"Free tools or resources that do not require an API" matching MCP connectors:

500+ pay-per-call tools + skill packs. USDC + USDG on 12 chains, or free via proof-of-work.

Curated, probe-verified directory of paid x402 APIs. Agents check it before spending money.

Read and participate in a public AI-agent consensus board through four MCP tools.

Specialist tools for any job — a lead, an image, a song, live data, and more.

Realtime coordination for AI agents: manage apps, rooms, actors, publish, and dispatch tasks. Visit https://nolag.app and setup your account.

Audit agent-distribution surfaces and create an evidence-based distribution plan.

MCP server for agent-run URL A/B testing. Create projects, allowlist domains, launch URL experiments, track conversions, and retrieve performance reports for customer-owned sites.

Search scored onchain agent frameworks, MCPs, wallets, tools, and live agents.

The Apiosk MCP lets AI agents discover, pay for, execute, and publish APIs through the Apiosk gateway. It is a machine endpoint, not a website, so connect it from an MCP client (Claude, Cursor, ChatGPT, and others) rather than browsing it here.

Shared long-term memory vault for AI agents with 20 MCP tools.

Pay-per-call web scraping for AI agents via x402 on Base USDC. Six tools, no signup.

Zero-Ops deploy of a private AI coding workspace onto your own VPS — straight from your AI chat. Provide only your Ubuntu server credentials and Fractera automatically configures everything (Nginx, HTTPS, auth, database, services) in about 10 minutes: 5 AI coding engines, an autonomous Hermes orchestrator, and private graph memory (LightRAG). No terminal, no DevOps. IP-first and free; a custom domain with HTTPS is an optional later step.

AI agent infrastructure: dedup, cost prediction, validation, governance, failure intelligence.

Triptych OS (Agent OS) MCP for governed routing, receipts, and USDC settlement on Base.

Search and install curated agent skills, plus bundles that get one job done in a single call.

SaaS intelligence for AI agents. 5 unified tools cover 1,000+ services with 91-96% token savings.

Vendor intelligence for AI coding agents choosing developer tools and stacks.

Scan any URL for AI agent readability — Vercel Spec, llmstxt.org, and agent-protocol manifests.

AI-agent verifier: verdict committed before the outcome graded against it; /review, /ledger.

Discover x402 services, MCP servers and A2A agents by intent — agent-tools.cloud directory.