Curated collection
AI Agent Tools With MCP Support
61 of the 126 tools in our index document real support for the Model Context Protocol (MCP) today: as a client, a server, or both. Frameworks and coding agents are the densest slices; sales and marketing agents the thinnest.
On this page
MCP (the Model Context Protocol) is becoming the default way an AI agent reaches your tools and data, instead of a bespoke integration per pair. See our full explainer for what it is and why it matters when you're picking an agent to build on. This collection answers the practical question that piece leaves open: which tools in our own index actually document it today.
At a glance
- agents
- 61
- curated for this set
- Free to start
- 42 of 61
- a free or freemium entry tier
- Public API
- 48 of 61
- 10 more only on a paid tier
- Publish a price
- 56 of 61
- an anchor price on their own page
What this collection covers
61 of the 126 tools here do, spanning every category in the index. Some support it as a client, calling out to any MCP server; some as a server, letting other agents call into them; several as both, including Glean, which ships MCP in both directions today.
The split isn't even. Agent frameworks and coding agents are the densest slices (13 of 16 and 20 of 27), unsurprising since MCP began as a developer-tooling protocol: Google ADK, Claude Agent SDK and Agno all document it too. Sales and marketing agents are where MCP has landed least: only Clay (a full MCP server) and 11x (one undetailed pricing-page bullet, the thinnest evidence in this set) document anything at all.
Not everything in the index is here, and the absences are not all the same kind. Some carry a documented reason on their own listing: Aider, Lindy, GC AI, Artisan, Qualified, Rox, Decagon, Bland AI, Juggler, Zot, Unify, Moveworks and Vecbase. Either they have confirmed they don't support it yet, or no MCP claim appears anywhere in their own docs, site or changelog as of this check. Aider has an open, unresolved GitHub request since December 2024; Lindy's own blog says it isn't compatible yet; Moveworks' own blog still frames MCP as "in development," not shipped.
Undermind no longer fits that group: its own pricing page names MCP support on every tier ("Free at $0 with MCP"), and it now sits among the entries below rather than this absence list.
AgentsKit is an absence of a third kind: its registry exposes an /api/mcp discovery endpoint, which indexes its own catalogue rather than acting as an MCP client or server, so it does not clear the bar this page sets. The others have not been read for MCP support since they were added, so their absence records an unreviewed listing rather than a confirmed gap: Amplemarket, Auto-Respond, Browserbase, Deepgram Voice Agent API, Genspark, Julius AI, Junie, LangGraph, Muse Code, OpenClaw, SkipCalls, Synthflow AI, Warmly and Zendesk AI Agents. A listing published since that check is in neither list yet.
How these 61 agents were picked
A tool earns a place here only when its own docs, GitHub repo, blog or changelog make an explicit MCP claim, as a client, a server, or both, not a generic "integrations" or "API" mention. Either side of the protocol counts: a tool other agents can call into qualifies exactly as one that calls out.
Two things do not. A machine-readable discovery endpoint such as /api/mcp indexes a vendor's own catalogue and is neither a client nor a server, which is why AgentsKit is recorded as an absence. And a vendor's own blog describing MCP as planned or in development is not a shipped capability, which is why Moveworks is.
Most entries here were confirmed in our original MCP census (see the full article for the per-tool sourcing). Those added to the index afterward (Warp, CodeRabbit, Salesforce Agentforce, Antigravity CLI, PolyAI, Mastra, Letta, Factory and Glean) were independently re-verified against primary vendor docs on 2026-07-25, the same pass that checked Unify and Moveworks and confirmed neither supports MCP yet.
A later group covers Zed, Microsoft Agent Framework, Botsify, Google Agent Development Kit, Claude Agent SDK, Cartesia, Webhound, Agno, Botpress, OpenAI Realtime API, Augment Code and Gemini Code Assist. These were confirmed from each tool's own already-Published, sourced listing fields (integrations and key-features) rather than a fresh vendor-docs pass, each naming MCP explicitly as a documented integration. SalesTouch was added on 2026-08-17, on a listing that describes a remote MCP server as the product's only interface.
Goose and TinyFish were added on 2026-08-18, the day after each was published. Goose is a documented MCP client and host connecting to 70+ extensions, with MCP Apps letting an extension render interactive UI inside Goose Desktop; TinyFish is an MCP server listed on the MCP registry and built for MCP clients such as Claude and Cursor to call into directly.
These facts are normally recorded on the tool's own listing as well, not stated here alone. But that is a property of our corpus on a given day rather than a guarantee: a 2026-08-16 research pass briefly dropped the MCP line from Devin, LlamaIndex and Replit Agent's own integrations fields; each was restored within a day, and all three name MCP directly again as of this check. MCP adoption is moving fast in 2026; treat this as a snapshot, not a ceiling, and check a specific vendor's current docs before relying on it for a real integration.
MindStudio and Sim were both added on 2026-08-18, the same day each was published. MindStudio names an MCP server as one of several agent deploy targets, alongside a REST API and Node.js package; Sim lists MCP support as a named platform feature, connecting workflows directly to Model Context Protocol tools and servers.
Undermind was added on 2026-08-25, the first re-review to add a tool previously recorded here as a confirmed absence. Its own pricing page names MCP support directly on every tier: Free ($0 "with MCP"), Pro ($16/mo billed annually), Team ($15/person/mo) and Enterprise (custom). That is the bar this page was written to detect: an explicit MCP claim in the listing, even when that claim lives on the pricing page rather than the docs or integrations.
The 61 agents on this shelf

