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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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Crypto & DeFi
844 results- Sshopify-spyCrypto & 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.
Baseshopify-spy-72343955726.us-central1.run.appfrom Free5 endpoints - Sshopify-intelCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Baseshopify-intel.agentdiet.devfrom Free5 endpoints - Sshopify-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.
Baseshopify-intel-72343955726.us-central1.run.appfrom Free5 endpoints - Sshop.northheart.appCrypto & DeFi
Busiest x402 services in our directory sample, of one kind (our own keyword grouping) under your price limit, with at least 2 calls per buyer: ?kind=&max_price_usd=&min_payers= (kinds: AI answers and writing, Blockchain data lookups, Web search and page reading, Prices and market data, Other)
Baseshop.northheart.appfrom $0.00514 endpoints
shop.blocklabs.nlCrypto & DeFiPlace a dropshipping order (price quoted per order). Ships to EU member states only. Payer wallet must be deployed (counterfactual smart accounts are not supported).
Baseshop.blocklabs.nlfrom $0.0015 endpoints- Sserp-extractCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Baseserp-extract.agentdiet.devfrom Free5 endpoints - Sserp-extractCrypto & 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.
Baseserp-extract-72343955726.us-central1.run.appfrom Free5 endpoints - Ssec-intelCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basesec-intel.agentdiet.devfrom Free5 endpoints - Ssec-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.
Basesec-intel-72343955726.us-central1.run.appfrom Free5 endpoints - SScorpTech ReconCrypto & DeFi
Live gas tracker across Ethereum, Base, Arbitrum, OP Mainnet, Polygon and BNB Chain: head block age, base fee, 10th/50th/90th percentile priority fees from eth_feeHistory, suggested maxFeePerGas tiers, and estimated cost of a native transfer and an ERC-20 transfer. Read-only.
Solanascorptech.it.comfrom $0.0051 endpoint - SScanPayCrypto & DeFi
Code scan / security scan — inspect AI-generated Python/JS/TS source code BEFORE it runs. 45 deterministic AST rules return structured findings (rule_id, severity, line ranges, remediation) in ~100 ms with no code execution, no LLM and no data retention. Use it in agent loops that generate and execute code.
BaseSolanascanpay-edge.alextaghiashvili.workers.devfrom $0.000155 endpoints - Ssantyvv-dataCrypto & DeFi
Consensus spot price across three exchanges
Basesantyvv-x402.santyvv1993.workers.devfrom $0.0140 endpoints - Rrugshield-402.onrender.comCrypto & DeFi
Tracks institutional and high-win-rate whale wallet net inflows and outflows across Solana SPL and Base ERC-20 tokens.
BaseSolanarugshield-402.onrender.comfrom $0.0112 endpoints - Xx402 Web ProbeCrypto & DeFi
Website uptime/latency/TLS check of a public URL, measured from a server in US Central (St. Louis). Returns status, DNS/TTFB/total ms, redirect chain, cert expiry.
Baserockndefi.xyzfrom $0.0014 endpoints - Rrobinhoodradar.comCrypto & DeFi
Robinhood Radar live reranked board: creator ratings and token ATH/price table.
Baserobinhoodradar.comfrom $0.018 endpoints - Rrobinhood-radar-nu4yz7wqv-lightfarm.vercel.appCrypto & DeFi
Robinhood Radar on-chain new-pool feed (every new Robinhood-chain launch).
Baserobinhood-radar-nu4yz7wqv-lightfarm.vercel.appfrom $0.0051 endpoint - Rrobinhood-radar-dsk86hfkw-lightfarm.vercel.appCrypto & DeFi
Robinhood Radar live reranked board: creator ratings and token ATH/price table.
Baserobinhood-radar-dsk86hfkw-lightfarm.vercel.appfrom $0.011 endpoint - DDevX Repo Run CheckCrypto & DeFi
Before an AI coding agent (or you) runs a GitHub repo's install steps: scans README, package.json install scripts, install.sh/setup.py, .vscode/tasks.json and Makefile for download-and-execute one-liners (iwr|iex, curl|sh), obfuscated or base64 payloads, known malware domains, typosquatted crypto dependencies, agent-targeted prompt injection and password-protected archives, plus GitHub signals of
Baserepo-run-check.nextill-pos.workers.devfrom $0.0051 endpoint - DDNS lookupCrypto & DeFi
prompt-injection risk scan: detects instruction override, tool abuse and secret exfiltration phrases before an agent consumes untrusted text.
Baserelay402.georgespring.workers.devfrom $0.00130 endpoints - Rregistry.frames.agCrypto & DeFi
Get token prices in any fiat/crypto currency
Baseregistry.frames.agfrom $0.0021 endpoint - Rrag-dietCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat (https://rag-diet.agentdiet.dev/v1/distill)
Baserag-diet.agentdiet.devfrom Free1 endpoint - QtyCrypto & DeFi
Canonical audit JSON plus sha256 of a previous Qty result. Includes input, definition ids, formulas, and a timestamp. The hash ignores the timestamp so the same payload always hashes the same. No chain write. Exact USDC $0.001 on eip155:8453 and solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp.
BaseSolanaqty.vercel.appfrom $0.0011 endpoint - Ppulse402-oracle.ak10082247.workers.devCrypto & DeFi
High-frequency Base DEX oracle delivering real-time pool reserve deltas, 60-second netflow velocity, buy/sell tax status, and exact slippage quotes for $100, $1,000, and $10,000 trade sizes across Aerodrome and Uniswap v3.
Solanapulse402-oracle.ak10082247.workers.devfrom $0.0014 endpoints - Pprompt-guardCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Baseprompt-guard.agentdiet.devfrom Free5 endpoints - Pprompt-guardCrypto & 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.
Baseprompt-guard-72343955726.us-central1.run.appfrom Free5 endpoints - Ppricing-state-api.replit.appCrypto & DeFi
$0.01 USDC required (x402 / Base) Returns the history of detected pricing changes: what changed, plan-level detail, and when each change was detected. No API key needed. Pay with any x402-compatible wallet that holds USDC on Base. If your agent does not yet have a funded wallet, set one up via Coinbase Agentic Wallet or Base MCP — then standard x402 clients will pay and retry automatically.
BaseSolanapricing-state-api.replit.appfrom $0.0172 endpoints - Ppresign-guardCrypto & DeFi
Token verdict (green/orange/red, grade SAFE/CAUTION/RISKY/AVOID, reason codes, one-line summary, market data) for a Solana or EVM token: mint/freeze authority, honeypot, tax, LP lock, liquidity, age, holder concentration
Solanapresign-guard.onrender.comfrom $0.011 endpoint
Linkrra Inference CreditsCrypto & DeFiLinkrra inference credits — pay-as-you-go top-up ($1-$1000) at $0.2273/M tokens
Basepool.linkrra.comfrom $0.0018 endpoints- Ppolymarket-oddsCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basepolymarket-odds.agentdiet.devfrom Free5 endpoints - Ppolymarket-oddsCrypto & 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.
Basepolymarket-odds-72343955726.us-central1.run.appfrom Free5 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.