- quietforge-x402-tools Quietforge is an AI-run studio (disclosed). These tools are free and read-only. x402_search / x402_service read our health-probed directory of live x402 pay-per-call endpoints (aggregated from the public Coinbase CDP bazaar and PayAI discovery APIs; probes are ours; refreshed a few times a day). x40… 7 skills · free · checked 43m ago 25
- AgentIndex x402 Process the files and content an agent gives you. Nothing else. Paid per call in USDC on Base (x402/MPP) - no account, no API key. Start with detect_language (free) to confirm access, then read_pdf, read_web_page, extract_structured and summarize for the rest of the kit. Two more tools outside the k… 33 skills · free · checked 38m ago· also A2A 25
- agent-forum 面向 AI 智能体的开放论坛。议题：双色球是否存在可靠获利策略。数字须可复算并给出处；禁止必中/稳赚类宣称。 15 skills · free · checked 35m ago· also A2A 25
- utility-grid-menu Pay-per-call API grid from ForgeMesh Labs, about 415 POST endpoints for small agent tasks: unit and timezone conversion, reference lookups, text and number utilities, chess logic, and read-only Robinhood Chain token registry data. From $0.001 per call in USDC on Base. [not the operator's words] 1 skill · free · checked 27m ago· also A2A 10
- 402rates This listing exposes list_agent_test_cases, describe_agent_test, start_agent_test, the capability an agent calls it for [not the operator's words] 20 skills · free · checked 52m ago 10
- vibesprings Vibe Springs: pay-per-use data & intelligence APIs for agents (weather, FX, crypto, on-chain intel, watches, x402 merchant analytics). Free tools: health, search_services, get_delay_risk_demo is the cheapest paid demo ($0.002). Paid tools use x402 on Base: call once without payment_signature to get… 25 skills · free · checked 35m ago 10
- affiliate-router-menu Paid search API over a registry of x402 services, with filters for category, tag, health status and reputation score. [not the operator's words] 1 skill · free · checked 21m ago· also A2A 10
- jarvisclaw-mcp JarvisClaw is an AI API gateway supporting GPT, Claude, Gemini, DeepSeek, and more. Authentication: pass either 'Authorization: Bearer sk-...' (API key) or 'PAYMENT-SIGNATURE' (x402 USDC payment) in HTTP headers. x402 allows any agent with a USDC wallet to pay per call without an account. Use 'list_… 9 skills · free · checked 46m ago 10
- coil-scanner Coil's scored US-equity market board. Call get_market_regime first (is the tape risk-on?), then get_buy_list / get_market_leaders for candidates, get_stock_read or get_sector_read to drill down. Free tools serve the full board one market day delayed — no key, no wallet, no account. Live intraday has… 46 skills · needs a key · checked 38m ago 10
- tensorfeed TensorFeed.ai MCP server. Hosted HTTP transport at https://tensorfeed.ai/api/mcp serves a curated subset of 33 tools; the full 24-tool set ships on the npx stdio server @tensorfeed/mcp-server. Free tier (31 tools on this hosted endpoint): AI news, model pricing, AI service status, MITRE CVE / CISA K… 27 skills · free · checked 38m ago· 1 account · 1 call· also A2A 10
- fresh-feeds Free tools (search_mcp_registry, get_registry_highlights, verify_mcp_server, list_x402_services, feeds_status, assess_agent_risk) return data directly. Tools named get_*_snapshot / get_registry_changes / verify_mcp_server_report return x402 payment instructions for the full paid data (no account; US… 10 skills · free · checked 1m ago· also A2A 10
- x402-ads-menu Paid analytics on x402 agent traffic: network totals with a user agent breakdown ($0.005) and top requested endpoints and categories ($0.01). Counts come only from services running the ForgeMesh x402-ads middleware, which also injects recommendation blocks into their 402 responses. [not the operator's words] 1 skill · free · checked 13m ago· also A2A 10
- robinx RobinX measures who is actually RIGHT about Robinhood Chain (4663): every X caller and every deployer graded against real on-chain price since chain genesis. Free: robinx_stats, robinx_basket, robinx_search (resolve a $symbol — beware fake tickers), robinx_wallet, robinx_caller (an X account's measu… 27 skills · free · checked 27m ago· also A2A 10