Cursor
Coding agent in a desktop editor, terminal CLI, cloud VMs and CI, priced per seat plus token usage.
Coding agentsFree, then $20/monthAPIAutonomousClaudeVerified 14 days agoBest for Professional developers who want a powerful AI agent woven into a familiar VS Code-based editor, with first-class model choice and the option to be hands-off via Cursor Router.
MCP servers and tools are a core integration surface built into the editor.

Claude Code
Agentic coding tool from Anthropic that edits your codebase, runs commands, and opens pull requests.
Coding agentsFrom $20/monthAPIAutonomousClaudeVerified 14 days agoBest for Developers and teams who want a terminal-native, scriptable agent that composes with CI and real engineering workflows.
MCP servers and external tools are a core, first-class way to extend what it can reach.

Cline
Open-source coding agent for VS Code, JetBrains, the terminal and CI, running on whichever model you bring.
Coding agentsFree, then $9.99/monthAPIAutonomousClaudeVerified 5 days agoBest for Developers and teams who want a transparent, open-source, model-agnostic agent they fully control and pay for by usage, with optional flat-rate access to open-weight models.
First-class support plus its own in-app MCP marketplace for one-click server installs.

Devin Desktop
AI IDE with a Kanban command center for running local and cloud coding agents; the renamed Windsurf.
Coding agentsFree, then $20/monthAutonomousClaudeEnterpriseVerified 14 days agoBest for Developers who want a full, agent-native desktop IDE and the freedom to run several coding agents, including third-party ones, side by side.
MCP servers are a core integration, carried over unchanged into the Devin Desktop rebrand.

OpenCode
Open source AI coding agent for the terminal, desktop, browser and IDE, running any model you connect.
Coding agentsFree, then $10/monthAPIAutonomousClaudeVerified 14 days agoBest for Developers who want a genuinely free, fully open-source coding agent that works with any model provider, including their own local Ollama models, without being locked into one vendor's terminal tool.
A dedicated MCP-server integration layer sits alongside its own custom agent-skills system.

Bolt
Browser-based AI agent that builds, hosts and publishes full-stack JavaScript web and mobile apps from prompts.
Coding agentsFree, then $25/monthAutonomousClaudeEnterpriseVerified 5 days agoBest for Founders, designers and developers who want a working, deployed full-stack app straight from a prompt, Figma frame or Google Stitch design, with zero local setup.
Connects out to MCP servers (Notion, Linear, GitHub, custom) as a client: no server of its own.

