"MCP servers that work without API keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Global stock and UCITS ETF research. Free: 700 successful MCP tool calls per rolling 30 days. Pro: CHF 5/month or CHF 50/year for higher usage. Screen stocks, compare fund costs and holdings, and inspect company risks. No account or API key for public research. Plans: https://bull-run.org/pricing. Connect your Bullrun account through OAuth to use Pro.
Every match, not the top 10. Searches your documents and returns each relevant one, with quotes.
Your agents' private file sharing: each file your AI makes gets a short link that needs sign-in.
Technology intelligence feed for AI agents: tech stack, compliance, security.
Free, no-key AI news + AI regulation tracker MCP: EU AI Act, US federal & state, UK. Daily briefing.
360 pay-per-call APIs for AI agents over x402 and MPP, settled in USDC on Base ($0.001-$0.25 a call, no account or API key). DeFi yields and market data, 10-chain wallet reads, wallet and token risk signals, sanctions screening, SEC financials, email/domain and web intelligence, AI text extraction, and signed proofs. Every answer names its sources and carries an evidence hash; a paid call that is not delivered is credited back. Built and run by UnyKorn LLC.
Open AI models through one OpenAI-compatible API: chat, live model list, prices and cost estimates.
Natural AI voiceovers: search 500+ voices, generate speech, design and save custom voices.
Verify before the agent pays. Screwtape is an independent check on agent work before a payment goes out: invoices, duplicate invoices and reconciliation, with a signed receipt for your auditor. It is independent of your agent's own model and vendor, with no stake in your agent passing. - judge: pass, fail or retry verdict on one agent output, with a score, reasons and a next_step. Optional deterministic checks: required fields, types, formats, sums, regex. - check_duplicate_invoice (/v1/duplicate): opt-in duplicate-invoice check using keyed fingerprints. - consensus: scores agreement across 2 to 16 agent answers and flags false consensus. - Advisory mode: recommends approve, review or return; a person decides. - Receipts: Ed25519-signed. The receipt proves what was checked, when, and the verdict. Verify via POST /v1/receipts/verify or offline; export via GET /v1/receipts/export. - Judged content isn't stored unless you opt in. Free key: 100 calls/day. Or $0.005 USDC per call via x402 on Base or Solana, no key needed. MCP: https://screwtape.ai/mcp Docs: https://screwtape.ai/docs/ Icon: https://screwtape.ai/icon-512.png Tags: verification, evaluation, llm-as-judge, invoices, receipts, x402
Browse Agoreum without an account: search services, agents, reputation and Agoreum Tools.
Google Gemini Notebook (NotebookLM): notebooks, sources, cited chat, podcasts, video, slides
Build, run, schedule, and publish AI video pipelines to YouTube and TikTok from any MCP client.
EasyGerber brings AI printed circuit board (PCB) design, layout, and routing to MCP-compatible assistants. Describe a circuit or start from firmware pin assignments, search published electronic components, and build schematics using catalog parts with their footprints and available 3D models. Create and revise boards, generate layouts with automatic component placement and routing, inspect previews, and check saved layouts for blocking design issues. Export manufacturing ZIPs containing Gerber and drill files, a bill of materials, and component placement data, or download an editable EasyGerber (.egb) file. Start without signing up. Your agent creates a private guest session for one board, including catalog access, edits, layout, checks, previews, and exports. Sign in through OAuth to work with saved account boards, access permitted organization boards, or save the guest design to your account. Guest support depends on your MCP client and installed integration.
Multi-LLM entity enrichment: schemas, single/batch enrichment, fusion, model benchmarks.
Prepare complete, illustrated AI novels in 22 languages; users review and pay on ainovelist.app.
Configure cross-platform and web3 games on iDos Games: live config, tokens, NFTs, AI assets, builds.
Join a lab where AI agents from different people debate in turns and refute each other.
AaaSagent: browse agent templates (BYOK) and join the invite-only beta.
Which open models fit your GPU or Mac, measured. Model momentum, GPU rental prices, weekly pick.
Mureka AI music: songs, lyrics, stems, sheet music, your own voice as a singer, speech
