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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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224 results- TTech DetectSocial & people
One HTTP request per host, matched against an in-house signature set. Every hit carries a confidence value from 0 to 100 and the evidence it rests on: response header, asset path, cookie name, meta generator, DNS or ASN record. Results are cached for 24 hours per host, so a repeat lookup of the same domain answers from cache.
Basestack.netzhandwerker.defrom $0.0053 endpoints - Aapexrunner.aiAI & agents
APEX Runner: Market Tick Signal
Baseapexrunner.aifrom $0.00743 endpoints
base-gas-x402Crypto & DeFiCurrent gas price on Base and what a transaction costs in USD right now: base fee, priority tiers, ready-to-sign maxFeePerGas.
Basebase-gas-x402-production.up.railway.appfrom $0.0024 endpoints- Aapi.x402node.devCrypto & DeFi
China A-share major indices snapshot in one call: Shanghai Composite, Shenzhen Component, ChiNext, and CSI 300 — with price, change, percent change, day range and volume. The whole-market glance Chinese retail investors check every session. A股四大指数一览:上证指数、深证成指、创业板指、沪深300,含最新点位、涨跌、涨跌幅、振幅、成交量,一次调用看全大盘。A株主要指数スナップショット。Panorama de indices bursatiles de China A. Accepts payment on Base or Solana — either
SolanaBaseapi.x402node.devfrom $0.0022498 endpoints - CCheapTokens AI InferenceImages, audio & video
OpenAI-compatible LLM inference and chat completions via discounted Venice API credits. Pay USDC to receive a live Venice.ai API key for /api/v1 models, chat, images, audio, video, and embeddings. Same-Day credits are 30–90% below Venice direct and expire at 23:59 UTC; Prepaid API Keys support recurring agent jobs.
Basecheaptokens.aifrom $1.001 endpoint - GGlassnodeCrypto & DeFi
Market Value to Realized Value Ratio (MVRV) — Market Value to Realized Value (MVRV) is the ratio between market cap and realized cap. Data by Glassnode.
Basex402.glassnode.comfrom $0.0149 endpoints
Llama 3.1 8B chatAI & agentsChat completions via Telnyx Inference (meta-llama/Meta-Llama-3.1-8B-Instruct). OpenAI-compatible. $0.002237 USDC per call.
Basex402.telnyx.comfrom $0.00235 endpoints- Ttwin.unykorn.orgSocial & people
Gas price on Base and Ethereum in ONE call (legacy gas price + EIP-1559 priority fee, wei and gwei) — Genesis402 / UnyKorn Operator Network
BasePolygonSolana+1twin.unykorn.orgfrom $0.001276 endpoints
Agent Web-AccessImages, audio & videoWeb scraping API for AI agents: read any live web page as clean markdown, text or HTML. Renders JavaScript in our own headless browser, then strips navigation, ads and boilerplate. Use it when a plain HTTP GET returns empty or garbled HTML: single-page apps, dynamic feeds, or content that only appears after scripts run. Also returns the page's HTTP status. Page text is flagged untrusted so an agen
Baseweb.cyberwarex.comfrom $0.0016 endpoints- Ttick.hugen.tokyoCrypto & DeFi
Get real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. Includes quality metadata (fresh_sources, quality_state, spread_vs_single_source). Supports 29 FX pairs including EURUSD, USDJPY, GBPUSD, AUDUSD, AUDNZD, and XAUUSD. AI agent API for forex trading signals, portfolio valuation, price comparison, and arbitrage detection. Accepts USDC payments on B
BaseSolanatick.hugen.tokyofrom $0.0053 endpoints - Aapi.you.comSearch & web
You.com Search API: real-time web search returning ranked results grouped by section (results.web, results.news), each with url, title and description; web results also carry snippets. Use when an agent needs fresh, citable web data (news, markets, company facts) to ground a decision. Query params: query (required), count 1-100 (default 10), livecrawl (web|news|all; fetches live page contents, cha
BaseSolanaapi.you.comfrom $0.0052 endpoints - Xx402.forgemesh.ioOther services
A daily rotating spotlight on one paid x402 endpoint from the ForgeMesh fleet: what it does, what it costs, its input schema, a sample response, and the exact call to make. Deterministic by UTC date, so agents and humans checking on the same day see the same pick. Optional date parameter (YYYY-MM-DD) previews past or future days. One call, one new capability discovered.
Basex402.forgemesh.iofrom $0.00159 endpoints - My usage (wallet-keyed purchaseImages, audio & video
Your own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payment IS the identity, so nobody can read another wallet's profile.
SolanaSeiAvalanche+8agent402.toolsfrom $0.001669 endpoints
DeFi Safety OracleSocial & peopleFocused honeypot check: a live buy-then-sell simulation against real DEX liquidity (Aerodrome, Uniswap V2/V3/V4). Tells an agent whether the token can actually be SOLD, the round-trip loss percent, and whether GoPlus or honeypot.is flag it too. Catches sell-blocking scam tokens, extreme sell taxes and no-liquidity traps before a buy is placed.
Baseoracle.cyberwarex.comfrom $0.00121 endpoints
HivemindOSImages, audio & videoSearch the news: news articles for a search, each with its headline, address, outlet, a line of text and when it was published. Use when an agent needs the latest news articles on a topic, optionally only from the past day or week. $0.01 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.