Codex CLI
OpenAI's terminal coding agent for inspecting, editing and running repository code from the shell.
Coding agentsFree, then $8/monthAPIAutonomousFree tierVerified 14 days agoBest for Developers who already pay for a ChatGPT plan and want a terminal-native agent with granular, inspectable sandbox/permission controls across CLI, desktop and IDE surfaces.
MCP servers and tools are documented alongside its sandboxed execution model.

Devin
Cloud AI software engineer that takes a ticket, works in its own VM, and opens a pull request.
Coding agentsFree, then $20/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering teams offloading well-scoped migration tasks without adding headcount
An MCP Marketplace ships as a client, connecting Devin to external MCP servers.

GitHub Copilot
GitHub's AI coding assistant and cloud agent, from editor completions to pull-request review.
Coding agentsFree, then $10/monthAPIAutonomousClaudeVerified 14 days agoBest for Enterprise and team developers already in GitHub and mainstream IDEs who want governed, reviewable AI coding at scale, with optional access to Claude Code and OpenAI Codex through the same interface.
Both Copilot Chat and the autonomous coding/cloud agent connect out to external MCP servers.

OpenHands
Open-source software engineering agent with a browser client, CLI and Python SDK; local, cloud or self-hosted.
Coding agentsFree, then $0.10/1m input tokensAPIAutonomousClaudeVerified 14 days agoBest for Open source-minded engineering teams and enterprises that want a self-hostable coding agent platform
An MCP client over SSE, Streamable HTTP or Stdio transports, configured directly.

Replit Agent
AI agent that writes, tests and publishes full apps from a chat prompt in Replit's browser workspace.
Coding agentsFree, then $20/monthAutonomousClaudeEnterpriseVerified 14 days agoBest for Non-technical founders who want a chat prompt to become a deployed, database-backed app
Documented as an MCP client in Replit's own developer docs.

Factory
Droid coding agents that run in the desktop app, CLI, IDEs, CI and Factory-managed cloud computers.
Coding agentsFrom $20/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering organizations that want AI agents handling more of the SDLC than code generation alone (triage, testing, release and documentation) and are willing to pay enterprise pricing for deployment flexibility and compliance controls.
Droid is an MCP client with a built-in registry of 40+ pre-configured servers, browsable via `/mcp`.

CodeRabbit
AI code review across pull requests, IDE and CLI, with agentic fixes, pre-merge checks and security review.
Coding agentsFree, then $30/monthAPIAutonomousClaudeVerified yesterdayBest for Engineering teams, using a coding agent or writing code by hand, that want automatic, consistent PR review plus triage, explanation and continuous security across GitHub, GitLab, Bitbucket or Azure DevOps before a human reviewer looks at it.
Connects out to MCP servers as a client only: plan tier caps how many, from 5 on Pro up to 20 on Enterprise.

Antigravity CLI
Google's terminal agent: a keyboard-driven TUI that edits code, spawns subagents and gates every tool call.
Coding agentsFree, then €21.99/monthAPIClaudeFree tierVerified 7 days agoBest for Developers already inside the Google ecosystem (Google AI subscription, GCP billing) who want a free terminal agent with Gemini, Claude and gpt-oss model access, especially anyone migrating off a now-sunset Gemini CLI workflow.
Ships its own local MCP server exposing tools and prompts, plus first-party servers for Google Workspace and Data Cloud.

Warp
Agentic development environment: a terminal, a standalone agent CLI, and unattended cloud coding agents.
Coding agentsFree, then $20/monthAPIAutonomousClaudeVerified 14 days agoBest for Developers and teams who want one open platform that runs and coordinates multiple coding agents (Claude Code, Codex, Gemini CLI, Warp Agent) side by side across terminal, CLI and cloud, with shared team context and programmatic API access to cloud agent runs.
Its Oz agent CLI takes MCP server config directly (by UUID, inline JSON or file path) to reach tools like GitHub, Linear and Sentry.

