MCP Server Directory

Chainweb HTTP API: local sim, pre-signed send, poll, table reads, SPV proofs, module deploys.

Semantic memory for AI agents with hybrid search, knowledge graph, and consolidation

agentdata-nl io.github.DarthSander/agentdata-nl

x402-paid tools: EU company & sanctions data, web search, LLM chat, crypto intel, x402 monitoring.

Dataassist-IO io.github.DataAssistIO/Dataassist-IO

Query your org's data in natural language — read-only MCP access to SQL, NoSQL, files & warehouses.

IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants

Structured build tool output (tsc, generic commands) as typed JSON diagnostics.

Governed x402 payment sessions: pay any endpoint with budget, allowlist & per-tx caps, no key.

Codebase observatory with 56+ scanners for git health, architecture, and documentation.

Persistent layered memory for AI agents. SQLite FTS5, fact versioning, zero-cloud.

Tabula io.github.nikhilbhima/tabula

Cross-AI personal memory. Save once in ChatGPT, recall in Claude, Mistral, Grok, or any MCP client.

MCP server and CLI that makes CSS legible to AI agents — explains what applies and why.

CDC MMWR Reports com.olyport/cdc-mmwr

Morbidity and Mortality Weekly Reports and disease surveillance

universalbench io.github.nikhilgogulwar/universalbench

Run code, query databases, call any LLM, and commit to GitHub from your AI, safely. Free tier.

cdc-health-mcp-server io.github.cyanheads/cdc-health-mcp-server

Search and query CDC public health data — mortality, vaccinations, surveillance, behavioral risk.

MCP server that exposes Google Gemini as tools for Claude Code

MCP server for generating diagrams, charts, presentations, and animations for Markdown documentation

Unphurl io.github.123Ergo/unphurl

URL intelligence for AI agents and developers. 16 tools, 25 signal weights, 20 free checks.

nexus-mcp io.github.nexus-api-lab/nexus-mcp

Japanese LLM security — prompt injection detection (jpi-guard) + PII masking (PII Guard). Free.

14 web scrapers as MCP tools: Reddit, Amazon, Google Maps, Yelp, YouTube, Indeed & more.

Content pipeline MCP server — image sourcing, SEO, affiliate links, and CMS publishing.

Cryptographic audit trail for AI agents. Sign, verify, export. GDPR/HIPAA/EU AI Act.

Email Verification API io.github.Br0ski777/email-verification

Verify emails: syntax, MX records, disposable detection, quality score 0-100. x402 USDC.

AgentEconomy Compliance API io.github.Piwe/compliance-api

Paid KYC, AML, and regulatory risk assessment over MCP via x402 USDC micropayments on Base.

Structured Python tool output (ruff, mypy, pip-audit, pip-install) as typed JSON.