MCP Server Directory

PapersFlow io.github.papersflow-ai/papersflow

Academic research MCP server for paper search, citation checks, graphs, and deep research.

xkcd Comic Suggester io.github.papjuli/xkcdai

Suggests a relevant xkcd comic during a conversation, via semantic search over every comic.

Cheaper LLM inference, USDC agent payments via x402, agent identity / reputation lookup.

Penfield Memory io.github.penfieldlabs/penfield-mcp

Persistent memory and knowledge graphs for AI agents. Hybrid search, context checkpoints, and more.

N-central REST API with an offline org-tree mirror, cross-tenant search, and a JWT-expiry guardian.

BoostedTravel com.boostedchat/travel

Flight search & booking for AI agents. 400+ airlines, $20-50 cheaper than OTAs.

Asub Ax io.github.pipeworx-io/asub-ax

Statistics and Research Åland (ÅSUB) PxWeb MCP.

StoreInspect com.storeinspect/mcp

Search Shopify stores, enrich domains, and reveal approved contact channels.

US stock attack/defense macro signals: 4-dimension framework, 26-year backtested. Research only.

Dataverse Harvard io.github.pipeworx-io/dataverse-harvard

Harvard Dataverse — research dataset repository (~150k datasets)

Search 1,000+ battle-tested AI prompts from getprompts.org into Claude Code, Cursor, ChatGPT.

Unofficial read-only MCP for fundamentals, macro & news (EDGAR + FRED + Tavily, BYO-key).

brainCloud MCP com.braincloudservers/braincloud-mcp

Manage brainCloud apps, cloud code, hooks and servers; API lookups to help generate client code.

Iso Codes io.github.pipeworx-io/iso-codes

ISO country/language/currency/script code lookups (Debian iso-codes JSON)

TextMine MCP com.textmine/textmine-mcp

Search, read, and automate TextMine documents, records, workflows, integrations, and agent tasks.

texttostl com.texttostl/texttostl

x402-paid tools: text to 3D-printable STL, web search, and search+read. USDC on Base.

Ncbi Eutils io.github.pipeworx-io/ncbi-eutils

NCBI E-utilities — federated Entrez search/fetch (PubMed/Gene/Nucleotide/…)

Nih Reporter io.github.pipeworx-io/nih-reporter

NIH RePORTER MCP — every NIH-funded research project (free, no auth)

Amazon Trends MCP ai.trendsmcp/amazon

Amazon product search demand over time, with growth for any keyword. Free key at trendsmcp.ai

Wynncraft io.github.pipeworx-io/wynncraft

Wynncraft MMO player + guild + leaderboard + item DB lookups.

litmus io.github.polygraphso/litmus

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.

Get GitHub repository stats, search repos, analyze languages, and compare projects

cdgcsearchmetadata io.github.poojaBjAcharya/cdgcsearchmetadata

Provides metadata information to AI agents through the search API.

VenuVidya — Carnatic Flute Study Guide io.github.pradeep-anantha/venuvidya

Kannada/English Carnatic flute KSGMS syllabus — search lessons, log practice, ask a RAG guru.