Research MCP Servers for Codex CLI

Fintech companies, products, investors, funding rounds, news, podcast. Free, keyless, CC BY 4.0.

Carbon footprints for products, carts, receipts and files — with one-step offsetting.

Findings on what compounds and supplements do in the body, with evidence strength, quote and paper.

CFPB consumer complaints: 18M records, 3.85M archived narratives. Search, counts, trends.

Verify official facts with Bitcoin-anchored proof. 180+ signals, x402 pay-per-call.

Check that a source really says what your claim says, before you publish. Verbatim, multi-path.

China Air Quality MCP — nationwide hourly AQI from CNEMC (China National Environmental Monitoring Centre).

Structured Chinese official data for AI agents: 426 entries, JSON-LD, read-only. find/get/list

Look up investment statistics by year or country and region.

Create surveys, launch them to real human respondents, and read the responses.

Citation Style Language locale shape, body discarded

Citation-health over a CC0 citation graph: what supports, refutes, or cites a paper. Read-only.

CIViC — Clinical Interpretation of Variants in Cancer.

Civil twilight hour-band UTC

Systematic medical reviews and evidence-based healthcare research

Read coExploro product teardowns: overall, UX and persona scores and top findings.

Business ideas from real public demand, scored with dated evidence. No account needed.

Detect material changes in public companies since a specified date using primary sources.

Extract structured insights from videos, podcasts, articles, and PDFs with multi-model AI

Create AI surveys with dynamic follow-up probing directly from your AI assistant.

Resolve DOIs, search ~155M scholarly works and fetch reference lists via the Crossref REST API.