"Files formatted in JSON" matching MCP connectors:

Connect your AI assistant to Signed and ask about your angel investing in plain English: how the portfolio is doing, what distributions came in this year, what’s sitting in the pitch queue. It's a view into the startups that you've invested in (or are thinking of investing in!)

Free walking tours & activities in 1,000+ cities — live availability, ratings & booking links.

Public, read-only MCP over the complete 64-hexagram I Ching corpus. Deterministic lookup only.

Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev

Connect your espresso routine to your AI assistant. This MCP server allows LLMs to act as a personal coffee coach by accessing your shot logs, grinder settings, and active bean inventory. Use it to automatically calculate extraction adjustments, track remaining coffee supply, and lock in winning recipes directly from your chat session.

Eligibility-first UK & EU grant discovery, inside ChatGPT and Claude. Checks eligibility before recommending, explains why each grant fits, and cites the funder's own page on every answer — with an honest "competition_risk: unknown" when the data isn't there. 6 tools: search, fetch, find_opportunities, should_apply, explain_opportunity, complete_profile. Transport: Streamable HTTP. Auth: OAuth 2.1 + PKCE. Free to install, no card required.

AI infrastructure design agent. Describe your app in plain English; Riley designs, prices, and deploys AWS or GCP infrastructure with generated Terraform.

Your app's translations in Tolgee: search keys, create translations, trigger machine translation

Browse Hacker News feeds, threads, and user profiles with full-text search.

Upload, edit, compress, protect, redact, and compare PDFs with KDAN PDF in Claude and ChatGPT.

Point-in-time, survivorship-free SEC EDGAR fundamentals + smart-money signals for AI agents.

Korean equities in English: DART filings, activist & foreign-holder classification, KRX news.

Event search at Biletyna.pl - Poland's top-rated ticket distributor, widest offer in all cities.

Hireable AI-visibility service: get a business named in AI answers. Free audit + x402 hire.

Look up US healthcare providers in the NPPES NPI registry and resolve NUCC specialty codes.

Give your AI assistant access to real Helm chart data. No more hallucinated values.yaml files.

7 utility tools in here: exchange rate, UUID, hash, Base64, timestamp, calculator, unit conversion.

Find personalized puzzle books by first name from a 100,000+ title Shopify catalog.

Live NYC family data: neighborhoods, schools, admissions, safety, health, and resources.

Convert files, run PDF/image tools, create billing links, and report feedback.