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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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3,044 results- CCentCrypto & DeFi
Live Base snapshot for AI agents. Each GET returns the current Base block number, base fee, gas price, ETH-USD price, and a unique receipt. Price is exactly $0.01 USDC on Base via x402. No API key and no RPC method. GET /ping returns the same snapshot. Use it as a chain read or as the cheap call that proves an x402 client can pay.
Based1ithbpxjsnhrn.cloudfront.netfrom $0.012 endpoints - Ccve-intelCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basecve-intel.agentdiet.devfrom Free5 endpoints - Ccve-intelCrypto & DeFi
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.
Basecve-intel-72343955726.us-central1.run.appfrom Free5 endpoints - Ccurvecall.onrender.comMarkets & finance
Bonding-curve sell quote
Basecurvecall.onrender.comfrom $0.00110 endpoints - CCrypto PulseCrypto & DeFi
One call replaces four for AI agents: CoinGecko BTC/ETH/SOL/HYPE spots + 24h change, Fear & Greed, Hyperliquid funding/mark/OI, DefiLlama TVL/yields, plus a plain-English summary and signals. Keyless upstreams, 60s live cache, x402 USDC on Solana. Free sample GET /v1/sample; MCP POST /mcp.
Solanacryptopulseapi.comfrom $0.0052 endpoints - CCryptoPulse Data APICrypto & DeFi
Token security / rug-pull risk check for any ERC-20 (honeypot, mintable, owner privileges, tax, LP holders). Essential pre-trade safety check for trading agents.
Basecryptopulse.saascloud.aifrom $0.0027 endpoints - Oorbit Crypto NewsCrypto & DeFi
Crypto news feed, $0.0008 USDC per call: deduplicated headlines from 37 public sources (CoinDesk, Cointelegraph, The Block, Decrypt, DL News, Blockworks, Ethereum/Solana/Base blogs, Uniswap/Aave/Arbitrum/Optimism forums, GitHub releases of geth, reth, agave, Bitcoin Core). Each item: title, source url, source, published_at, topics, tickers, summary. Filters: topics, tickers, q, type. since cursor
BaseSolanacrypto-news.orbit-builder.workers.devfrom $0.00082 endpoints - Myworker Agent APICrypto & DeFi
Quote pertukaran sebenar dari Jupiter: outAmount, priceImpact, route. Input: "dari", "ke", "jumlah" (unit terkecil, cth lamports).
BaseSolanacrypto-micro-agent.mykira.workers.devfrom $0.00517 endpoints - DDevX Crypto Link CheckSocial & people
Phishing / impersonation check for crypto links before an agent or person connects a wallet or signs: brand lookalikes & typosquats of 60 wallets/exchanges/dapps, punycode, domain age (RDAP), DNS, redirects, and a page scan for seed-phrase prompts and approval-drainer code. 1-10 URLs per call.
Basecrypto-link-check.nextill-pos.workers.devfrom $0.0051 endpoint - Ccre-demo-x402-gateway-386444934355.europe-west2.run.appOther services
No description yet.
Basecre-demo-x402-gateway-386444934355.europe-west2.run.appfrom $0.011 endpoint - Ccracked.aiAI & agents
open-meteo/forecast via Cracked, the tool router for agents. One POST /v1/run executes any of 68,000+ tools: {"capability","input"} for a smart run or {"provider","endpoint","input"} for a direct run. Discover free at POST /v1/discover, read schemas at POST /v1/inspect. Quote = provider price + platform fee, never below $0.01; failed runs are never settled.
Basecracked.aifrom $0.011 endpoint - Ccouncilof.aiAI & agents
A signed card-v0 commission receipt for one named subject, plus every already-signed measurement card on file for it. Payment never mints a MEASURED cell.
Basecouncilof.aifrom Free7 endpoints - CContract Risk APICrypto & DeFi
On-chain contract risk score: detects upgradeable proxies and privileged functions from live bytecode. Use before trading/interacting with an unfamiliar contract.
Basecontract-risk-api-six.vercel.appfrom $0.012 endpoints - Ccontextaiagent.xyzOther services
Get top agents ranked by activity
Solanacontextaiagent.xyzfrom $0.0056 endpoints - Cconditioncheck-mainnet-production.up.railway.appOther services
Check a public webpage and determine whether a user-specified factual condition is currently true.
