Design, mock, test, document and monitor your APIs from one living OpenAPI spec.
What new websites are built with. Track adopters of your product, export with published contacts.
MCP access to the U.S. federal procurement graph: contracts, opportunities, entities, and more.
Tenant-scoped control plane over the TeleQuick platform's full API surface.
Deterministic Mexican payroll & tax math: finiquito, ISR, aguinaldo, IMSS (2026 tables).
DNS, WHOIS/RDAP, DMARC/SPF, LEI, sitemap, web extract, VAT, QR. Paid per call in USDC, no signup.
N American govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 10 countries; USA free.
Base mainnet analysis: contract audits, transfer simulation, token pricing. Paid via x402.
x402 market intel: providers ranked by real payers; seller vetting; schema drift. $0.01 auto-pay.
Verify a public listing URL and return source-supported facts or explicit fail-closed states.
Verify whether a supplied public source currently supports one atomic factual claim.
Hosted mock REST APIs as tools: seed data, import specs, query, write, snapshot, check API status.
URL to Markdown or structured JSON (schema.org/OG); renders SPA; batch reads. No signup/key.
Access Sefaria's library of Jewish texts, commentaries, and learning schedules via MCP.
Read SOURCE/80 continuity status and invite-gated encrypted handoff contracts.
Free uptime monitoring: HTTP/TCP/TLS/DNS + MCP server checks, cron heartbeats, status pages, alerts.
Provides data for LEGO sets, minifigures, parts and elements. Not affiliated with LEGO® Group.
Search DevRel tools, communities, jobs, events, CFPs, and guides from devrel.directory.
Realtime package holiday and charter flight prices from Denmark. Inventory not on Google Flights.
Read and write your team's shared, AI-readable wiki from any MCP client.
Danish address & property lookup: BBR, Matriklen, DAR, CVR. A DAWA/Datafordeler-compatible source.
Check claims against a fact-store: consistent, contradicts, or unverifiable — with a receipt.
Stress-test a decision through named thinkers' lenses: assumptions, counter-arguments, receipt.
Fact-check claims against live web sources: verdict, consensus, cited sources, PII redaction.
About Development MCP servers
Development is the broadest category on mcp.site. It covers servers that give an AI agent hands-on access to the software lifecycle: sandboxed shells and terminals, version-specific library documentation, package registries, test runners, debuggers, build and deploy pipelines, and project tools such as issue trackers. Most run locally over stdio because they need your filesystem or toolchain; a growing share run as hosted endpoints you connect with an API key or OAuth.
When choosing one, start with what the agent should be able to do without asking you, then check how the server scopes that access. Good servers expose a small, typed set of tools, document every environment variable, and let you restrict paths or repositories. Prefer listings with an Official badge or a recently updated repository, and read the install snippet for your client before adding credentials.