API Integration

Wrappers around third-party REST, GraphQL, and webhook APIs — Stripe, Twilio, SendGrid, GitHub, and similar services.

OAuth misconfiguration · token exposure · SSRF
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Sunex Optics

*A public MCP server that exposes Sunex Inc's lens and imager catalog to AI assistants. Five tools cover sensor search, detailed geometry (effective width/height/diagonal in mm), compatible-lens lookup with per-lens FOV and angular resolution, full-catalog product search with sample pricing and RFQ links, and a chained "recommend a lens for an imager" one-shot. Powered by Sunex's production ASP API at optics-online.com. Free, read-only, no API key required.*

sunrisesunset

Sunrise-Sunset MCP — wraps the sunrisesunset.io API (free, no auth)

by pipeworx-io

supercorp-explorium-mcp-server

MCP server for interacting with the Explorium API.

Python
superhero

Superhero MCP — wraps akabab.github.io/superhero-api (free, no auth)

by pipeworx-io

superlocalmemory

World's first local-only AI memory to break 74% retrieval and 60% zero-LLM on LoCoMo. No cloud, no APIs, no data leaves your machine. Additionally, mode C (LLM/Cloud) - 87.7% LoCoMo. Research-backed. arXiv: 2603.14588

by qualixar

Python133
Supermemory

A recreation of the Supermemory MCP with all features of the Supermemory API

@supermodeltools/mcp-server

MCP server for Supermodel API - code graph generation for AI agents

by supermodeltools

TypeScript
Superpowers.social

Hosted MCP for X/Twitter and Reddit. 12 read-only tools, no API keys, free during beta.

by superpowers

SuperSend

Manage contacts, campaigns, senders, and deliverability via SuperSend API

by Ktryberceo

superset-mcp-server

An MCP server for Apache Superset that dynamically exposes API endpoints as tools.

by Ponder

Python
SuprSend

Manage SuprSend entities — workflows, templates, users, objects, tenants — from your AI assistant.

by suprsend

TypeScript
@surajadsul02/mcp-server-salesforce

A Salesforce connector MCP Server.

by surajadsul

TypeScript
@sure-shot/mcp-server-messaging

MCP server for the Sureshot Messaging API — send rich RCS messages from any AI agent

by russjhammondsureshot

TypeScript
Surf Session Finder

Surf park sessions schedule availability and notifications for wave park surfers worldwide

by eranimore

Sutra

Context engineering engine with cognitive tools and memory structures

by 4rgon4ut

Python0
Swagger MCP Bridge

Spring Boot example that exposes SpringDoc OpenAPI operations as safe MCP tools.

by Neo1228

Swagger/Postman API Explorer

Simplifies API access by transforming complex OpenAPI/Swagger specifications into just four strategic tools for endpoint discovery, information retrieval, search, and authenticated request execution

3
swapi

SWAPI MCP — wraps the Star Wars API (swapi.dev, free, no auth)

by pipeworx-io

SwarmHaul

Multi-agent coordination protocol on Solana. Swarm formation, on-chain settlement, 14 MCP tools.

by mighty840

SwarmSync.AI

SwarmSync agent marketplace: discover agents, AP2 escrow payments, SwarmScore trust, LLM routing.

by swarmsync-ai

TypeScript
Swarm Tips — Aggregated AI Agent Activities

20 tools: play games, claim Shillbot tasks, generate videos, browse bounties. Non-custodial.

by corsur

SwiftKanban

Manage SwiftKanban boards and cards from Claude AI

by deenaik

TypeScript
Swiss Public Transport

Swiss public transport — journey planning, live stationboards, delays, and SBB ticket links.

by tpjnorton

Python
swisstransport

Swiss Transport MCP — wraps Transport Open Data API (free, no auth)

by pipeworx-io

Swiss Truth MCP

Verified knowledge base for AI Agents — certified Swiss facts, no hallucinations. Swiss Truth gives your AI agent access to a curated, expert-reviewed knowledge base — covering Swiss law, health, finance, education, energy, politics, climate, AI/ML, and world science. Every fact has passed a 5-stage validation pipeline: semantic deduplication, AI pre-screening, source URL verification, expert peer review, and SHA256 integrity signing. Confidence scores decay over time — no stale data silently served. Tools included: • search_knowledge — semantic search in DE, EN, FR, IT, ES, ZH (auto-detected) • verify_claim — fact-check any statement → supported / contradicted / unknown • submit_claim — contribute new facts through the full validation pipeline • get_claim, list_domains, get_claim_status No API key required. Fully public. Connect in 30 seconds.