LangChain
Open source agent frameworks plus LangSmith, the platform for tracing, evaluating and deploying agents.
Agent frameworksFree, then $39/seat/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering teams building a bespoke, production-grade agent who want the largest integration ecosystem plus real stateful control.
The official `langchain-ai/langchain-mcp-adapters` package makes LangChain agents a fully-supported MCP client.

CrewAI
Open-source multi-agent framework with a managed platform for deploying and governing agent workflows.
Agent frameworksFreeAPIAutonomousClaudeVerified 3 days agoBest for Developers who want to stand up a role-based, collaborating multi-agent system quickly in Python, with a stable MIT-licensed core and a hosted build and runtime for production.
An official `MCPServerAdapter` connects crews to external MCP servers as a client.

LlamaIndex
Open-source agent framework plus a credit-metered document parsing, extraction and indexing platform.
Agent frameworksFree, then $50/monthAPIClaudeEnterpriseVerified 14 days agoBest for Engineers building RAG-heavy or document-heavy agents who want an MIT-licensed OSS core with an optional managed parsing and extraction platform on top.
Both directions: consumes external MCP servers and can publish its own workflows as one.

OpenAI Agents SDK (Python)
Open-source Python framework for building agents with tools, handoffs, guardrails, sandboxes and tracing.
Agent frameworksFreeAPIAutonomousFree tierVerified 14 days agoBest for Developers who want the fastest, lightest way to ship a straightforward agent (support triage, a tool-using assistant or a sandboxed coding agent) with tracing and guardrails included.
MCP servers are a first-class external tool source, alongside human-in-the-loop approval.

Pydantic AI
Typed Python agent framework: any model, any surface, with a harness for long-running coding and research agents.
Agent frameworksFreeAPIAutonomousClaudeVerified 14 days agoBest for Python teams building type-safe agents who also want realtime voice, image generation and embeddings in one SDK, with optional durable execution via Temporal, DBOS, Prefect or Restate.
MCP servers are a first-class tool source for its agents.

AutoGen
Microsoft's open-source Python framework for building single- and multi-agent applications; now in maintenance mode.
Agent frameworksFreeAPIAutonomousClaudeVerified 14 days agoBest for Python or .NET developers and researchers exploring multi-agent orchestration who want a mature, free, self-hosted framework.
The official `autogen-ext` package is an MCP client over STDIO, SSE or Streamable HTTP.

Mastra
Open-source TypeScript framework for building AI agents, with a hosted platform for running and observing them.
Agent frameworksFree, then $250/monthAPIAutonomousClaudeVerified 14 days agoBest for Full-stack JavaScript and TypeScript teams, especially those already building in Next.js or Node, who want agents, durable workflows and memory unified in one framework without adopting a Python-first stack.
Both directions via dedicated packages: `MCPClient` connects out, `MCPServer` exposes Mastra's own tools to any MCP client.

Letta
Stateful agent harness, cloud and SDK for agents with persistent, git-versioned memory.
Agent frameworksFree, then $20/monthAPIAutonomousClaudeVerified 14 days agoBest for Developers and researchers who specifically need an agent whose memory, skills and identity genuinely persist and evolve across long-running sessions, rather than reset on every call.
Acts as an MCP host, connecting agents to external servers' tools, resources and prompts.

Dify
Open-source platform for building agentic workflows, AI agents and RAG knowledge pipelines.
Agent platformsFree, then $59/monthAPIAutonomousClaudeVerified 14 days agoBest for Developers and teams who want an open-source, self-hostable platform to build RAG apps and agents with full data control.
Any Dify app can be published as an MCP-compatible tool.

Relevance AI
Hosted low-code platform for building, evaluating and running teams of business AI agents.
Agent platformsFree, then $29/monthAPIAutonomousClaudeVerified 14 days agoBest for Revenue, ops, and customer success teams running 5+ agents in production, who want multi-agent orchestration with evals, tracing, and SSO-grade governance on one bill.
Agent actions inside the platform are directly extendable by connecting them to external MCP servers.

n8n
Workflow automation platform for building and running AI agents on a visual canvas, with code where needed.
Agent platformsFree, then €24/monthAPIAutonomousClaudeVerified 14 days agoBest for Ops and automation teams who want to build agentic workflows visually while keeping data on self-hosted infrastructure.
Both directions: a dedicated MCP Server Trigger node and an MCP Client node.

