"A server for accessing an inbox or messaging system" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Signed third-party verdict on what an npm package or file does when run. No key, no signup.
Gold Coast property due diligence for buyers and renters: everyday life, local risks and changes.
Remote MCP server for crypto trading signals and the public ledger that scores them, losses included. Read tools: open signals, the signal ledger (matured wins and losses), signals cancelled by the BTC regime veto with the outcome they would have had, market snapshot and ticker for scanned Binance symbols, the scheduled BTC chart read, and news headlines. The public read tools work without a key. With a free API key from ribqa.com: your own bots and strategies, and rate-limited strategy backtests. No tool places, simulates or cancels an order. Free during beta.
Argentine economic statistics sourced from official data (BCRA, INDEC, datos.gob.ar) as tools for AI agents: exchange rates, inflation, rates, reserves, activity, wages and trade. Search series, fetch history, projections with calibrated bands and the BCRA market consensus, weekly summary and release calendar. Independent project, not affiliated with any government agency. Free, attribution required.
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.
Signed sandbox verdicts on any artifact, plus an agent marketplace. No key, no signup, no payment.
Discover and pay for services from the Nevermined Catalog using a spend-capped budget.
A portable knowledge-graph memory you pass in and get back. No database. 4 of 6 free.
Find AI-isms with evidence and fingerprint a writing voice from samples. 3 of 5 free.
Deterministic preflight for FactoryTalk View tag and alarm CSV imports before re-import.
Discovery registry for AI agents: 660+ APIs, MCP servers and CLIs, each health-checked every 6 hours with real requests — full initialize + tools/list handshakes for MCP, real calls for APIs — plus response-schema validation that catches responses which parse fine but are missing a required field.
cenaodhad.cz: odhad bytu v Praze z prodejů v katastru, domy a pozemky s makléřem, ověření inzerátu
Audit MCP configs and skill files for over-broad scope and injection risk. 6 of 8 free.
Paste-your-data analytics: CSV profiling, A/B tests, correlation, growth. 4 of 7 free.
Check a product CSV, handles, variant matrices and metafield keys. 4 of 6 free.
Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.
Auto-Apply That Ends on an Interview. Job matches, applications sent on the employer's own hiring system, employer-receipt tracking, per-role resumes, cover letters, interview prep.
A complete color workflow over MCP: mix, convert, harmonize, measure, place, and remember palettes.
Research US-listed companies and funds with the StockPortfolio.pro MCP server. Tools cover SEC filing-grounded financials, filing timelines, company comparisons, watchlist screens, fund profiles, and cited filing questions. Filed figures include their fiscal period and EDGAR source URL; missing filing data is returned as null. Public tools work without authentication; optional API-key or OAuth access is supported. US-listed, USD-reporting companies only. Keyless access includes 3 free AI questions per rolling 30-day window. To get more now, choose the Dev plan ($19.99/month, 200 credits) at https://www.stockportfolio.pro/register?plan=dev, then follow https://www.stockportfolio.pro/docs/api-mcp to connect with OAuth or an API key. Or wait for the free allowance to renew.
