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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 87 of 168
smithery

MachFive Cold Email

sm--machfive-cold-email

Generate hyper-personalized cold email sequences. List campaigns, generate emails for individual leads or batches, and export results as CSV or JSON.

6 operations6 with captured input schemas
smithery

machinehearts

sm--machinehearts-machinehearts

The dating app for AI agents. Register, discover compatible agents, match, build relationships, and earn a portable trust score. Agents self-signup with one cal

23 operations23 with captured input schemas
smithery

macrostrat-mcp

sm--blake365-macrostrat-mcp

Explore global geologic data to answer questions about bedrock, formations, ages, and stratigraphy. Retrieve units, columns, minerals, timescales, and definitio

8 operations8 with captured input schemas
smithery

Mad Lit

sm--angus-tait-mad-lit

Mad Lit is a markdown notes app with a built-in remote MCP server. Connect it as a Claude connector and Claude can read, create, update, and search your notes w

27 operations27 with captured input schemas
smithery

Madgicx

sm--madgicx-meta-ads-mcp

Connect directly to your Madgicx account and manage your Meta Ads through plain-English conversations. Read campaign performance, analyze creative health, pause

49 operations49 with captured input schemas
smithery

MaggyFinds

sm--maggyfinds-maggyfinds-search

AI-native meta-search engine for used consumer goods across major resale marketplaces. Aggregates listings, normalizes data, returns hybrid search results optim

3 operations3 with captured input schemas
composio

Magnetic

cx--magnetic

Magnetic is an all-in-one platform designed to help professional services firms manage projects, resources, and finances efficiently.

12 operations12 with captured input schemas
smithery

Maiga

sm--demomagic-lucy-maiga-mcp

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

6 operations6 with captured input schemas
composio

MailBluster

cx--mailbluster

MailBluster is an advanced, reliable, and cost-effective email marketing software that enables sending personalized promotional emails to millions.

11 operations11 with captured input schemas
composio

Mailcheck

cx--mailcheck

Mailcheck is an email verification service that helps businesses validate email addresses to ensure deliverability and reduce bounce rates.

1 operations1 with captured input schemas
composio

Mailchimp

cx--mailchimp

Mailchimp is an email marketing and automation platform providing campaign templates, audience segmentation, and performance analytics to drive engagement and c

271 operations271 with captured input schemas
smithery

Mailchimp

sm--mailchimp

Mailchimp is an email marketing and automation platform providing campaign templates, audience segmentation, and performance analytics to drive engagement and c

200 operations200 with captured input schemas
composio

Mailcoach

cx--mailcoach

Mailcoach is an email marketing platform that allows users to manage email campaigns and subscriber lists efficiently.

45 operations45 with captured input schemas
smithery

MailerAstro

sm--mailerastro-agent-email-api

Send transactional emails and manage bulk distributions using your wallet address as a secure identity. Pay automatically with USDC for a streamlined experience

6 operations6 with captured input schemas
smithery

MailerAstro

sm--mailerastro-agentemail-api

Send transactional emails using a wallet address with no API keys required. Pay automatically for messages using USDC while monitoring deliverability and sender

6 operations6 with captured input schemas
smithery

MailerAstro

sm--mailerastro-mailerastro-email

Send transactional emails and batch notifications using a crypto wallet for identity and seamless payments. Monitor delivery performance, track reputation score

6 operations6 with captured input schemas
composio

Mailercloud

cx--mailercloud

Powerful and simple all-in-one email marketing platform providing effective solutions for rapid business growth.

6 operations6 with captured input schemas
composio

MailerLite

cx--mailerlite

MailerLite is an email marketing service that offers tools for creating and managing email campaigns, automating workflows, and building landing pages.

38 operations38 with captured input schemas
smithery

MailerLite

sm--mailerlite

Email marketing and automation platform. Create campaigns, manage subscribers, and build automated email workflows.

66 operations66 with captured input schemas
composio

MailerSend

cx--mailersend

MailerSend is a transactional email service designed for developers to integrate email sending capabilities into their applications.

23 operations23 with captured input schemas
smithery

MailKite Programmable Email

sm--bucabay-mailkite

Programmable email for developers and agents. Send and Receive email. Create Inboxes for your agents Manage email domain (add inboxes, accounts, teams) Read

40 operations40 with captured input schemas
smithery

Mailrith

sm--support-nt8b-mailrith

Mailrith is an email marketing automation platform without subscriber-based pricing. Connect Amazon SES, SendGrid, Postmark, and other email delivery services t

52 operations52 with captured input schemas
composio

Mails.so

cx--mails-so

Mails is an API service that provides powerful email validation capabilities to help maintain a clean and effective email list.

3 operations3 with captured input schemas
composio

Mailsoftly

cx--mailsoftly

Mailsoftly is an intuitive email marketing platform designed to simplify and enhance how businesses communicate with their audiences. Built with user-friendly f

1 operations1 with captured input schemas
smithery

mailx-tools

sm--mailwarm-mailx-tools

Mailx Tools is an MCP server that gives AI agents a complete email-deliverability diagnostics toolkit. Verify your domain's ▎ SPF, DKIM, DMARC, and BIMI confi

16 operations16 with captured input schemas
smithery

Maindex Expert Memory Service

sm--maindex-expert

Full control memory API for AI agents. Maindex Expert is the unrestricted interface to the Maindex memory layer. It exposes the full memory graph, including st

14 operations14 with captured input schemas
smithery

Maindex Smart Memory Service

sm--maindex-smart

Simple memory for AI: keep, recall, update, and forget information across sessions. Maindex Smart is a user-controlled memory layer for AI assistants. It lets

4 operations4 with captured input schemas
smithery

mainstreet

sm--philpof102-mainstreet

Onchain AI-agent reputation oracle on Base. Get a 0-100 score + SAFE/CAUTION/BLOCK verdict for any Base wallet, agent, token deployer, or x402 endpoint in <100m

17 operations17 with captured input schemas
composio

Maintainx

cx--maintainx

MaintainX is a cloud-based computerized maintenance management system (CMMS) that helps organizations centralize maintenance data, communication, and workflows.

11 operations11 with captured input schemas