MCP servers for HTTP / API

HMAC-SHA1 hex length, input discarded

Count current Hacker News front-page stories. Titles discarded.

Real sold prices for 16M+ sports and trading cards: raw and graded by grade, with card page links.

Vietnam stocks, foreign/proprietary flows, macro, ETF flows, forex, crypto. Read-only, cited.

Hogsheads to liters, number discarded

Verify Japanese companies, invoice-issuer registrations and addresses against government open data.

U.S. federal holidays with observed dates and business-day math. Example from an open-source kit.

Holiday Pay Calculator NZ: the site's own MCP server — calculator, enquiry (enquiry = a human...

Free, keyless public holidays lookup for any country and year, plus single-date holiday checks.

Hollerdex: a domain's public emails, phones and social profiles as one ranked contact card.

Find open models and get download links with the SHA-256 each file must have.

34 read-only Canadian mortgage, tax and home-buying tools, including nationwide LTT coverage.

Homechecker's professionally authored Australian homebuyer guides: search, cite, build checklists.

Home cleaning and aircon servicing in Singapore: coverage, open times, exact prices and booking.

Generate static QR codes (URL, WiFi, vCard, pixel art) and decode QR images. Codes never expire.

Query Honeycomb observability data: traces, events, metrics, SLOs, triggers, and boards.

Google Ads, GA4, Search Console, Meta, LinkedIn and more for agencies, via one hosted MCP.

Restaurant fire-safety & service-interval tracking (NFPA 96/17A) — read-only demo tools.

Search Robinhood Chain ecosystem projects, retrieve project details, and list categories.

Public webhook inboxes for agents. Receive OAuth redirects, payment callbacks and CI notifications.

Webhook, email, WebSocket and tunnel testing for AI agents: capture, wait, verify, replay.