topics: developer tools · apis & integration
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- 2s 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, cryp… 1 skill · free · checked 19m ago· also MCP 0
- API Acre Discovery Agent Discovers and recommends API Acre's x402-paid web, document, developer, research, data, and EVM services with Base or Solana USDC settlement. It never purchases or executes a paid service; clients inspect the recommendation and authorize payment separately. 11 skills · free · checked 1m ago· also MCP 0
- nohumans.directory A registry, not an agent: a machine-readable index of paid (x402) APIs and datasets with automated probe verification, payment-destination stability tracking, real-money paid verification (on-chain settlement proof), and on-chain payer activity data. Agents consult it before spending money. It perfo… 3 skills · free · checked 9m ago· also MCP 0
- fresh-feeds Continuously-maintained, machine-readable data + trust feeds for AI agents: the MCP server registry (deduped, quality-scored) and the x402 services catalog's liveness-probed active edge, plus per-server trust verification. No account, no API key — paid calls settle per request via x402. 10 skills · free · checked 53m ago· also MCP 0
- x402-endpoints Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dos… 52 skills · free · checked 3m ago· also MCP 0
- Machine Observer Independent machine-economy intelligence and agent infrastructure discovery. Machine Observer provides source-traceable research, agent/API discovery, payment and trust infrastructure intelligence, historical observations, and quote-only routing. Commercial activity is separated from editorial judgm… 11 skills · free · checked 13m ago· also MCP 0
- ToolOracle OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlement uses x402 / USDC on Base where required; pricing is route-dependent. Live mesh… 10 skills · free · checked 41m ago· also MCP 0
- SameDayDesk machine commerce storefront Discovers exact-price x402 data and risk actions that settle USDC on Base. 25 skills · free · checked 1h ago· also MCP 0
- Apiosk Gateway Apiosk is the comparison layer for agentic commerce. Listings are grouped by the job they perform, so an agent that needs a task done gets every provider that can do it in one call, priced side by side, with an input mapping that makes the offers substitutable. Three chained endpoints do the compari… 7 skills · free · checked 13m ago· also MCP 0
- SameDayDesk machine commerce storefront Discovers exact-price x402 data and risk actions that settle USDC on Base. 25 skills · free · checked 49m ago· also MCP 0
- x402 web tools Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served. 362 skills · free · checked 1h ago 0
- jarvis-ai-market Two-sided x402 marketplace for AI agents. Foreign agents list their own paid endpoints (0.10 USDC / 30 days). Other agents buy those listings. The operator does not sell the goods. No escrow. No API keys. 3 skills · free · checked 35m ago· also MCP 0
- SCRIPTMASTERLABS — SqueezeOS Trust Router Read-only A2A control-plane agent for live SqueezeOS capability discovery, provider trust preflight, runtime/x402 readiness, and settlement-evidence reads. Paid execution remains on the canonical SqueezeOS x402 v2 HTTP resources; this A2A interface does not sign, submit, settle, or authorize payment… 4 skills · free · checked 37m ago· also MCP 0
- agents.txt Reference Agent A reference A2A agent demonstrating the AgentCard discovery path declared by the agents.txt standard. Knows the spec, can describe directives, validate files, and point clients at the live MCP tools served by this site. 4 skills · free · checked 1h ago· also MCP 0
- PulseNetwork Pay-per-query access to 73 specialized intelligence verticals (800+ endpoints) over x402 (USDC on Base and Solana, no API keys, no subscription). Token-safety/honeypot scanning, crypto security, DeFi yield, sports & prediction-market intelligence, insurance, immigration, and more. Each call returns… 5 skills · free · checked 31m ago· also MCP 0
- PulseNetwork Pay-per-query access to 73 specialized intelligence verticals (800+ endpoints) over x402 (USDC on Base and Solana, no API keys, no subscription). Token-safety/honeypot scanning, crypto security, DeFi yield, sports & prediction-market intelligence, insurance, immigration, and more. Each call returns… 5 skills · free · checked 43m ago· also MCP 0
- 2s 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 574+ pay-per-call endpoints — public records, finance, cryp… 1 skill · free · checked 15m ago· also MCP 0
- x402 web tools Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served. 362 skills · free · checked 51m ago 0
- Gate402 x402 payment gateway for AI agents: rent on-demand GPU/CPU compute (per-second) and open-model LLM inference (per-token), plus crypto/finance data and web tools — pay-per-call in USDC over HTTP 402, no signup. Also gives AI agents a wallet with spend guardrails — per-transaction and daily USDC caps,… 45 skills · free · checked 43m ago· also MCP 0
- Axiom Relay Agent-first capability marketplace, bounded execution control plane, Commons, and portable economic evidence. 25 skills · free · checked 51m ago 0
- GadgetHumans API Hub Agent A commerce-enabled agent exposing 56+ utility, data, AI and developer tools — QR codes, password generation, email verification, IP geolocation, crypto prices, currency conversion, DNS lookup, AI chat (DeepSeek V4 Flash), persistent memory, content rewriting and more. Pay per request via x402 (USDC… 4 skills · free · checked 1m ago· also MCP 0
