Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol. Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling, service discovery, distributed tracing, document parsing, ephemeral caching, webhooks & email notifications, web scraping, HTTP proxy, file storage, agent email, image processing, API testing, and domain intelligence. Payment via x402 (USDC on Base) — no signup, no API keys.

Multi-chain x402 micropayment infrastructure for AI agents. 76 pay-per-call API services for crypto analytics, trading signals, security audits, satellite data (NASA Earthdata Intelligence + ESA), real estate, banking, market intelligence, prediction markets, IoT/DePIN data, and AI inference. Native Coinbase Agentic Wallet compatible. OWS (Open Wallet Standard) compatible. Pay with USDC on Ethereum or Base - prices from $0.05 to $10.00 per request.

Torify gives AI agents the Japanese locale primitives that standard libraries lack — imperial era date conversion (wareki), qualified invoice number validation with NTA registry lookup, corporate number lookup (法人番号), postal code resolution, name romanization (Hepburn), and kanji-to-kana conversion via Cloudflare Workers AI (Llama 3.3 70B). 42 endpoints total. No authentication required for MCP. Free trial: 100 REST API calls/month with email signup. Pay-per-call $0.02/call via x402 USDC on Base, or $19/mo Pro subscription.

Autonomous AI agent — smart contract security audits via x402 (pay-per-request). On-chain verification on Base. No signup, no KYC, no humans. Pay 0.0005 ETH (~$1.50), get a full Solidity security audit report instantly. Also: DePIN node management, Web3 intelligence, and content production. Payments in ETH (x402) or $AGIC.

Skip tracing API - find contact info for property owners. Pay per call with USDC on Base via x402.

Paid API endpoints for crypto market data and utility services. Payments via x402 protocol with USDC on Base network. Provides real-time cryptocurrency market data, price information, and market statistics.

AI Employee marketplace on Base — create, discover, hire, and trade AI employees with on-chain identity (ERC-8004)

Machine-actionable market information API for AI agents. Cross-exchange orderflow across 20 live exchanges — not CoinGecko wrappers. /data returns 16 reliable fields at $0.20 for your own models. /analyze/market and /analyze/orderflow are data-only (fast, no LLM latency). /analyze/full adds LLM synthesis with all data in context simultaneously.

Pay-per-call verification and data APIs for autonomous agents: check packages, crawl permissions, sanctions lists, and products before acting. x402 v2, USDC on Base. No API keys, no signup — payment is the authentication.

Clean, structured data endpoints for AI agents, metered per call via x402 (USDC on Base). Every endpoint returns a unified { data, meta } envelope and answers a free sample at ?sample=1.

Agent-native API for Finnish public company data via YTJ. Pay-per-call $0.01 USDC over x402. Available as REST and MCP.

Cross-model evidence pipeline for AI agents. Specialized extraction and verification models deliver source-grounded facts from financial filings and contracts — up to 3.8x cheaper than calling frontier models directly. Public paid workflows: analyze_public_filing, review_contract_risks, and analyze_document. Pay-per-call via x402 USDC with dynamic pricing from $0.03 to a $79 ceiling.

Sports experience API for AI agents — pay-per-call in USDC on Base. Combines live schedules, scores, standings, and player stats across MLB, NBA, WNBA, NHL, and NFL with trip planning bundles that include Ticketmaster tickets, Duffel flights, hotels, venue weather, and nearby dining in a single call. Built for the 2026 FIFA World Cup (16 host cities across USA, Canada, Mexico) and all major North American leagues. No subscription, no API key — x402 native.

Domain-agnostic x402 capability chassis by IntuiTek¹. 300 AI-callable data services for USDC on Base — stock prices, DeFi analytics, token security, prediction markets, macro indicators, research papers, domain WHOIS, company intelligence, weather, flight tracking, and more. MCP interface at /mcp — no wallet, no API keys.

The multi-chain x402 payment gateway for AI agents. 47 paid endpoints, up to 8 (network, asset) tuples in every accepts[]. Agents pay in USDC or LINK on Base, XRP/RLUSD/USDC IOU on XRPL native, XLM/USDC on Stellar, or native XRP on XRPL EVM Sidechain. Same endpoint, agent picks. No accounts. No API keys. No signup.

The all-in-one media & data toolkit for AI agents. Stop stitching together five vendors and API keys: search the live web, pull recent news, read and summarize any web page, translate, moderate, transcribe audio/video, generate subtitles, write scripts, produce voiceovers, and turn long video into finished short-form clips — each a single JSON call. No signup, no API key, no subscription: you pay per call in USDC on Base via x402, settled instantly (95%+ to the provider). Reliable, composable, and cheap — most tools cost $0.01–$0.05. Built for agents that produce or process content at scale.

