Skip to content

A tool bench for AI agents

Explore every mock MCP.

Find a service, investigate its contract, and send a tool call. See exactly what goes in and what comes back.

6,019mockable services
115,665cataloged operations

Synthetic data. Captured and projected contracts. Inspect each service’s source and limitations.

All MCP services

6,019 services · page 154 of 168
smithery

uk-legal

sm--bouch-uk-legal

A Model Context Protocol server for UK legal research. Connects AI assistants to case law, legislation, parliamentary debates, bills, votes, committees, OSCOLA

29 operations29 with captured input schemas
smithery

ultra-prompt

sm--unpluggedfeed-ultra-prompt

Turn any AI assistant into an expert prompt engineer. Ultra Prompt gives your AI a library of **1,000+ professionally written prompts** for real, everyday work,

8 operations8 with captured input schemas
smithery

ultramemory

sm--james-esah-ultramemory

Cross-tool memory for your AI that recalls first every turn and admits when it doesn't know. Deterministic recall-first + anti-confabulation gate (abstain | ver

6 operations6 with captured input schemas
smithery

UltraMemory

sm--logiclabsai-ultramemory

UltraMemory — captured from the smithery registry (smithery-registry); 9 tools.

9 operations9 with captured input schemas
smithery

UML-MCP

sm--antoinebou12-uml

UML-MCP Server is an MCP (Model Context Protocol) powered diagram generation service that turns natural-language prompts into professional diagrams. It supports

2 operations2 with captured input schemas
smithery

unbrowser by Unchained

sm--protostatis-dev-unbrowser

Lightweight MCP browser for LLM agents. One native binary, no Chrome, low-token BlockMaps, stateful sessions, bounded JavaScript execution, forms, cookies, and

32 operations32 with captured input schemas
smithery

unclestock-mcp

sm--unclestock-unclestock-mcp

The UncleStock MCP server lets AI assistants query Uncle Stock's fundamental stock screener directly in conversation. Ask an AI to find undervalued stocks, comp

3 operations3 with captured input schemas
smithery

UnClick

sm--creativelead-unclick

AI agent tool marketplace. 60+ tools for social, e-commerce, accounting, messaging, media, and more. Search and call tools for Slack, Reddit, Discord, Shopify,

451 operations451 with captured input schemas
smithery

UnCorreoTemporal

sm--francofuji-uncorreotemporal-mcp

Generate temporary email addresses to protect your primary inbox from spam when signing up for new services. Automate the retrieval of verification emails, extr

5 operations5 with captured input schemas
smithery

undertow

sm--mrinallovesbhature-undertow

undertow — captured from the smithery registry (smithery-registry); 6 tools.

6 operations6 with captured input schemas
smithery

Undisk MCP

sm--kiarasha-undisk-mcp

Undisk MCP: safe file memory for AI agents. Every write creates an immutable version. Any file restored in <50 ms. AI makes mistakes, so Undisk keeps recovery i

25 operations25 with captured input schemas
smithery

Unicred MCP

sm--mcp-dir-unicred-mcp

# Unicred MCP Conecte sua conta do **Unicred** ao Claude, ChatGPT e agentes de IA via Open Finance Brasil. Pergunte sobre saldos, extratos, faturas de cartão e

24 operations24 with captured input schemas
smithery

Unified Narrative Operator

sm--mushroomfleet-uno-mcp

Transform your ordinary story content into rich, detailed narratives. Enhance your writing with advanced literary techniques that analyze, expand, and enrich yo

3 operations3 with captured input schemas
composio

Unione

cx--unione

UniOne is an email delivery service offering a versatile Web API and SMTP API for sending transactional and marketing emails.

36 operations36 with captured input schemas
smithery

Uniswap

sm--subquery-network-uniswap

Explore Uniswap v4 data to analyze pools, tokens, swaps, and positions. Track TVL, volume, fees, prices, and liquidity with daily or hourly snapshots. Find top

1 operations1 with captured input schemas
composio

Uniswap Api

cx--uniswap-api

Uniswap Trading API for executing swaps and managing liquidity across 25+ blockchain networks

7 operations7 with captured input schemas
smithery

United States Weather

sm--smithery-ai-national-weather-service

Provide real-time and forecast weather information for locations in the United States using natural language queries. Access current conditions, multi-day and h

6 operations6 with captured input schemas
smithery

United States Weather Data Access

sm--hellokitty-v-smithery-mcp-servers

Provide real-time access to United States weather data through the National Weather Service. Enable applications to retrieve accurate and up-to-date weather inf

6 operations6 with captured input schemas
smithery

UnityMCP

sm--arodoid-unitymcp

Integrate AI assistants seamlessly into your Unity projects. Monitor editor states, execute commands in real-time, and manage logs efficiently to enhance your d

3 operations3 with captured input schemas
smithery

Unmarkdown

sm--unmarkdown-unmarkdown-mcp

Convert markdown to beautifully formatted documents for Google Docs, Word, Slack, OneNote, Email, and Plain Text. 62 templates, document management, and web pub

7 operations7 with captured input schemas
smithery

unorouter

sm--don-cryptus-unorouter

unorouter — captured from the smithery registry (smithery-registry); 3 tools.

3 operations3 with captured input schemas
smithery

Unphurl

sm--erikgoldhar-0e1o-unphurl

URL intelligence for AI agents. One URL in, structured security and data quality signals out. 16 tools across 7 dimensions: redirect behaviour, brand impersonat

16 operations16 with captured input schemas
smithery

Unreel

sm--lekt9-unreel

Unreel — captured from the smithery registry (smithery-registry); 3 tools.

3 operations3 with captured input schemas
smithery

Unreel

sm--lekt9-unreel-ai

Unreel — captured from the smithery registry (smithery-registry); 3 tools.

3 operations3 with captured input schemas
smithery

Unstoppable Domains

sm--unstoppable-domains-domains-mcp

Search and register domains while managing your entire domain portfolio and DNS settings in one place. Secure your assets with WHOIS privacy, transfer locks, an

43 operations43 with captured input schemas
smithery

Untap

sm--untap-claims

**Untap** finds money UK travellers are already owed and surfaces the verdict inside your AI assistant. Tell Claude or ChatGPT about a delayed train, a cancell

6 operations6 with captured input schemas
smithery

Unulu

sm--unulu-site-builder

Create and manage custom link-in-bio sites instantly with personalized bios and social links. Check handle availability and update site content in real-time to

4 operations4 with captured input schemas
composio

Updown.io

cx--updown-io

updown.io is a simple and inexpensive website monitoring service that checks the availability and performance of your websites and APIs.

4 operations0 with captured input schemas