Baseapi.hivemindos.appfrom $0.0135 endpoints- GgeoprimitivesData & research
Give it a latitude and longitude and it answers with what the nautical chart says about the water there: the depth range of the charted depth area containing the position, the nearest charted sounding and how far away it is, and the chart's own zone of confidence for that area. Parameters go in the query string: this is a GET, there is no body. NOT FOR NAVIGATION, stated first because it is a cond
Baseapi.geoprimitives.devfrom $0.0053 endpoints - TTech DetectDeveloper tools
One HTTP request per host, matched against an in-house signature set. Every hit carries a confidence value from 0 to 100 and the evidence it rests on: response header, asset path, cookie name, meta generator, DNS or ASN record. Results are cached for 24 hours per host, so a repeat lookup of the same domain answers from cache.
Basestack.halowerk.comfrom $0.005106 endpoints
WebberSites x402 Data APICrypto & DeFiANTHROPIC-COMPATIBLE /v1/messages — Claude Haiku 4.5 through the exact Anthropic API dialect: same request/response shape, no Anthropic account, the x402 payment IS the auth. Point an Anthropic SDK's base_url at https://api.webbersites.com and pay per call. Caps: 16,000 input chars, 1,024 output tokens (max_tokens clamped), text-only, no streaming.
Baseapi.webbersites.comfrom $0.00123 endpoints
NansenCrypto & DeFiGet Smart Money Holdings Data
SolanaBaseX Layer+2api.nansen.aifrom $0.0160 endpoints- 33RouteCrypto & DeFi
Price a swap without building a transaction. Returns expected input, output, and gas without constructing an executable transaction. Quotes are informational and can change with liquidity and chain state.
BaseEVM chain 42793Solanaapi.3route.iofrom $0.0011 endpoint
ManyLives AIImages, audio & videoRead back values the paying wallet saved with /paid/memory/set: one key, or list your keys by prefix (keys, sizes and expiry, newest first). Another wallet can never see them. No free trial.
BaseSolanaapi.manylives.mefrom $0.00286 endpoints
Maha Context CompilerCrypto & DeFiCompress long documents and RAG inputs into token-budgeted, deduplicated context packs with source-linked provenance. Returns original and compiled token counts, so the saving is verifiable. Net-positive above N = fee / (r x p) tokens: r your reduction, p your input price. Extractive and budget-bound, so check includedPassages before relying on it. Ranks Latin, Cyrillic, Greek, Arabic and CJK; CJK
BaseArbitrumPolygonmahastrategies.comfrom $0.002215 endpoints- Aagentbit.appSearch & web
Web search API for AI agents — find current information, news, documentation, competitors, prices or any fact that needs a fresh, citable source. Pay-per-call, no API key. Returns ranked results with title, URL, snippet, publish date and source from neural + keyword search over the live web, with automatic provider failover. Use when an agent asks: search the web, look up the latest on a topic, fi
BasePolygonArbitrum+2agentbit.appfrom $0.00197 endpoints
x402 Web SearchImages, audio & videoWeb search that returns structured SERP results as JSON. Runs on a dedicated SearXNG instance aggregating multiple engines, so there is no per-engine API key, quota or HTML scraping to manage. Each result carries title, URL, snippet, the source engine and a published date where available. Choose general web, news, or image results, up to 10 per call. Use it to ground an answer in current web sourc
Basesearch.cyberwarex.comfrom $0.00111 endpoints- KKronos Crypto Data & ForecastsCrypto & DeFi
Real-time and ML-forecasted Bitcoin (BTC) price. Kronos deep-learning model: up-probability, expected close, price range, p10-p90 quantiles, forward volatility across 1h/4h/24h horizons. Crypto price prediction / price forecast API for AI agents and trading bots. Pay-per-call via x402 on Base USDC. Live scored track record at /api/stats — measured on served predictions, not a backtest.
Basekronossignals.comfrom $0.0242 endpoints - HHALOWERK formwerkOther services
Prüft am Objekt seite den Befund Übermittlung vor Einwilligung.
Baseformwerk.halowerk.comfrom $0.001100 endpoints - AagdataImages, audio & video
Unblocker for AI agents: send {url} and get the page back as clean Markdown, with title, description, language, final URL and HTTP status. Gets through Cloudflare and other common bot protection and can render JavaScript-heavy pages. Set format to html or text for those instead. A page that can't be fetched (blocked, error status or empty) is not charged. No API key, proxy or account: pay per call
BaseSolanaPolygonagdata.shveik.devfrom $0.0231 endpoints
x402stockCrypto & DeFiThe total US public debt outstanding to the penny — the headline national-debt figure — split into debt held by the public and intragovernmental holdings, with the latest value, prior business day, day-over-day change, and recent history. No ticker needed. Updates each business day. Sourced from the US Treasury (FiscalData). Pass `?limit=` for more history (default 30, max 250). From x402stock
Basezeroclickagents.x402stock.xyzfrom $0.0197 endpoints
Blackwood State News HeadlinesImages, audio & videoUse when you need historical exchange rates, a historical FX rate series, forex history or a currency trend. Do not use for rates older than 90 days, live quotes or crypto (one ECB rate per business day). Returns JSON with historical exchange rates: 90 days of daily ECB euro reference rates (free at ecb.europa.eu) for up to 10 currencies, rebased to any base as cross rates, with min, max and perce
Basex402-gateway.blackwoodstate8.workers.devfrom $0.00232 endpoints- Sskim402.comAI & agents
Skim: clean reader — URL to agent-ready markdown + metadata, ~4x smaller than raw HTML
Baseskim402.comfrom $0.00210 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.