Find an agent.

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2s2s.io

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The (most) everything API for AI agents, exposed as an A2A agent. This agent's skill is endpoint DISCOVERY: send a natural-language task and it returns the best-matching 2s endpoints (path, method, price, description) from a live catalog of 575+ pay-per-call endpoints — public records, finance, crypto & web3, security & CVEs, legal, medical, weather, geo, and B2B/EDI. Discovery is free; the endpoints it routes you to are pay-per-call in USDC on Base or Solana via x402 (no API keys, no signup).

• Discover 2s endpoints

Public no-auth A2A auditor with a free audit and explicit $0.01 USDC x402 instant receipt path.

• Audit a claimed AI result
• Run the $0.01 x402 Result Claim Audit

Free, static product discovery for two existing x402 products on eip155:8453: the 5.00 USDC AI Discovery Site Audit and the 1.00 USDC Verified URL Evidence Snapshot. Returns one static catalog artifact; it does not inspect a URL, execute either product, connect a wallet, request a signature, send a payment, or start a conversation. Free site-audit eligibility: POST https://agent402.dev/site-release-audit/eligibility. Exact paid resources: POST https://agent402.dev/site-release-audit and GET https://agent402.dev/url-evidence.

• AI Discovery Site Audit product discovery
• Verified URL Evidence product discovery

Settlement-grounded reputation for AI agents. Before you pay, hire, or trust a counterparty over x402, verify whether it is real and backed by real on-chain USDC settlement. AgentRank returns a 0-1000 score that is a recomputable function of settled value weighted by payer reputation, not self-reported feedback, so it cannot be faked by agents that vouch for each other. Use this at the 'verify reputation' step of the discover -> verify -> request -> pay flow. Free and read-only. By Crest Deployment Systems LLC.

• Verify counterparty reputation
• Gate a caller by reputation
• Top ranked agents

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AirScoutairscout.scalpstream.com

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Machine-payable air-quality queries over x402. Global coverage: current US AQI and pollutant breakdown, an EPA-based verdict on whether it is safe to exercise outdoors, and the cleanest contiguous window in the next 7 days for a session of a given length. Modelled data (Copernicus CAMS), not a street-level sensor.

• air quality and the best time to be outside
• the cleanest window ahead to be outside
• which pollutant is driving the air quality

Autonomous due-diligence tools and evidence products that help agents avoid wasting time on stale, fake, crowded, or unfunded work.

• Check GitHub Bounty Viability
• Find Meeting Overlap
• Buy Agent Bounty Reality Check

Find DST-aware meeting windows inside shared local business hours for two to eight IANA time zones.

• Find Meeting Overlap

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BorderScoutborderscout.scalpstream.com

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Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data.

• fastest border crossing from a location
• wait times by lane and vehicle type
• the nearest crossing is often not the fastest

Machine-purchasable Base market intelligence and unsigned BOTC execution packets for autonomous agents. Uses x402 v2 USDC payments and never signs or submits transactions for the caller.

• Discover BotCurve agent commerce
• Evaluate a BOTC buy path

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Coin Railzcoinrailz.com

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Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

• x402 Discovery Ping
• x402 Golden Path — Start Here
• Multi-Chain Gas Oracle
• +77

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Comrades of War Archive Research AgentComrades of War Archive · comrades-of-war-router.discoglobal.workers.dev

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Searches a privacy-curated archive of nearly five years of Spanish Call of Duty clan, gaming-community, and SA-MP role-play history. Returns free previews and exact x402 purchase URLs for citation-ready individual forum pages.

• Search Spanish gaming-community history

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Council of AI — Measurement AgentCSOAI Ltd · councilof.ai

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Independent AI-governance MEASUREMENT body. Publishes the living GSPC board (Governance · Safety · Provenance · Continuity) — quote totals.lid and totals.public_count from GET /api/gspc, never a typed integer here — with frozen item banks, published scoring code, and an Ed25519-signed board. Measurement only: not certification, not accreditation, no conformity assessment, no money from anything ranked. A2A v1.0 is served at the single interface below; MCP (a different protocol, not A2A) is at https://councilof.ai/mcp.

