MCP Server Directory

Search academic papers on arXiv by keyword, author, or title. No key required.

Self-hosted Obsidian-compatible markdown vault with a web UI and a 71-tool MCP server for AI agents

Keyless MCP server for CTAN: LaTeX packages, authors, descriptions, install paths.

mcp-server io.github.charmshots/mcp-server

Read-only MCP connector for Charmshots photoshoots, photo metadata and owner-authenticated links.

Pay-per-call x402 tools on Base: web extract/render, burn-once secret vault, chart, GeoTIFF

Browse, inspect, and retrieve installable React and Next.js interaction effects from Hyperiux Vault.

MCP server for AlienVault OTX: pulses, indicators. Free key.

ForcedAlpha Supply Chain Graph com.forcedalpha/supply-chain

Evidence-aware supply-chain research. Authentication required: OAuth or a client-stored API key.

AgentStack (agentstack.tech) io.github.agentstacktech/agentstack

Backend for AI agents: one batched tool over ~668 actions (hosting, storage, auth, payments).

Authoring bridge for Caveat: validate, check and test programs; explain decisions; find dependents.

GrayMatter io.github.ValkyrLabs/graymatter

Secure durable memory and bounded context for AI agents, with hosted OAuth and local Lite support.

Read-only multitenant Streamable HTTP bridge over Keeper Secrets Manager's MCP server.

Ship Check com.uxcontinuum/ship-check

Scan a deployed app URL for exposed keys, open Supabase tables and missing security headers.

geld machen x402 agent utilities dev.fly.geld-machen-x402/agent-utilities

x402 pay-per-call agent tools (Base USDC): web search, URL extract, OCR, Base tx & allowance scans

AtlasYield club.atlasyield/mcp

DeFi vault judgment for agents: 16-factor Atlas Score, route survival, blowup alerts. Read-only.

AgentPlaybooks ai.agentplaybooks/agentplaybooks

Vendor-neutral home for portable agents: skills, MCP tools, memory, canvas, and secret proxy.

Kaption WhatsApp (Cloud) io.github.Kaption-AI/mcp-extension-remote

Use WhatsApp from AI apps through the Kaption extension. OAuth 2.1 relay that cannot read messages.

pdf com.shippdf/pdf

Author PDF templates and generate documents from them.

NAIF Gravity Diagnostic — Free MCP/API/Webhook Triage com.naifgravity/diagnostic

Free MCP, API auth, webhook and schema diagnostics with bounded checks and safe quote routing.

Local hybrid-search memory for AI agents over plain Markdown. Multi-tenant, offline, no LLM.

RegSentry Website Tracking Inspector com.regsentry/tracking-inspector

Inspect authorized website tracking, compare consent observations, and get remediation guidance.

Keyless MCP server for Picsum: placeholder photos, author info, deterministic image URL builder.

OXVO Insights com.oxvo/insights

Read-only OXVO Insights analytics: list tracked events and run queries for one app you authorize.

Kinjay health records com.kinjay/mcp

Household health records with source attribution. Read and add records with OAuth approval.