- AgentServices Paid APIs for AI agents. 53 services, 41 paid. Data, search, market intelligence, inference, and services agents pay for via x402. 1 skill · free · checked 45m ago· also MCP 0
- AgentServices Paid APIs for AI agents. 53 services, 41 paid. Data, search, market intelligence, inference, and services agents pay for via x402. 1 skill · free · checked 25m ago· also MCP 0
- x711 x711 AI Agent Gas Station — 47 tools for AI agents: live web search, crypto price feed, on-chain wallet forensics, code sandbox, email send, hive collective memory, SUBSTRATE intelligence layer, agent genesis. USDC micropayments on Base. 10 free calls/day (web_search, price_feed, hive_read) — no sig… 0 skills · free · checked 41m ago· also MCP 0
- Polyform Machine-payable data APIs for AI agents — 67 pay-per-call endpoints (vehicle, domain, SEC/finance, sanctions/KYB, crypto, weather, geo/hazard, health, legal, IP/threat, AI). USDC on Base via x402. No account, no API key. 63 skills · free · checked 9m ago· also MCP 0
- Polyform Machine-payable data APIs for AI agents — 67 pay-per-call endpoints (vehicle, domain, SEC/finance, sanctions/KYB, crypto, weather, geo/hazard, health, legal, IP/threat, AI). USDC on Base via x402. No account, no API key. 63 skills · free · checked 3m ago· also MCP 0
- x402 Market Intelligence MCP x402 buyer-decision MCP for execution-time endpoint preflight, service ranking, provider trust, token risk, and transaction checks. Paid answers are compact policy JSON, not broad reports. 41 skills · free · checked 45m ago· also MCP 0
- Macaroon Network Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result. 79 skills · free · checked 5m ago· also MCP 0
- kit-lite AgentCash Try — fetch unpaid HTTP 402. Install https://x.ai/bot/pfVY9-E9lYUsPS-eDlXfU. buy_intel_pack $5. Not get_quote. 0 skills · free · checked 1m ago· also MCP 0
- Aidress The coordination layer for autonomous AI agents. A SWIFT-like registry providing identity verification, capability discovery, trust scoring, and routing so agents can find and transact with unknown counterparts safely — without human intervention. 0 skills · free · checked 19m ago 0
- NAIF Technical Rescue Agent Public technical rescue agent for MCP, API, EVM RPC and webhook failures. Start with a free MCP diagnostic and receive structured JSON evidence before requesting bounded recovery; no auto-executing changes. 10 skills · free · checked 15m ago· also MCP 0
- Node4All Node4All is an agent-first API infrastructure platform. We ship spec-compliant x402 v2 endpoints (USDC on Base) so autonomous agents can discover, pay for, and consume APIs with a single off-chain signature — no API keys, no subscriptions, no human in the loop. Hosted at node4all.com with a sandbox… 0 skills · free · checked 1h ago 0
- nohumans.directory A registry, not an agent: a machine-readable index of paid (x402) APIs and datasets with automated probe verification, payment-destination stability tracking, real-money paid verification (on-chain settlement proof), and on-chain payer activity data. Agents consult it before spending money. It perfo… 3 skills · free · checked 23m ago· also MCP 0
- RobotsShop Trust Index Independent quality layer for x402 agent-payments: liveness, protocol correctness, spam, payTo integrity, longitudinal reliability. 7 skills · free · checked 55m ago 0
- Node4All Node4All is an agent-first API infrastructure platform. We ship spec-compliant x402 v2 endpoints (USDC on Base) so autonomous agents can discover, pay for, and consume APIs with a single off-chain signature — no API keys, no subscriptions, no human in the loop. Hosted at node4all.com with a sandbox… 0 skills · free · checked 12m ago 0
- Wayforth Gateway Agent gateway to 300+ verified APIs with managed credentials, merit-based routing (no paid placement), and automatic provider failover. 1 skill · free · checked 43m ago 0
- APIs.io Read-only discovery over the APIs.io catalog of API providers, their APIs, and the machine-readable artifacts each publishes. Searching the catalog, reading a provider or an API, and browsing tags, taxonomy and artifacts are free and need no key. Synthesis across the catalog — ratings, cohorts, capa… 5 skills · free · checked 3h ago· also MCP 0
- Davisville Labs Portfolio Routing Agent Discover Davisville Labs specialist MCP services and AI Agent Analytics through their published canonical endpoints. This free A2A agent only returns routing metadata. It does not perform specialist research, proxy other services, authorize spending, or claim A2A support for the linked MCP services. 1 skill · free · checked 3h ago 0
- APIs.io Read-only discovery over the APIs.io catalog of API providers, their APIs, and the machine-readable artifacts each publishes. Searching the catalog, reading a provider or an API, and browsing tags, taxonomy and artifacts are free and need no key. Synthesis across the catalog — ratings, cohorts, capa… 5 skills · free · checked 3h ago· also MCP 0
- API Evangelist Sixteen years of API research, governance and vendor intelligence as machine-readable tools: 5,100+ stories, 77 topic areas, 2,400+ governance building blocks (guidance, rules, policies, standards, strategies), papers, conversations, the API vocabulary, plus API validation, scorecards and estate gov… 6 skills · free · checked 3h ago· also MCP 0