Salesforce Agentforce
Salesforce's platform for building, deploying and monitoring AI agents on top of CRM data.
Agent platformsFree, then $5/user per monthAPIAutonomousClaudeVerified 14 days agoBest for Salesforce service, sales, field-service and employee-support teams that need agents to act on CRM records and have Salesforce admin or developer capacity.
A native MCP client connects to any MCP-compliant server, plus verified AgentExchange partner servers.

Perplexity
AI answer engine with an agentic Computer, the Comet browser, and a developer API for web-grounded search.
Research & data agentsFree, then $20/monthAPIAutonomousBrowser useVerified 14 days agoBest for Researchers, analysts and knowledge workers who want fast, sourced answers, plus an autonomous research mode and an agentic browser.
Both directions: an official MCP server, plus local MCP client support.

Manus
General-purpose AI agent that plans and executes tasks in its own cloud computer.
Research & data agentsFree, then $20/monthAPIAutonomousBrowser useVerified 14 days agoBest for Individuals and teams who want to offload whole multi-step tasks (research, simple builds, data work) to an autonomous agent rather than prompt a chatbot turn by turn.
Prebuilt MCP connectors (client) to Notion, Linear, Gmail, Stripe and more.

GPT Researcher
Open-source autonomous research agent that writes cited long-form reports from web and local sources.
Research & data agentsFreeAPIAutonomousClaudeVerified todayBest for Developers and AI engineers who want a free, self-hosted research agent they can embed via Python, REST or MCP and run against their own LLM and search keys.
An MCP server is available via a companion project (`gptr-mcp`), not bundled in the main repo.

Elicit
Research agent that searches 138M+ papers and runs systematic reviews with sentence-level citations.
Research & data agentsFree, then $75/monthAPIAutonomousEnterpriseVerified 2 days agoBest for Academic researchers, R&D and policy teams, and pharma strategy groups running literature reviews or formal PRISMA-2020 systematic reviews who need cited, structured evidence pulled from published research.
An official MCP server exposes its own search and extraction API.

Vapi
Developer platform for building, testing and deploying voice AI agents that make and receive phone calls.
Voice agentsFrom $0.05/minuteAPIAutonomousClaudeVerified 14 days agoBest for Engineering teams that want maximum control to build custom voice agents on their own choice of model, voice and telephony.
Custom tools are reachable through both native function calling and Model Context Protocol servers.

ElevenLabs Agents
Hosted platform for building voice and chat agents, with telephony, SDKs and a choice of LLM.
Voice agentsFree, then $6/monthAPIAutonomousClaudeVerified 14 days agoBest for Developers and product teams who want ElevenLabs' voice quality and cloning as the foundation of their agent, and are comfortable assembling the rest of the stack themselves.
Both directions: connects to external MCP servers and ships its own official server.

Retell AI
Platform for building, testing and deploying AI voice and chat agents on phone, web and SMS, billed per minute.
Voice agentsFrom $0.07/minuteAPIAutonomousClaudeVerified 14 days agoBest for Product and engineering teams that want a low-latency, human-sounding phone agent with flexible model and telephony choice.
Both directions: an MCP server for managing agents, plus mid-call client tool calls.

LiveKit Agents
Open-source Python and Node.js framework for voice AI agents, with LiveKit Cloud hosting, telephony and observability.
Voice agentsFree, then $50/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering teams that want to own their voice-agent stack end to end, self-hosted or on LiveKit Cloud, without being locked into one vendor's API.
First-class client support, documented for both HTTP and stdio transports.

PolyAI
Enterprise platform for building voice and chat agents that resolve customer calls, priced per minute.
Voice agentsPrice not establishedAPIAutonomousClaudeVerified 14 days agoBest for Teams that want a proven, enterprise-scale, compliance-certified voice AI vendor with a research-led model roadmap, and are prepared to start with a sales conversation: there is no self-serve or free way to trial it today.
Runs its own MCP server abstracting storage and data access, on top of broader MCP-style integrations across the platform.

