Research MCP Servers for Perplexity

History of Alexandria, Egypt: search the archive, read articles, find events and prints.

Dated answering service prices, plans, billing terms, and comparisons at your call volume.

App Store research: new winning apps, revenue estimates, complaints and Meta ads.

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibT

Brazil Comex Stat MCP — Brazilian foreign trade statistics from MDIC

Read-only search over chinaready.co — China market entry for Western software teams.

CIA World Factbook MCP — country profiles from The World Factbook.

Paid web research tools: cited briefs, quote checks, page text. Pay per call in USDC via x402.

Real satellite audio, spectrograms and provenance through MCP.

Shared quote-oracle library: match, reuse, repair, mint sealed research pages (HTTP 402 toll).

Source-backed drone incident dossiers worldwide: search incidents, evidence states, sources, trends.

DWD Climate Data Center — daily station observations for Germany.

UK river levels and rainfall, bathing waters, flood warnings, weather, earthquakes and the GB…

Read-only search over the Founder Ventures library on bootstrapped SaaS, plus founder events.

arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

Read-only, no-auth: sourced GCC AI deals, AI agent use cases in Saudi/UAE, and Arabic AI tools.

Japan public intelligence for AI agents: earthquakes, weather, typhoons, EDINET filings. Keyless.

Lab results for phthalates and bisphenols in consumer products, plus crowdfunded testing.

Startup and SaaS tools and their alternatives, with prices and when a person last checked them.

Entity-resolved NIH grant corpus (FY1985-2026) via 14 read-only, provenance-carrying MCP tools.

Police Shootings MCP — The Washington Post, Fatal Force database