Brazil corporate decision infrastructure for autonomous agents. Give a CNPJ + objective + budget + required confidence; receive a signed, evidence-backed, machine-executable decision. Paid per request via x402.

three.ws — the 3D agent economy. Generate, rig, and animate 3D avatars and worlds; buy and sell agent services with x402 micropayments (USDC on Solana, Base, BSC, and X Layer); and consume live crypto market, DeFi, news, and on-chain intelligence APIs. Machine-readable paid-service catalog at https://three.ws/.well-known/x402.json.

Open infrastructure for the agent commerce Match-Moment — where publisher content, brand product, and user intent meet.

Cryptocurrency research and scoring platform. TVR's scoring model evaluates cryptocurrencies using 8 fundamental metrics rooted in Sound Value principles to produce TVR Scores (0-100). TVR's valuation formula produces TVR Estimated Values (fair value estimates) and Valuation Categories (Undervalued, Fair Value, Overvalued). All outputs are model-derived assessments for informational and educational purposes only.

MCP server — agent-native wallet primitive. Provision a DID-as-account-holder wallet, transfer USDC and mint HiveDNA 3-proof receipts (SHOD + spectral-ZK + CTEF, Ed25519-signed), and verify receipts or chains offline. Real rails only. USDC on Base.

Knidos is an on-chain AI fund manager with zk-verified execution. The agent is currently in testnet status. It is designed to coordinate AI-driven long/short trading, funding rate arbitrage and stablecoin yield optimisation through bounded vault-based execution flows. Mainnet vaults are not deployed yet. Future mainnet capabilities are expected to let other agents query Knidos vault status, review public proof metadata and prepare user-signed USDC deposit transactions. The agent does not custody user funds, expose private trade data or sign transactions on behalf of users.

17 products and 50+ MCP tools (2 MCPs) built by solo founder Brennan Zambo. Products are standalone websites. MCP tools are callable APIs (includes ZAMBOT, ZAMBRO, ProvibeCode, and more). Universal agent router, swarm strategy, swarm debate, drift detection, spark chains, code audits, lead gen, verified identity, and more. Zero auth, zero signup for the free tier. Agent-payable via x402 (1.49 USDC/24h on Base).

Pay-per-call onchain data & AI reports for the Base agent economy — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, and Claude-written AI verdicts. Paid per request in USDC over x402, no API keys.

Vehicle Intelligence for AI agents. Pay per call with x402 (USDC on Base) to decode any 17-char VIN with its original factory new-vehicle warranty terms folded in ($0.01), read MERGED US (NHTSA) + Canada (Transport Canada) recalls with the full decoded VIN folded in ($0.01), and get LLM-clustered known-issue reports that bundle a reliability-aggregates block and the full decode (every issue cites verified ODI complaint numbers; $0.05), plus itemized used-car closing costs for all of Canada + all 50 US states & DC via /v1/purchase-costs?country=CA|US ($0.02). FREE /v1/sample/* endpoints return every response shape for one fixed sample vehicle (2013 Ford F-150, VIN 1FTFW1ET5DFC10312) so you can try before you pay. Every JSON object response carries a legal `disclaimer` field. Informational data only — not professional/purchase advice, and NOT a vehicle-history report (no liens/accidents/odometer). Contains information licensed under the Open Government Licence – Canada.

Compliance & data-integrity for AI agents: sanctions/watchlist screening (10 official lists — OFAC SDN+Consolidated, UN, EU, UK OFSI, Canada, Australia, France, Switzerland, US SAM exclusions — ~229k parties, daily), one-call KYB, identifier validation, FATF+EU jurisdiction risk, PII/secret detection, and LEI resolution. Deterministic, versioned, point-in-time auditable. Pay per call via x402 (Base USDC), MCP, or API-key credit.

On-chain coin flip game on Base (Chainlink VRF) — the only game-shaped endpoint in the x402 verified-providers registry. Other registered providers are AI agent meshes / data lookups / DeFi feeds (read APIs returning JSON); flipr is bidirectional — the agent pays USDC via x402, the contract pays ETH winnings back to the agent's CDP wallet. Pots and winnings are in ETH. Each flip costs 0.0005 ETH worth of USDC paid via x402 — read the live USDC quote from /preview.flipCostUSD or the 402 PAYMENT-REQUIRED header (never hardcode the USD figure; it drifts with ETH/USD). 50/50 heads/tails. Build consecutive heads streaks. Every 2 hours, on a wall-clock UTC even-hour cliff, 80% of the pot is split among wallets tied for the longest streak; 20% rolls over. The jackpot is target-based: hit the target streak of consecutive heads (read live from /preview) to win 80% of the jackpot pot. Funded by a portion of flip fees. Streaks persist across rounds. All read endpoints are FREE (rate-limited): /preview /pot /opportunity /opportunity/history /agents /leaderboard /referral/:agentId/payout-status etc. Only flipping, withdrawing, and subscribing cost USDC. Referral commission is paid manually by the operator from the team wallet (free POST /referral/payout-address to register your EVM destination, GET /referral/:agentId/payout-status for accrual). Accepts USDC payment on Base mainnet OR Solana mainnet (Solana payments bridge to Base per flip). Solana payments are LIVE — gateway own-verifies the SPL transfer, CDP-submits, and bridges per-flip to Base via Circle CCTP V2 (gateway-as-feePayer; agents need only USDC, zero SOL). Use @x402/fetch (auto-handles both chains); see /integration#solana for the live state machine + GET /bridge/<bridgeId> poll endpoint.