Sierra
Conversational AI platform for building enterprise customer-service agents across voice, chat, email and ChatGPT.
Support agentsPrice not establishedAPIAutonomousEnterpriseVerified 14 days agoBest for Large enterprises that want branded, autonomous customer agents that resolve issues end to end and are willing to run a managed engagement.
Agents are natively publishable to ChatGPT Apps via MCP (server direction).

Fin
Customer service AI agent priced per resolved outcome, deployable on any helpdesk.
Support agentsFrom $0.99/outcomeAPIAutonomousClaudeVerified 14 days agoBest for Support teams from mid-market to enterprise that want an AI agent layered over their existing helpdesk with pay-per-resolution economics, omnichannel coverage and a built-in tuning loop.
A fully documented API, data connectors and MCP support for deeper integration.

Crescendo
AI-native CX platform: agents resolving support across voice, chat, email and SMS, with a staffed team behind them.
Support agentsFrom $1.25/resolutionAPIAutonomousEnterpriseVerified 4 days agoBest for Mid-market and enterprise support teams that want a fully outsourced, compliance-ready AI-native CX operation, including live channels, without staffing or building one in-house.
Connects its Assistant to external MCP servers, and exposes its own MCP config service.

Cresta
Enterprise contact-centre platform with autonomous voice and digital AI agents plus real-time human agent assist.
Support agentsOn quoteAPIAutonomousEnterpriseVerified 4 days agoBest for Large enterprises running high-volume
MCP for standardized tool access, alongside its existing API-based CRM/billing integrations.

Ada
Enterprise AI customer-service agents that resolve inquiries across voice, chat, email and social channels.
Support agentsOn quoteAPIAutonomousClaudeVerified 8 days agoBest for Enterprises that want a long-running, well-capitalized AI support agent vendor with a public V2 REST API and an MCP server, rather than a sales-only integration surface.
Ships its own MCP server, letting external AI assistants (Claude Desktop, ChatGPT) query its systems directly.

11x
AI SDR and inbound phone agent for outbound prospecting and real-time lead qualification.
Sales & marketing agentsFrom $2,417/month billed annuallyAPIAutonomousEnterpriseVerified 14 days agoBest for Mid-market and enterprise sales teams that want autonomous AI SDRs and voice agents, have the budget for sales-led contracts, and can run a measured pilot on deliverability and booked meetings.
'Custom MCP Integration' is listed on the Enterprise pricing tier, the thinnest evidence here: no docs, no stated client/server direction.

Glean
Enterprise AI platform for building, governing and running agents on permission-aware company context.
Agent platformsPrice not establishedAPIAutonomousClaudeVerified 14 days agoBest for Large and mid-market enterprises whose biggest AI-agent blocker is fragmented, permission-sensitive knowledge scattered across 100+ internal tools, and who want employees building department-specific agents on that indexed knowledge without writing code.
Ships MCP in both directions today: an MCP server exposing Glean's own search, chat and knowledge graph to external tools (Cursor, VS Code, Claude Desktop, ChatGPT), and an MCP host connecting 17+ preloaded remote servers.

Zed
Rust code editor with an Agent Panel running Zed's own agent, ACP external agents, or terminal agent CLIs.
Coding agentsFree, then $10/monthClaudeEnterpriseFree tierVerified 14 days agoBest for Developers who want a fast, open-source editor and the freedom to run Claude Code, Codex, Gemini CLI or other vendors' own agents natively via the Agent Client Protocol Zed created, instead of being locked into one editor's built-in agent.
MCP servers extend the agent's available context and tools: a client integration listed alongside its ACP support for external coding agents like Claude Code and Copilot.

