert Gregorian dates to Hijri (Umm al-Qura calendar) and back. Returns day/month/year, Arabic and English month names, and a formatted Arabic date string. Essential for agents handling Islamic events, Ramadan, Hajj seasons, or Arabic documents.
Basebazaar-catalog.vercel.appfrom $0.012 endpoints
yields.genexxis.comData & researchGovernment yield at any tenor (e.g. 18M, 7Y, 12Y) for US, EA or MA, linearly interpolated between published points, with 1-month and 1-year-ago values.
Baseyields.genexxis.comfrom $0.0053 endpoints- Xx402 Market IntelligenceSearch & web
Competition check for an x402 idea: sellers, hosts, price range and how many have real buyers. Open space or crowded?
BaseSolanaPolygon+1x402-meta.x402tookit.comfrom $0.029 endpoints
cve.genexxis.comOther servicesScan up to 50 open-source packages (ecosystem, name, version) against OSV.dev: advisory ids, summary, severity, CVSS, fixed versions, CVE aliases with CISA KEV and EPSS joined, and a suggested minimum safe version.
Basecve.genexxis.comfrom $0.0053 endpoints- Ccarry.genexxis.comDeveloper tools
Convert an amount between ~50 currencies at the official reference rate (Bank Al-Maghrib for MAD pairs, ECB otherwise, cross via EUR), with rate, date and source.
Basecarry.genexxis.comfrom $0.0033 endpoints - Aairports.genexxis.comData & research
Decoded METAR and TAF (next 12 h) for up to 10 ICAO stations worldwide: wind, visibility, ceiling, flight category, temperature, weather, raw reports.
Baseairports.genexxis.comfrom $0.0033 endpoints - AARBITEROther services
ARBITER deterministic semantic control-flow and arbitration: measure and rank a fixed candidate field against current state, intent, or perspective.
Baseapi.grip.fyifrom $0.0012 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.