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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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- Paid calls · 30 days
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Crypto & DeFi
1,108 results- DDevrynoCrypto & DeFi
Cheap x402 ping. Returns server time and receive wallet. $0.001 USDC on Base.
Basedevryno.comfrom $0.0011 endpoint - Rrfc-791Crypto & DeFi
Go module github.com/gin-gonic/gin: latest version, description, license, repository and download/publish data from the go registry API. Pin, audit or compare github.com/gin-gonic/gin in one call, no token. $0.01 per call.
Basedev.intel.rallylive.cafrom $0.0119 endpoints - IV Surface DeskCrypto & DeFi
When to use: book of market premiums → need IV grid + per-quote Greeks (not a single contract). Shared rate/yield; each row has its own underlying (power/commodity forwards by maturity). Returns strike×maturity IV surface, fit quality, solve stats. USDC exact on Solana/Base. Prefer single IV endpoint for one premium.
Solanaderivatives-pricer-production.up.railway.appfrom $0.017 endpoints
Degenscan IntelCrypto & DeFiMCP server (streamable HTTP). Tools: events_since, impact_for, exposure_graph, regime_snapshot, explain, universe, sources_status.
Basedegenscan-intel.onrender.comfrom $0.012 endpoints- Ddefi-yieldCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basedefi-yield.agentdiet.devfrom Free5 endpoints - Ddefi-yieldCrypto & 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.
Basedefi-yield-72343955726.us-central1.run.appfrom Free5 endpoints - Ddefi-position-health-mcp.mtree.workers.devCrypto & DeFi
No description yet.
Basedefi-position-health-mcp.mtree.workers.devfrom $0.101 endpoint - SScavenger Security LabsCrypto & DeFi
Performs live on-chain EVM bytecode disassembly and selector inspection across Base (8453), BSC (56), Ethereum (1), and Arbitrum (42161) to detect EIP-1967/1167 proxies, EIP-3009 transferWithAuthorization support, blacklist/pause modifiers, and fee-on-transfer settlement traps.
Baseda4f23c178f0744b-113-150-232-125.serveousercontent.comfrom $0.027 endpoints - 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 - 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 $0.0217 endpoints - CottonmouthAICrypto & DeFi
Autonomous Rust smart contract security auditor — CosmWasm, Anchor, Stellar, NEAR
Basecottonmouth.lonestaroracle.xyzfrom $2.001 endpoint - Ccoppice-ai.comCrypto & DeFi
Live conformance check of an x402 endpoint (Solana or Base) before you pay it
Solanacoppice-ai.comfrom $0.051 endpoint - LoneStarOracle ContractCheckCrypto & DeFi
Smart contract verification and security analysis on Ethereum Base BSC Arbitrum Polygon
Basecontract.lonestaroracle.xyzfrom $0.051 endpoint - 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
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- 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 - CCN DataCrypto & DeFi
Baidu real-time hot search top list. Chinese-language trending topics with rank, title and heat score. Useful for content planning, market sentiment and picking what to write about next. 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
Basecn-data-x402.cn-data-x402-worker.workers.devfrom $0.012 endpoints - CClaw HunterCrypto & DeFi
Write an X thread from a brief — hook, one idea per post, closing payoff. Optionally grounded in a crypto bounty's criteria and project research via bountyId (Pump Fun GO and other venues).
BaseSolanaclawhunter.funfrom $0.00112 endpoints - CClaude Solana MicrocallsCrypto & DeFi
Solana USDC x402 exact settlement smoke test; costs 0.01 USDC, does not use Lumia.
Solanaclaude-agentcash-solana-v2.contact-globalsell.workers.devfrom $0.011 endpoint - CClaude Solana MicrocallsCrypto & DeFi
Short-text nonstreaming Claude inference. Solana USDC x402 exact quote calculated before inference (not actual-use settlement).
Solanaclaude-agentcash-solana-pilot.contact-globalsell.workers.devfrom $0.031 endpoint - CCian Endpoint AuditCrypto & DeFi
HTTP endpoint health audit for one URL: status and redirect chain, latency p50/p95 over repeated samples, TLS certificate expiry and issuer, the response headers that matter, and a list of detected anomalies (missing HSTS/CSP/X-Content-Type-Options, expiring cert, weak TLS, CORS wildcard, insecure cookies, version disclosure, slow p95, redirect loops). Private, loopback and link-local targets are
Basecian-x402.netlify.appfrom $0.012 endpoints - Cchiefofstaff token safetyCrypto & DeFi
Solana token safety / rug-pull check for SPL tokens (pump.fun, Raydium, Meteora, Jupiter): one-sentence verdict, blocking/warnings/unknowns, mint & freeze authority, RugCheck score & risks, LP locked %, holder count & top-10 concentration, liquidity & price, 1h volume & buy/sell flow, age -> casino|speculative|legit.
Basechiefofstaff-solana.iodized-lemon.workers.devfrom $0.0025 endpoints - ChainReadCrypto & DeFi
Current gas price and fee suggestion on Base or Ethereum: base fee, priority fee (low/standard/fast), max fee to set, and what an ETH transfer, ERC-20 transfer and DEX swap cost right now in gwei, ETH and USD (Chainlink ETH/USD). Know what a transaction costs before you send it.
Basechainread.imac2014ville.workers.devfrom $0.0011 endpoint - Cchainray.onlineCrypto & DeFi
ChainRay /token-risk
Basechainray.onlinefrom $0.00180 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.