Microsoft Agent Framework
Open-source SDK for AI agents and multi-agent workflows across .NET, Python and Go.
Agent frameworksFreeAPIAutonomousClaudeVerified 14 days agoBest for .NET or Python teams already invested in Azure or Microsoft Foundry who want one supported agent SDK, an optional managed hosting path, and a documented migration off AutoGen or Semantic Kernel.
Native Model Context Protocol tool support ships as a named feature alongside Agent2Agent (A2A) protocol support: one of the framework's two headline 2026 interoperability standards.

Botsify
White-label platform for building prompt-based AI chat and voice agents that agencies resell under their own brand.
Agent platformsFrom $149/monthAPIAutonomousFree tierVerified 4 days agoBest for Small businesses and agencies that want a managed, prompt-based AI agent across chat channels, or want to resell one under their own brand, from an established, decade-old vendor.
MCP, document and web-search grounding ships as a named feature on both the Done-for-You and White Label plans, letting the agent reach tools and data beyond a static script.

Google Agent Development Kit (ADK)
Open-source framework for building, evaluating and deploying AI agents in Python, TypeScript, Go, Java or Kotlin.
Agent frameworksFreeAPIAutonomousClaudeVerified yesterdayBest for Teams that want Google's own official, actively-developed agent SDK, especially polyglot teams (Python/Go/Java/TypeScript/Kotlin) or anyone building multi-agent systems that need to interoperate across vendors via the A2A protocol.
Both directions: native Model Context Protocol tool support ships alongside Agent2Agent (A2A) protocol support, including a bundled MCP Toolbox for 30+ databases on the Go SDK.

Claude Agent SDK
Python and TypeScript library that runs Claude Code's agent loop and tools inside your own application.
Agent frameworksFrom $1/million input tokensAPIAutonomousClaudeVerified 14 days agoBest for Developers already building on Claude (or Claude Code) who want its exact agent loop, tools and context management as a callable library, and are comfortable being single-vendor on Anthropic in exchange for the tightest possible integration with Claude Code's own capabilities.
Both directions: external MCP servers connect the same way Claude Code does, and the `@tool` decorator mounts custom functions as an in-process MCP server with no separate subprocess to manage.

Cartesia
Real-time speech models and a managed runtime for production phone and web voice agents.
Voice agentsFree, then $5/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering teams that want an open-source voice-agent SDK with real LLM choice, built on speech models several rival platforms in this category already license as a component.
Publishes its own MCP server (cartesia-mcp) so clients like Cursor and Claude Desktop can call its TTS, STT and voice-management APIs directly: a server-side implementation rather than a client one.

Webhound
Pay-as-you-go web research agent: set a dollar budget, get cited reports, datasets and claim traces.
Research & data agentsFrom $1/run budgetAPIAutonomousBrowser useVerified 14 days agoBest for Developers and technical researchers who want an agent-triggered research tool, callable via MCP from inside Claude, Codex or Cursor, that returns either a cited Report or a structured, sourced Dataset, priced transparently by the dollar rather than an opaque credit system.
Ships a native MCP server, so an agent inside Claude, Codex or Cursor can trigger a research run and read its Report or Dataset output directly.

Agno
Python SDK, open-source AgentOS runtime and hosted control plane for building and operating agents.
Agent frameworksFree, then $150/monthAPIAutonomousClaudeVerified 14 days agoBest for Python developers who want an Apache 2.0 SDK with memory, knowledge, learning, guardrails and a Control Plane they run inside their own cloud account, and who are comfortable running Docker or a cloud deploy template themselves.
Native support in both directions: consumes external MCP servers as tools, and can expose an Agno agent as an MCP server itself.

Botpress
AI agent platform with a visual studio, a code-first TypeScript ADK and a helpdesk, priced per conversation.
Agent platformsFree, then $189/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering-led teams building a multi-channel AI support agent who want an open-source, self-hostable core with an optional managed cloud layer.
Bi-directional MCP support: consumes external MCP servers and exposes its own capabilities as one, alongside native WhatsApp/Slack/Teams/voice deployment.