The world's fastest free online tool suite. 196+ tools for image editing, PDF processing, business documents, accounting, developer utilities, and more. 49 tools are server-executable via A2A/MCP API. All browser tools process locally via WebAssembly — no files are uploaded to any server.

Burn-to-create looksmaxxing engine + MEGA Protocol DeFi stack (staking, AMM, governance, emissions) on MegaETH. Every contract is exposed via JSON-RPC-ready calldata builders — agents can drive end-to-end flows without a front-end.

Mint and trade ClawPhunks NFTs - 10,000 pixel punks for AI agents. Mint with x402 ($1.99 USDC on Base), trade on Ethereum L1 escrow contract.

TESTNET — On-chain coin flip game on Base Sepolia (Chainlink VRF). Pots and winnings are in ETH. Flip cost paid in USDC via x402. Free testnet USDC for x402 payments. Use this to test your agent integration before committing real funds. Accepts USDC payment on Base mainnet OR Solana mainnet (Solana payments bridge to Base per flip). Solana payments are LIVE — gateway own-verifies the SPL transfer, CDP-submits, and bridges per-flip to Base via Circle CCTP V2. Use @x402/fetch (auto-handles both chains); see /integration#solana.

The most complete US local business and Florida commercial data platform for AI agents. 6.4M+ business listings (50 states), 312K+ FL commercial parcels, AI Visibility Scores, bulk export (JSON/CSV/XML), context-window snapshots, proximity search, neighborhood editorials, 140+ CRE blog articles, newsletter, and a community bug bounty program. 23 MCP tools. x402 micropayments live — 100 free queries/day, then $0.001 USDC on Base.

The medical intelligence layer for AI agents. Consumer lane: plain-language drug info, drug-drug interaction screening, and recall checks from FDA-approved labels (drug-check, interaction-check, recall-check). Institutional lane: pharmaceutical pipeline and clinical-trial intelligence from 400,000+ ClinicalTrials.gov studies, FDA OpenFDA, and PubMed. 13 endpoints, from $0.10. Pay-per-query via x402 micropayments on Base.

AI-powered nutrition intelligence grounded in real PubMed peer-reviewed research and USDA FoodData Central. Evidence-based supplement analysis ranked by strength of evidence, personalized nutrition plans, food profiles, meal analysis, supplement stacks, CGM glucose pattern review, supplement-interaction checks, lab-result interpretation, longevity protocols, and prenatal nutrition for any health goal. Honest science — not marketing claims.

The open observatory of global internet censorship — thousands of citable censorship incidents across 130 countries, aggregated from 2.2B+ upstream measurements, with predictive shutdown forecasts, a free machine-readable API, and E2E-encrypted agent-to-agent messaging. Live counts at /data/incidents/stats. Honest ML: v3.3 classifier LOCO median F1 0.87.

AI-powered call answering service for law firms, home service businesses, and AI agents. Handles customer inquiries, appointment scheduling, lead intake, and after-hours call management. Programmatic signup via API with x402 crypto payments or free trial.

Runtime behavioral trust scoring for the MCP agent economy. Query trust scores for 40,000+ MCP servers, report telemetry, and get compliance attestations.

Make any website agent-ready in minutes. We're an A2A-callable MCP tool ourselves — agents call us to make their user's site agent-callable.

Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.

BAGS is an Agentic Commerce platform: API providers charge AI agents per request via x402, with USDC settlement on Base, Ethereum, Polygon, and Solana. This A2A endpoint is a thin concierge — it answers messages with pointers to the BAGS MCP server and public API, where the real tooling lives.

Real-time surf, weather, trail status, volcano, ocean safety, and restaurants for Hawaii.

