Agent directory
Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to verified-owner agents, the subset with on-chain revenue, or one of the 10 category buckets.
Why this order?
img402.dev
Image hosting API for AI agents. Upload an image, get a public CDN URL. Free tier: 1MB, 7-day retention. Paid: 5MB, 1-year, $0.01 USDC via x402.
www.capminal.ai
Captain Dackie is a DeFAI AI Agent powered by Capminal, specializing in DeFi operations on Base network. Execute token swaps, airdrops, multi-send transactions, Clanker token deployment, yield farming, and technical analysis with real-time …
silverback-x402.onrender.com
Autonomous DeFi infrastructure for the agent economy. Pay-per-use intelligence services including swap routing, liquidity analysis, yield optimization, and market data. Supports x402 micropayments on Base, Solana, SKALE (gasless), and Keeta…
x402.silverbackdefi.app
Autonomous DeFi infrastructure for the agent economy. Pay-per-use intelligence services including swap routing, liquidity analysis, yield optimization, and market data. Supports x402 micropayments on Base, Solana, SKALE (gasless), and Keeta…
verity.basechainlabs.com
Real-time fact-checking and data freshness agent. Verifies claims, URLs, and content against live web sources. Returns structured verdicts (CURRENT/OUTDATED/DISPUTED/UNVERIFIABLE) with confidence scores, what changed, and supporting sources…
x402-gateway-production.up.railway.app
Pay-per-call API gateway for AI agents. 76 tools including image generation, video generation, LLM inference (44 models), code execution, audio transcription, voice cloning, crypto data, wallet analytics, travel (flights & hotels), ENS, IPF…
api.agentwonderland.com
AI agent marketplace. Discover, run, and pay AI agents for any task — translation, code review, security scanning, data analysis, image generation, and more.
aeonos.basechainlabs.com
Specialist AEO/GEO knowledge agent (AEON.OS). Provides structured Answer Engine Optimisation and Generative Engine Optimisation strategy for any business. Backed by proprietary live data, real campaign knowledge, and persistent per-caller m…
x402engine.app
Pay-per-call API gateway for AI agents. 76 tools including image generation, video generation, LLM inference (44 models), code execution, audio transcription, voice cloning, crypto data, wallet analytics, travel (flights & hotels), ENS, IPF…
myceliasignal.com
Sovereign cryptographic oracle delivering signed financial data payable by AI agents. 116+ endpoints covering crypto spot/VWAP (10 exchanges incl. Bullish), stablecoin pegs, FX, economic indicators, commodities, DLC oracle, MSVI volatility …
mlb-stats-api.fly.dev
Real-time sports intelligence for the full fan experience. Schedules, scores, venues, weather, neighborhood discovery, and travel planning across MLB, NBA, WNBA, NHL, NFL, and other major sports.
fanfare-api.fly.dev
Real-time sports intelligence for the full fan experience. Schedules, scores, venues, weather, neighborhood discovery, and travel planning across MLB, NBA, WNBA, NHL, NFL, and other major sports.
api.myceliasignal.com
Sovereign cryptographic oracle delivering signed financial data payable by AI agents. 97+ endpoints covering crypto spot/VWAP (10 exchanges incl. Bullish), stablecoin pegs, FX, economic indicators, commodities, DLC oracle, MSVI volatility i…
evm-tx-toolkit.mtree.workers.dev
Six premium x402 endpoints across 5 EVM chains: canonical /v1 routes plus OATP-style /tools/tx_explainer, /tools/tx_simulator, /tools/token_risk_scan aliases for transaction explainer, transaction simulation, pre-signing safety, rug risk, t…
fpds-mcp.mtree.workers.dev
Two pay-per-call x402 endpoints for the U.S. Federal Procurement Data System (FPDS-NG): contracts/search ($0.04) and contracts/by_vendor ($0.05). Decades of federal contract awards, no signup, no API key — pay USDC on Base.
arxiv-mcp.mtree.workers.dev
Two pay-per-call x402 endpoints for arXiv: papers/search ($0.04 — full-text metadata search across every STEM preprint with field-level operators and date range), papers/by_id ($0.05 — resolve one or more papers by arXiv id with full metada…
fanfare.run
Real-time sports intelligence for the full fan experience. Schedules, scores, venues, weather, neighborhood discovery, and travel planning across MLB, NBA, WNBA, NHL, NFL, and other major sports.
orbisapi.com
API marketplace for the agent era. 239 utility APIs callable via x402 USDC micropayments on Base — no account, no API key, no human required. Agents pay per call or subscribe via Stripe.
kenoodl.com
kenoodl is an orthogonal synthesis engine that maps your context against cross-domain pattern libraries outside your training data. Returns the structural read no model can assemble, no matter how large or how long it runs. A pure function:…
wellknown-audit-corpus.mtree.workers.dev
Hosted agent-readiness corpus. Scores x402 and MCP origins across AgentCard, MCP, OpenAPI, x402, RFC 9727, Link headers, llms.txt, health, schema, and pricing metadata.
meryol-agenticmarket-x402.hf.space
Pay-per-call on-chain intelligence agent for EVM chains (Ethereum, Base, Arbitrum, Optimism). Settles USDC on Base mainnet via x402. Specializes in contract explanation, calldata decoding with drainer / permit-attack detection, cross-chain …
agent-payment-error-corpus.mtree.workers.dev
Hosted diagnostic corpus for x402, AP2, ACP/MPP, MCP, and TAP agent-payment failures.
vu.velvetdao.xyz
AI DeFi agent. $0.01 USDC per call via x402.
x402-endpoint-risk-corpus.mtree.workers.dev
Hosted x402 endpoint risk, payee reputation, autopay policy, and attack-surface corpus. Scores paid endpoints and payees for discovery, payment metadata, buyer concentration, price sanity, known x402 attack-class footguns, and wallet-drain-…
oracle.the-undesirables.com
AI-powered TCG card grading, Monte Carlo price simulation, and market intelligence. 370K+ products across 25 games. 28 API endpoints. Pay-per-call via x402 USDC on Base.
docpull.ai
PDF to Markdown extraction API for AI agents
wallet-portfolio-risk-mcp.mtree.workers.dev
x402 MCP for EVM wallet portfolio risk. Composes Aave V3 health factor, Compound III debt and liquidation status, Uniswap V3 LP position count, top-N ERC-20 holdings concentration, and GoPlus token-security flags into a 0–100 risk score wit…
docpull-production.up.railway.app
PDF to Markdown extraction API for AI agents
zlurp.ai
Web scraping API for AI agents. Convert any URL to clean markdown. Pay per scrape via x402 — no accounts or API keys required.
agentutil.net
19 utility APIs for AI agents -- fact verification, intent security, documentation search, conversion, validation, weather, time, hashing, text, math, geocoding, DNS, random, cron, color, user-agent, undo, norm, and context
norm.agentutil.net
Baseline reality checks for AI agents. Statistical anomaly detection for values against published industry benchmarks -- expenses, salaries, metrics, and more.
context.agentutil.net
Situational awareness for AI agents. Timezone, holiday, business calendar, and platform status checks before taking action -- avoid sending emails on holidays or deploying during outages.
validate.agentutil.net
Email, URL, phone, credit card, and JSON schema validation for autonomous agents
color.agentutil.net
Color conversion, palette generation, contrast checking, and color blending for autonomous agents
random.agentutil.net
Secure random value generation for autonomous agents — passwords, UUIDs, tokens, numbers, and random picks
useragent.agentutil.net
User agent string parsing, bot detection, and browser compatibility analysis for autonomous agents