MCP Server Directory

meringlab/string-mcp

Query STRING interactions, enrichment, annotations, homology, and PPI networks.

sumup/sumup-mcp

Tools to explore SumUp accounts, payments, customers, and payouts.

ivanstan/tle-api

Access TLE orbital data for thousands of satellites including ISS, Starlink, and Hubble.

lnvestor/twitr-skills

X/Twitter reads, search, monitors and posting. Pay-per-call in USDC — no signup, no API keys.

Vaquill-AI/vaquill-mcp

Search US and Indian statutes, regulations, constitutions, and court rules.

New1Direction/webmcp-anything

Independent A-F trust grade for any MCP server, watched for drift. Free, never for sale.

UMHelper/next-web

Read-only University of Macau course, instructor and review data.

rad-security/mcp-server

Query the RAD Security API for Kubernetes and cloud security findings, reports and runtime data.

urldna/mcp

URL scanning and phishing triage: capture DOM snapshots, network requests and screenshots, and hunt historical scans with a custom query language.

apimatic/apimatic-validator-mcp

APIMatic MCP Server is used to validate OpenAPI specifications using APIMatic. The server processes OpenAPI files and returns validation summaries by leveraging APIMatic’s API.

dreamfactorysoftware/df-mcp

An MCP server for securely (via RBAC) talking to on-premise and cloud MS SQL Server, MySQL, PostgreSQL databases and other data sources.

nimbus-agent/Nimbus

Read-only search over a local index of your engineering stack (GitHub, Jira, Slack, PagerDuty, Datadog and more): incidents, PRs, deployments and DORA metrics.

emailens/mcp

Lint HTML email with Emailens: rendering issues in Gmail, Outlook, Apple Mail and more, per-client CSS compatibility scores, dark mode simulation and fixes.

fouradata/mcp

Web scraping that escalates from direct fetch to rotating proxy to full browser, solving anti-bot challenges and reporting which step worked and its cost.

PGYER/pgyer-mcp-server

MCP Server for PGYER platform, supports uploading, querying apps, etc.

serpdive/serpdive-mcp

Web search returning extracted page content (URL, title, date, text) instead of links, with automatic localization and an optional synthesized answer.

kenzotp/mcp-server-zuuna

Zuuna developer project management: read and update boards, cards and comments, with cards moved automatically by git activity when PRs merge.

timmx7/acheron-mcp-server

Persistent memory shared across Claude Chat, Code and Cowork, stored in local SQLite with full-text search.

uniskela/adhd-hub

Self-hosted project-continuity hub for coding agents: tracks unfinished work, progress, overlap and reminders across clients.

zzhang82/Agent-Memory-Bridge

Local-first memory for coding agents that turns coding sessions into reusable engineering memory: decisions, gotchas and domain knowledge.

ujisati/anki-mcp

Manage your Anki collection via AnkiConnect.

disco-trooper/apple-notes-mcp

Apple Notes access with semantic and hybrid vector-keyword search, full CRUD operations and incremental indexing.

taniwhaai/arai

Enforces rules from existing agent instruction files (CLAUDE.md, .cursorrules) by blocking prohibited tool calls and logging per-rule compliance verdicts.

boldsign/boldsign-mcp

Search, request and manage e-signature contracts with BoldSign.

avisangle/calculator-server

Mathematical computations: basic arithmetic, advanced functions, statistical analysis, unit conversions and financial calculations.

ahnopologetic/canvas-lms-mcp

MCP server for easy access to education data through your Canvas LMS instance.

kukapay/chainlink-feeds-mcp

Real-time access to Chainlink's decentralized on-chain price feeds.

KyaniteLabs/checkyourself

Local launch-readiness audit for AI-built apps: read-only checks, an evidence-based 0-100 score and guided fixes.

optimaquantum/claude-critical-rules-mcp

Enforces critical rules for Claude to prevent documented failure patterns, with a compliance verification checklist and rules summary.

tubasasakunn/context-apps-mcp

Productivity suite connecting Todo, Idea, Journal and Timer apps.

ErebusEnigma/context-memory

Persistent, searchable context storage across Claude Code sessions using SQLite FTS5, with AI session summaries, checkpoint recovery and a web dashboard.

Daksh-create349/Contradiction-MCP

Detect contradictions and architectural drift in Kubernetes manifests, READMEs, OpenAPI specs and Word docs, with deterministic scoring and resolution advice.

kukapay/crypto-whitepapers-mcp

Structured knowledge base of crypto whitepapers.

tradercjz/dolphindb-mcp-server

DolphinDB database integration with schema inspection and query capabilities.

gingugu/gingugu

Local SQLite memory for coding assistants: typed memories with confidence lifecycle, namespaces, knowledge graph, hybrid search and keychain credential vault.

lionkiii/google-searchconsole-mcp

Google Search Console SEO tools: search analytics, URL inspection, sitemap management, keyword opportunities, brand analysis and performance comparison.

kiwamizamurai/mcp-kibela-server

Interact with the Kibela API.

Jwrede/llmprobe

Synthetic monitoring for cloud and local LLM inference endpoints: TTFT, latency, throughput and errors, with Prometheus and OpenTelemetry export.

lnbits/LNbits-MCP-Server

LNbits Lightning Network wallet integration.

incu6us/loki-mcp-server

Query Grafana Loki directly with a discovery-first workflow: labels, values, series and LogQL queries, without requiring Grafana.

dan1d/mercadolibre-mcp

Search MercadoLibre products, get item details, browse categories, track trends and convert currencies across Latin America.

velvetway/minreestr-mcp

Search the Russian software registry for import-substitution and FSTEC/FSB-certified products, with full-text search and manufacturer listings.

lucygoodchild/mcp-national-rail

UK National Rail train schedules and live travel information via the Realtime Trains API.

simonpainter/netbox-mcp

Interact with the NetBox API.

mroops0111/openapi-mcp-gateway

Mount multiple OpenAPI specs or a FastAPI app as MCP servers in one process, exposing GET endpoints as resources and large specs through meta-tools.

bbonnin/openapi-to-mcp

Converts any OpenAPI/Swagger specification into MCP tools automatically.

Leonezz/openbaud

Local serial hardware access for coding agents with typed YAML commands, checksum validation, audited writes, lossless captures, hardware-free replay, and MCP App visualizations.

michaelellis003/paperboy

Send research papers to Kindle or Kobo: search arXiv and OpenAlex, find related work, queue papers in Zotero and deliver PDFs via email or Dropbox.