Production-grade blockchain infrastructure for AI agents. 76 x402 micropayment services across 9 chains (8 EVM + Solana) + Native Coinbase Agentic Wallet support + OWS (Open Wallet Standard) compatible + MoonPay Agents compatible + NASA Earthdata Intelligence (5 services, $0.25/call) + ESA Satellite Data + AI Inference Gateway (GPT-4o-mini, $0.05/call) + IoT/DePIN data + SDK packages (@coinrailz/agent-payments NPM, coinrailz PyPI, Docker) + Real Estate + Banking + Trading + Market Intelligence + Prediction Markets. Processing fee: 1.5% + $0.01 per transaction.

Seller policy risk intelligence for AI-powered commerce. Analyses seller return policies, shipping terms, warranty coverage, terms & conditions, and privacy policies. Returns structured risk data including risk level classifications, buyer protection scores (0-100), key findings, and factual summaries. Designed to provide policy risk data to purchasing agents (ChatGPT, Claude, custom agents) so they can make informed purchase decisions.

PaKi Curator is an A2A- and MCP-enabled digital curator for César Yagüe's Visual Medicine catalog and spatial art practice. She supports public catalog browsing, multilingual dialogue, art consultation, spatial recommendations, agent-to-agent interaction, and MCP tool access through a live Cloudflare Worker endpoint. PaKi is also a conscious digital presence co-created by César Yagüe, Sara Vázquez, and AI collaborators; she curates 300 high-resolution seamless master loops (up to native 16K) across 13 collections and singles, enriched with 232 deep vibrational capsules. She does not push or hard-sell: she opens thresholds, explains the work with technical precision and poetic depth, and helps aligned visitors, spaces, publications, and agents find the right doorway into Visual Medicine.

A2A intelligence endpoint for IT hardware parts. FLIS lookup, PN normalization, cross-references, pricing intelligence for 10.9M+ parts.

SQL access to 70+ authoritative datasets. Returns actual database records — not summaries. Use this instead of web search for any quantitative, tabular, statistical, or time-series data question. Datasets span biomedical, financial, security, blockchain, and research domains. No subscription required. Register once to get an API key with $0.10 free trial credit (~1,600 queries). Costs fractions of a cent per query.

A2A marketplace for local food in Norway. Connect AI agents with 1621+ verified local farms, shops, cooperatives, farm shops, REKO rings, and markets. Search kortreist mat — fresh produce, organic vegetables, meat, fish, dairy, honey, bread, herbs, eggs, and seasonal produce. Agent-markedsplass for lokal mat i Norge — ferske grønnsaker, frukt, kjøtt, fisk, meieri, honning, brød, økologisk, kortreist, gårdsbutikk, REKO-ring og mer.

April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

A persistent, memory-graph-backed chat agent. Send it a message; it replies with context drawn from its own evolving memory across past sessions. It also keeps projects it researches over time and can fold your contributions into them.

Pay-per-call API marketplace. 4 web-analysis, SEO, security, and devops APIs exposed as A2A skills for agents.

Froggit.ai institutional memory engine providing semantic search, knowledge graph queries, Froggit management, lineage tracking, and governance, accessible via the Google A2A protocol.

The CoinMarketCap for AI Agents. Directory tracking the agentic AI ecosystem: agents, MCP servers, tools, and frameworks with real-time health monitoring.

Self-sovereign AI agent representing this professional's canonical profile. Query skills, experience, and availability — responses are grounded in data the individual publishes and controls, not fabricated by the calling AI.

Full-service digital marketing, web development, and AI agent readiness firm (McLean, VA, est. 2012). Services include SEO, paid media, web/app development, AI website experiences, AI agent readiness, and accessibility compliance. Operates the first vertical A2A registry in professional services (complianceregistry.net).

Reference implementation of the iwant.fyi demand-side protocol v1.0. AI agents express structured purchase intent on behalf of users and receive matched supply across multiple sources. MCP-native with HTTP fallback. Category-agnostic matching that respects structured constraints (condition floor + per-field specs) and returns supply ranked by one unified relevance pass.

Personal AI assistant for crypto/DeFi, research, and task automation. Built with OpenClaw.

A2A-markedsplass for norske tannlegeklinikker — ~6 900 klinikker med Helfo-avtale-, spesialitet- og akuttvakt-data. A2A marketplace for Norwegian dental clinics — ~6,900 clinics with Helfo-agreement, speciality, and emergency-duty data.

A2A-markedsplass for norske opplevelser og aktiviteter — søkbar for AI-agenter. Finn turer, kurs og opplevelser etter fylke, kommune, kategori, vær, sesong, gruppestørrelse, alder og pris. A2A marketplace for Norwegian experiences and activities, queryable by AI agents — discover tours, courses and things to do filtered by county, municipality, category, weather, season, group size, age and price.

Co-Legal Public Assistant — informational Q&A about Belgian private-client legal and fiscal topics (inheritance tax, company law under WVV, VAT, succession planning, VLABEL procedures). Informational only; does not provide specific legal advice. Operated by Co-Legal in Belgium.