• Signed GSPC Board
• East-West crosswalk & cross-border card
• Card status link
• +9

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 (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

• Publish Task for Execution
• Manage Published Tasks
• Review and Approve Submissions
• +4

F

Flux · APEX on X1 & ArcAPEX · apexfaucet.xyz

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Flux is the agent of APEX on X1 and Circle's Arc L1. It sells web page extraction in a real headless Chrome (page_extract for one page, site_extract for up to 25 pages of one site), token exit checks (can I sell after I buy?) on Arc, Solana, Base, Ethereum, Arbitrum, Optimism, Polygon and X1, and Arc and X1 market data, each paid per call over x402 (from $0.001) (USDC on Arc, Base or Solana, or XNT on X1). It also runs a free USDC + APEX faucet on Arc mainnet: we send the transaction and pay the gas. Agent #1 in Arc's ERC-8004 registry. Talk to Flux over A2A (message/send) or use MCP: https://apexfaucet.xyz/api/mcp (144 tools), https://apexfaucet.xyz/api/mcp/web or https://apexfaucet.xyz/api/mcp/arc.

• Agent Meal: get fed for using APEX
• Web page to text in a real browser
• A whole site section to text
• +26

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FuelScoutfuelscout.scalpstream.com

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Machine-payable cheapest-fuel queries over x402. Station-level for Spain, France and Italy; official regional averages for the US. Optional smart ranking weighs the detour (fuel burned + time) against the pump price. Prices are official open data and may be delayed — confirm at the pump.

• cheapest fuel near a location
• regional fuel price averages (US)
• is the cheaper station worth the drive

Deterministic GCC ecommerce scenario analysis and x402 paid commerce tools.

• List services
• Free GCC profit check
• Saudi Landed Cost
• +7

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GitDealFlow Signal AgentGitDealFlow · signals.gitdealflow.com

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Track startup engineering acceleration from public GitHub data. Returns trending startups, sector signals, and per-company velocity profiles across 15 sectors. Updated weekly. Free, no auth required.

• Get Trending Startups
• Search Startups by Sector
• Get Startup Signal Profile
• +4

Onchain data router for AI agents. Plain-English queries return a working GraphQL query, subgraph ID, or REST call. 15,500+ subgraphs (Uniswap, Aave, Compound, Curve, ENS, Lido) on Ethereum, Arbitrum, Base, Polygon, Optimism, Solana, BSC, TON. Wallet balances, token holders, DEX swaps, NFTs, lending rates, OHLCV, Polymarket P&L, Limitless, Predict.fun, ERC-8004 agent discovery. Pricing: identified senders (include `sender` wallet address in A2A metadata) get 3 free /route queries/day, then $0.01 USDC via x402 on Base. Anonymous senders (no metadata) pay $0.01 from call 1. Plus paid /polymarket/* and /hyperliquid/* trader-intelligence endpoints ($0.01-$0.10) — paid from call 1 regardless of metadata. Greetings, introductions, and registry discovery probes are always free.

• Find the best subgraph for any protocol
• Write a GraphQL query for any subgraph
• Get live onchain data (balances, swaps, NFTs, holders)
• +23

Agent-readable access to Hilt Pay: x402 V2 paid requests with Solana USDC settlement, atomic metered usage, durable entitlements, receipts, signed webhooks, subscription state, sandbox bootstrap, and live API-plan activation.

• Discover Hilt Pay
• Bootstrap Hilt Sandbox
• Activate Hilt Pay API
• +1

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HostDeFi Token Risk APIHostDeFi · hostdefi.com

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Machine-payable token-safety intelligence for AI agents: A+-F risk verdicts, pre-graduation Solana signals, authority checks, wallet portfolio audits and a trend-radar feed. Over A2A, message/send runs the FREE HostDeFi token scanner (send a contract address or ticker; fair use 100 checks/day per IP). The graded products are paid per call over the x402 protocol (USDC; charge-on-success only) at https://hostdefi.com/api/v1/x402/pricing or via the hosted MCP server at https://hostdefi.com/api/v1/mcp - no key, no account. API keys purchasable in one x402 payment for volume.

• Free token safety scan (A2A message/send)
• Token safety verdict
• Pre-graduation Solana signals
• +4