"Information about queue-based systems or concepts" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Deterministic calendars, seasons, moon phases, retrogrades, and symbolic systems as stable JSON for AI agents via MCP. Gregorian dates 1900–2100; same date → same bytes.
Connect Claude or any MCP client to Thread Otter, a GTM agent for founders. Free tools with no key: find_buyer_threads (give it a website URL and get recent Reddit threads where that product's buyers are asking for it, report in ~3 minutes), reddit_demand_board (weekly demand across 40 communities with thread receipts), and subreddit_rules (promotion posture for 2,000+ profiled subreddits). With an API key: read your buying-intent mentions across Reddit, X, LinkedIn, and Bluesky, check your pipeline, and propose posts and reply drafts in your voice. Propose-only by design: nothing sends without your approval flow. Keys at threadotter.com/connect.
Official MCP: continuous supply-chain risk monitoring and early warning, not a one-off report. Register and create a key at https://supplygraph.ai/zk_chat_os/dashboard/dashboard.html — if you are not signed in you will be redirected to login; new users can register there. After login, open A2A / MCP and click Create Production Key or Create Sandbox Key. Send the header as Bearer <api_key> (one Bearer prefix, then the raw key). Optional for initialize and tools/list; required for tools/call.
An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.
Docs: https://docs.keenable.ai/mcp-server Keenable is a free, remote MCP server that gives agents access to the web index. Search the web with ranked results and date/site filters, then fetch any indexed page as clean markdown. Works out of the box with no account or API key.
Validate startup ideas with behavioral evidence — not opinion. Demand Discovery AI™ is a sales-agent MCP that answers founders' questions about the validation framework, the four data-signal categories (Search & attention, Conversation & pain, Adoption & spend, Capital & hiring), the Demand Score™, and the Build/Pivot/Kill verdict™. Includes 7 tools: ask a free-form question, get the validation framework, get product details, explain demand signals, compare validation approaches, get data-source
Citation-health over a CC0 citation graph: what supports, refutes, or cites a paper. Read-only.
Access FEC campaign finance data. Query data about candidates, money trails, and election filings.
Is this company actually hiring, or is the board just still up? Real dates on 187,923 roles.
Render-and-verify API: HTML/CSS to image or PDF, screenshot any URL, confirm the text rendered.
Brazilian INPI trademark & patent lookup by name, process number or holder (CPF/CNPJ).
Neutral verification registry for femtech (women's health) information sources. It indexes sources by provenance, authority tier, jurisdiction, and machine-readable compensation disclosure. No diagnosis, no efficacy claims, no referral fees.
AI agent for SAP analytics: firms, day rates, contract radar, news, concepts, studies
GBIF MCP — wraps the Global Biodiversity Information Facility API v1 (free, no auth)
Public read-only Précis Finance MCP demo with synthetic data; no account or credentials required.
Evidence-based humanoid robot data: RadarScore ratings, evidence grades A-D, prices, EU availability
Spanish/EU procurement intelligence for agents; x402 or prepaid credits.
Read historical ballads, inspect critical Voices, and publish evidence-based research.
Objective-driven deep research for AI agents, paid per request via MPP (Tempo mainnet USDC.e) - no account or API key. Free daily-limited quick search across global news and arXiv papers. Paid deep research: send an objective, get an exact quote with a planned source list, pay the challenge, and poll a tracker for a cross-source report from a real cloud Chromium browser plus AI synthesis. Optional notify_email delivers the report by email. No CAPTCHA, login, or paywall bypass.
Simplified lookup of a person's or company's lawsuits from the CPF or CNPJ. Platform-hosted, no cred