OpenAI Realtime API
OpenAI's speech-to-speech API for low-latency voice agents over WebRTC, WebSocket or SIP.
Voice agentsFrom $10/1m audio input tokensAPIEnterpriseGPTVerified 14 days agoBest for Engineering teams building a voice agent from scratch who want to go directly to OpenAI's own speech-to-speech model (no orchestration platform, no per-minute markup) and are comfortable being single-vendor on OpenAI.
Connects to remote MCP servers for external tool access, shipped alongside native SIP telephony and image input at general availability.

Augment Code
Cosmos platform running fleets of coding agents across the SDLC, plus Auggie CLI and IDE extensions.
Coding agentsFrom $100/monthAPIAutonomousClaudeVerified 14 days agoBest for Engineering leaders at organizations who want AI agents running full SDLC loops end to end, with humans at the quality gates, rather than inline completion assistants.
MCP is named directly alongside its GitHub, GitLab, Slack, Linear and Jira triggers in its own already-published integrations field: a client integration, not a generic API mention.

Gemini Code Assist
Google's per-seat AI coding assistant and agent for IDEs, the terminal and GitHub pull requests.
Coding agentsFrom $22.80/monthAutonomousEnterpriseVerified 14 days agoBest for Teams standardized on VS Code or JetBrains who are already on Google Cloud
Agent Mode (Enterprise, preview) is documented as completing multi-step tasks using system tools and Model Context Protocol (MCP) servers: a client integration named directly in its own already-published feature description, not a generic API mention.

SalesTouch
Remote MCP server giving AI agents typed LinkedIn tools with queues, limits, approvals and activity logs.
Agent tools & infrastructureFrom $39/monthAPIClaudeGPTVerified 14 days agoBest for Sales and developer teams already running Claude or Codex through MCP who want a single endpoint for LinkedIn reads, outreach, and engagement without a browser extension.
A remote MCP server is the product's only interface: its own listing states it exposes LinkedIn actions to Claude, Codex, Hermes and OpenClaw through MCP instead of a dashboard or browser extension.

goose
Open-source local AI agent — desktop app, CLI and ACP server — running on the LLM provider you bring.
Coding agentsFreeAPIAutonomousClaudeVerified yesterdayBest for Devs who want an open source coding agent that reuses an existing Claude or ChatGPT plan
An MCP client and host: connects to 70+ Model Context Protocol extensions spanning databases, browsers, GitHub and Google Drive, and MCP Apps let an extension render interactive UI inside Goose Desktop instead of plain text.

TinyFish
Web infrastructure for AI agents: search, page fetch, cloud browsers and goal-driven web automation.
Research & data agentsFree, then $0.016/agent stepAPIAutonomousBrowser useVerified 14 days agoBest for Developers who need free structured web data plus paid browser automation on one key
Ships as an MCP server: listed on the MCP registry and built for MCP clients like Claude and Cursor to call directly into its Search, Fetch, Agent and Browser APIs, alongside community nodes for n8n and Dify.

MindStudio
No-code visual builder for AI agent workflows, published as web apps, APIs, webhooks or MCP servers.
Agent platformsFree, then $20/monthAPIAutonomousClaudeVerified 14 days agoAgents deploy as an MCP server, one of several publish targets alongside a REST API and Node.js package.

Sim
Open-source AI workspace for building, deploying and running agents across 1,000+ integrations.
Agent platformsFree, then $25/seat/monthAPIAutonomousClaudeVerified 14 days agoBest for Dev teams wanting an open-source, API-first workspace to build and deploy AI agents
MCP support is a named platform feature: workflows connect directly to Model Context Protocol tools and servers.

Undermind
AI literature research agent that searches, reads and cites the scientific record.
Research & data agentsFree, then $20/monthAutonomousClaudeEnterpriseVerified 14 days agoBest for Individual researchers, R&D teams and institutional scientists doing exploratory literature discovery or a novelty check who want citation-trail-following search beyond keyword matching.
Free tier at $0 is documented as 'Free at $0 with MCP,' naming MCP support directly on every pricing tier: the only entry here where the protocol is named on the pricing page itself rather than in the docs or integrations.
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