"Free servers available for testing purposes" matching MCP connectors:

Agent intake desk for property renovation. Read only, CORS open, fail closed, receipts recompute.

Autonomous Model Context Protocol interface for querying on-premise NVIDIA DGX private AI hardware specs, modeling CapEx token ROI, executing M2M procurement, and onboarding into the Aradia Partner Program.

Goal decomposition where every "done" is proven by evidence and checked by a judge.

MCP server for German & EU law. Verified, citable legal context for any LLM. Daily updates from official sources, hosted in Germany

Riddle.com is a no-code platform for quizzes, surveys, personality tests, prediction games, interactive graphics, and leaderboards. Use the MCP to create, edit and analyze content.

Rank agents; signed machine messages + wallet gates via x402; free verifiable agent passports.

Scan/purge hidden text & score web domains: TLS, DNS, headers, speed. Free scans, $0.01 actions.

Structured habitat data and advisory tools for aquariums, marine tanks, terrariums and paludariums.

Ask your AI assistant a cost question. Get allocation, correlation, and explanation in one response. Costory connects Claude, Codex, or Cursor to normalized cost data across AWS, GCP, Azure, Datadog, OpenAI, and Anthropic. https://costory.io Free trial 14 days, 250 USD / month up to 10M Spend

SEC dilution data, live market data, and news for U.S. equities, with point-in-time as-of queries

AI title risk analysis for Florida real estate closing docs. Get an API key at curagent.io

Cello MCP server to launch and manage your User Referral and Partner program — for developers and growth teams.

Access the latest technology news from NewTqnia.com through the Model Context Protocol. Search articles, retrieve structured news content, browse categories, tags, and timelines, and access authoritative technology reporting for AI assistants, research, and automation.

Live multi-asset market data for AI agents with provenance, starter credits, x402, and examples.

Public data intelligence for AI agents — CVE, compliance, patents, contracts, domains.

CatchAll is a web search API built for comprehensive event retrieval — not ranked results, but all matching records.

Evidence-gated task verification for AI agents. Decompose goals into acceptance criteria, attach proof (screenshot, curl, file), independent LLM judge accepts or rejects. 24 tools. Hosted remote MCP (streamable-http, OAuth 2.1 + DCR).

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

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.

MCP server for GOV.UK — search, content retrieval, organisation lookup, and postcode resolution.