Baseconditioncheck-mainnet-production.up.railway.appfrom $0.011 endpoint
JWT DecoderCrypto & DeFiEVM address checksum and validation — check an Ethereum/Base address format before sending funds.
Baseconclavex402p04.pythonanywhere.comfrom $0.00521 endpoints
JWT DecoderCrypto & DeFiEVM address format, lowercase form and EIP-55 checksum in checksum mode — check an Ethereum/Base address before sending funds.
Baseconclavex402.pythonanywhere.comfrom $0.00521 endpoints- Ccompany-enrichSocial & people
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basecompany-enrich.agentdiet.devfrom Free5 endpoints - Ccompany-enrichSocial & people
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.
Basecompany-enrich-72343955726.us-central1.run.appfrom Free5 endpoints - Ccompanies.scrapemole.workers.devMarkets & finance
Use when you have a company name (or partial ticker) and need its exact ticker and SEC CIK before looking up financials or filings: matches against SEC's official ticker list (NYSE, Nasdaq, OTC, CBOE; about 10,000 SEC-registered companies), exact ticker first, then ticker prefix and name words. Up to 25 results.
Basecompanies.scrapemole.workers.devfrom $0.0014 endpoints - CCoinlightCrypto & DeFi
Count characters, words, lines, bytes and estimate LLM tokens for a text, so an agent can budget context before sending it.
Solanacoinlight-app.vercel.appfrom $0.00131 endpoints - Ccodenut.aiAI & agents
CodeNut Credit x402 Offer - $0.01 to get 100x worth of CodeNut credits!
Basecodenut.aifrom $0.012 endpoints - Ccode.mamenesia.comOther services
Make a $0.01 USDC tip through the x402 v2 flow. Returns a thank-you receipt. Lowest-friction first payment to verify x402 flow.
Basecode.mamenesia.comfrom $0.011 endpoint - Ccn-holiday-x402.linholiday.workers.devOther services
All statutory holiday periods and 调休 make-up workdays for a year in mainland China, with the official notice reference.
Basecn-holiday-x402.linholiday.workers.devfrom $0.014 endpoints - CCN DataCrypto & DeFi
Weibo real-time hot search list (Sina Weibo trending topics) in Chinese, with rank, topic title, heat score and tag. A second opinion next to /cn/trends, which uses Baidu. Optional ?limit=1-50. No API key and no signup: call the endpoint, it answers HTTP 402 with the payment terms, pay per request in USDC on Base with any x402-compatible client or wallet, then retry the same request to get the dat
Basecn-data-x402.cn-data-x402-worker.workers.devfrom $0.0135 endpoints - Ccloudworldmodel.aiAI & agents
Evaluate equivalent deployments across AWS, Azure, GCP, OCI, and DigitalOcean.
BaseSolanacloudworldmodel.aifrom $0.001311 endpoints - Ccloudmaxi0x.comData & research
Deterministic OHLCV for an exact half-open range, with a SHA-256 Merkle manifest. Only closed candles are returned - a forming candle would hand you lookahead. Exchange decimal strings are preserved byte for byte, so the same query always yields the same root. Gaps and exchange revisions are reported rather than silently applied.
Basecloudmaxi0x.comfrom $0.00114 endpoints - Ccloud.hyrule.hostOther services
No description yet.
Basecloud.hyrule.hostfrom $0.00115 endpoints - Cclear-to-send.audiemedhurstcre.workers.devMarkets & finance
Spot FX: one ECB reference conversion, plain text. Conversion is calculated from the ECB reference rate (amount × rate). Indicative only. Not a trade quote, not for settlement. Informational only / not for transaction use. Source: ECB statistics. These reference rates are free at https://www.ecb.europa.eu (and via Frankfurter). Not sold or endorsed by the ECB.
Baseclear-to-send.audiemedhurstcre.workers.devfrom $0.0011 endpoint - CClearOther services
Fetch a public URL as markdown from the public HTML (Readability)
Baseclear-agent-fetch.fly.devfrom $0.0051 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.