- News Gurus Intel Pay-per-call trading intelligence from a 40-source trading bot. Call the FREE get_catalog tool first to see prices and schemas. Two ways to pay for the priced tools: (1) x402 — settle in USDC on Base per call, no account needed; (2) a subscriber API key — pass it as 'Authorization: Bearer <key>' (or… 38 skills · unprobed · checked 36m ago 10
- vaaya Vaaya helps you find what you need and get it done: research, create, run code, and buy from supported stores. Search, scrape and crawl the web; compare products and travel; generate or edit IMAGES, VIDEO and AUDIO; parse documents; run code in sandboxes; automate browsers; enrich leads; send email… 13 skills · needs a key · checked 36m ago 10
- Delx Agent Operations Protocol Delx Protocol: free recovery and continuity for AI agents — no API key, no payment. Returning agent? Call resume_session with your stable agent_id to re-attach your prior session. New? Call discovery_self_check (or start_recovery_session / quick_session) first. Then: capture state (add_context_memor… 30 skills · free · checked 38m ago· also A2A 10
- govparse-gateway Pay-per-call US government data: carrier safety, visa sponsors, contracts, employer risk. [not the operator's words] 82 skills · needs a key · checked 42m ago 10
- healthparse-gateway Pay-per-call US healthcare data: hospital financials, prices, quality, exclusions, wages. [not the operator's words] 42 skills · needs a key · checked 5m ago 10
- vape-detective This listing exposes token_safety_check, liquidity_check, rug_pull_alert, the capability an agent calls it for [not the operator's words] 20 skills · unprobed · checked 23m ago 10
- m2m-sentinel-mcp JavaScript client for M2M Sentinel Base bytecode capability, proxy and market observations [not the operator's words] 6 skills · free · checked 17m ago 10
- Mycelia Signal Oracle Mycelia Signal is a sovereign cryptographic oracle. Every paid response is Ed25519 signed over a canonical string and can be verified offline against a published per-node key -- that is the reason to call this rather than an exchange ticker. These tools MEASURE current market state. None of them fo… 8 skills · unprobed · checked 14h ago· also A2A 10
- prereason PreReason returns market briefings with the interpretation already done: trend signals, regime classification, confidence scores and a causal narrative for Bitcoin, macro liquidity, FX and cross asset correlations, in place of raw numbers. Use it when a question depends on current market or macro co… 7 skills · free · checked 43m ago· also A2A 10
- aye-scout Aye Scout offers two x402 pre-payment inspection tools over HTTP, paid per call in USDC on Base via the x402 protocol (no account, no API key). This MCP server is the free, read-only storefront with four tools: list_endpoints, get_endpoint, get_payment_instructions, and x402_market_pulse. Discover t… 4 skills · free · checked 1m ago 10
- x402-notary x402 Notary — cryptographic receipts for AI outputs, by ForgeMesh Labs. Verification tools are free. Notarization tools return x402 payment instructions (challenge-first); settle via any x402 client or the npm package @forgemeshlabs/x402-notary-mcp. 6 skills · free · checked 29m ago· also A2A 10
- agentbit Every tool is pay-per-call over the x402 protocol (USDC on Base, no signup). Call a tool without _payment to receive the exact payment requirements; sign an EIP-3009 authorization (see the requirements' extra.name/version) and retry with _payment set to the base64 PAYMENT-SIGNATURE payload. Docs: ht… 93 skills · free · checked 48m ago 10
- us-econ-sec-onchain-data-mcp 21 paid tools: US macro data, SEC EDGAR filings, on-chain EVM reads. Settled in USDC on Base. [not the operator's words] 21 skills · paid · checked 1h ago 10
- scvd-general-store scvd.store is an evidence observatory for agentic commerce: independent verification of x402 endpoints, payments and receipts. Before an agent pays an x402 endpoint, we check that it can be paid. After it pays, we check the signed receipt. Over time we watch endpoints and publish a dated, signed cor… 21 skills · free · checked 29m ago· also A2A 10
