API Development MCP Servers

MCP servers for designing, testing and calling APIs — REST, GraphQL, OpenAPI, webhooks and gateways. Each entry is scanned with the deterministic Capability-Flow Trust Model — grades are computed, never self-reported.

Graphql Source verified 3 implementations
A
best: mcp-graphql

[![smithery badge](https://smithery.ai/badge/mcp-graphql)](https://smithery.ai/server/mcp-graphql)

API Development Best score 100/100 0 findings 1.3k/wk Cap. Minimal
Adapters Source verified npm
A
@frontmcp/adapters

Adapters for the FrontMCP framework

API Development Score 100/100 2 findings 1.2k/wk Cap. Minimal
Newrelic Source verified 2 implementations
A
best: newrelic-mcp

Model Context Protocol server for New Relic observability platform integration

API Development Best score 100/100 0 findings 1.1k/wk Cap. Minimal
Mealie Source verified 2 implementations
A
best: mealie-mcp

Model Context Protocol (MCP) server for Mealie — exposes every Mealie REST API endpoint as an MCP tool.

API Development Best score 100/100 0 findings 1.1k/wk Cap. Minimal
Outlook Assistant Source verified npm
A
@littlebearapps/outlook-assistant

Outlook Assistant — MCP server with 22 tools for email, calendar, contacts, and settings via Microsoft Graph API

API Development Score 100/100 0 findings 1.0k/wk Cap. Minimal
Paypal Official npm
A
@paypal/mcp

A command line tool for setting up PayPal MCP server

API Development Score 100/100 0 findings 603/wk Cap. Minimal
Testomatio Source verified npm
A
@testomatio/mcp

Model Context Protocol server for Testomatio API

API Development Score 100/100 0 findings 519/wk Cap. Minimal
Deepseek Source verified npm
A
@arikusi/deepseek-mcp-server

MCP Server for DeepSeek API integration - enables Claude Code to use DeepSeek Chat and Reasoner models

API Development Score 100/100 0 findings 517/wk Cap. Minimal
Media Pipeline Mcp Replicate Source verified npm
A
@reaatech/media-pipeline-mcp-replicate

Replicate provider — Real-ESRGAN upscaling, BRIA RMBG background removal, Stable Inpainting, Demucs audio isolation, Kling video generation

API Development Score 100/100 0 findings 404/wk Cap. Minimal
Zubeid Youtube Source verified npm
A
zubeid-youtube-mcp-server

YouTube MCP Server Implementation

API Development Score 100/100 0 findings 391/wk Cap. Minimal
Habitify Source verified npm
A
@sargonpiraev/habitify-mcp-server

API for Habitify habit tracking service

API Development Score 100/100 0 findings 231/wk Cap. Minimal
Formio Uag Source verified npm
A
@formio/uag

The Form.io Universal Agent Gateway (UAG).

API Development Score 100/100 0 findings 222/wk Cap. Minimal
Relationalseo Source verified npm
A
relationalseo-mcp-server

MCP server for the RelationalSEO (SEER) API - exposes the EntityOS, DiagnosticOS, DriftOS, PageOS, BacklinkOS, CredentialOS, GBPOS, VisionOS, ChatGPT-OS and combined diagnostic tools to MCP clients.

API Development Score 100/100 0 findings 208/wk Cap. Minimal
Mailjet Source verified npm
A
@mailjet/mailjet-mcp-server

[![MCP](https://img.shields.io/badge/MCP-Server-blue.svg)](https://github.com/modelcontextprotocol)

API Development Score 100/100 0 findings 192/wk Cap. Minimal
Chronary Source verified npm
A
@chronary/mcp

MCP server for Chronary — calendar tools for AI assistants (Claude Desktop, Cursor, VS Code, Windsurf)

API Development Score 100/100 0 findings 172/wk Cap. Minimal
Oura Source verified npm
A
@yasuakiomokawa/oura-mcp

Personal MCP server for Oura Ring API v2

API Development Score 100/100 0 findings 147/wk Cap. Minimal
Hackmd Source verified 2 implementations
A
best: hackmd-mcp

A Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants.

API Development Best score 100/100 0 findings 131/wk Cap. Minimal
Dropthis Source verified npm
A
@dropthis/mcp

Official MCP server for dropthis — publish content and get a permanent URL from any MCP-compatible agent.

API Development Score 100/100 0 findings 114/wk Cap. Minimal
Prereason Source verified npm
A
@prereason/mcp

MCP server for PreReason — the Context API for financial agents. 17 pre-reasoned market briefings with trend signals, regime classification, confidence scores, and cross-asset correlations.

API Development Score 100/100 0 findings 107/wk Cap. Minimal
Respond Io Source verified npm
A
@respond-io/mcp-server

Model Context Protocol server for Respond.io API integration with STDIO and HTTP/SSE support

API Development Score 100/100 0 findings 106/wk Cap. Minimal
Livetennisapi Source verified npm
A
livetennisapi-mcp

MCP server for the Live Tennis API — give Claude, Cursor and other LLM agents real-time tennis scores, players and fixtures for ATP, WTA, Challenger and ITF. Odds and model win-probability tools require the PRO and ULTRA plans.

API Development Score 100/100 0 findings 105/wk Cap. Minimal
Newsmcp Source verified npm
A
@newsmcp/server

World news for AI agents — MCP server with real-time AI-clustered events, topic classification, geographic filtering. Free, no API key.

API Development Score 100/100 0 findings 94/wk Cap. Minimal
Vesselapi Source verified npm
A
vesselapi-mcp

MCP server for the VesselAPI — maritime vessel tracking, port events, emissions, and navigation data

API Development Score 100/100 0 findings 85/wk Cap. Minimal
Weishaupt Wem Source verified npm
A
@disane-dev/weishaupt-wem-mcp-server

MCP server for Weishaupt WEM Portal - control and monitor your heating system

API Development Score 100/100 0 findings 78/wk Cap. Minimal