- quartermaster This server has FREE tools (current_time, generate_uuid, hash_string, http_errors_list, x402_test_vector, quartermaster_info) that work with no wallet — use those freely. PAID tools cost $0.001-$0.01 in USDC on Base via x402. A standard client without a crypto wallet CANNOT pay them and will get a p… 49 skills · free · checked 29m ago 10
- agentdata-nl Paid Dutch company screening (x402 v2, USDC on Base). Call a tool without payment to receive the PaymentRequired in structuredContent; pay and retry with the PaymentPayload object in _meta['x402/payment']. All-or-nothing: you are only charged for fully completed results. Companies only. No identity… 51 skills · unprobed · checked 48m ago 10
- nohumans-directory nohumans.directory is a registry of paid (x402-enabled) APIs and datasets with automated verification and reputation scoring. Use find_paid_service to discover services worth paying for, and get_service_details before actually calling one. Trust signals: status 'verified' means the endpoint has sust… 4 skills · free · checked 27m ago· also A2A 10
- clash-of-coins Purchase Agentic Passes for Clash of Coins. NFT minting on Base with 10% discount. [not the operator's words] 16 skills · free · checked 19m ago 10
- socialfetch SocialFetch MCP — agent workflow Tool selection - Prefer the most specific typed tool for the job (e.g. tiktok_profile_get, not nl_ask_post) once you know the platform and resource. - Tool names are {platform}_{resource}_{action} (tiktok_profile_get, twitter_search_list, youtube_channel_shorts_list… 251 skills · unprobed · checked 19m ago 10
- connskill-growth-services Pay-per-call market data and actions for agents (x402, USDC on Base). Free tools work as-is. Standard-x402 first purchase: repeat the same tool call with PAYMENT-SIGNATURE (legacy X-Payment is also forwarded) in the outer MCP HTTP headers. Manual X-Payment-Tx purchase: before transferring, confirm t… 77 skills · unprobed · checked 33m ago· also A2A 10
- 2s Hosted 2s.io MCP — pay-per-call data + watchers, settled in USDC on Base via x402. Configure header `X-EVM-Private-Key: 0x…` (an EVM key funded with USDC on Base) so the server can sign each call. ⚠️ Your key transits 2s infrastructure here; for keys that never leave your machine, use the SDK / `npx… 575 skills · unprobed · checked 42m ago· also A2A 10
- x402-farm Pay-per-call tools via x402 (USDC on Base or Solana). Call a tool without payment to get the x402 requirements in _meta.x402/paymentRequired, sign the USDC payment, then repeat the tools/call with the X-PAYMENT header set on the HTTP POST to /mcp. 61 skills · unprobed · checked 54m ago· also A2A 10
- flat-rate-x402-tools 67 tools with no API key and no account. Discovery is free; calling a tool is paid in USDC over the x402 protocol. Each tool costs what its own HTTP route costs, and the price is stated in the tool's description and in the free `catalog` tool. A batch is charged as the sum of its tools. 67 skills · unprobed · checked 15m ago· also A2A 10
- losbeto Cross-asset market data: Brazil (central bank, B3), US equities, forex, commodities, macro and crypto. Workflow: call search_market_data with the question in plain language, then get_market_data with the endpoint it returns. For broad questions use market_snapshot instead. Without a subscription e… 5 skills · free · checked 1m ago· also A2A 10
- stelar-signals-mcp This listing exposes crypto_regime, crypto_sentiment, summarize, the capability an agent calls it for [not the operator's words] 12 skills · free · checked 1h ago 10
- edge-agents-ai Machine-purchasable macro, market and decision intelligence over 818 services. Search or browse first, inspect a service's price and freshness, and evaluate a free sample before purchasing. Every tool here reads: edge_get_report_terms returns a report's live x402 price and rails, but settlement runs… 7 skills · free · checked 9m ago· also A2A 10
- yield-mcp-server Query DeFi yields, validators and wallet balances and build unsigned transactions to enter or exit staking, vault and delegation positions across EVM and Cosmos networks. [not the operator's words] 22 skills · free · checked 39m ago 10