Test an existing MCP privately
Connect → inspect tools → approve one test → review the saved report.
Private evaluation guideDeveloper tools + a community to discover your work
Build and publish your MCP. Discover what’s next.
Build, test, and deploy with Dev Studio. Already have an MCP? Connect it privately for analytics and guided evaluations—no publishing required. Turn APIs, documents, and skills into MCP experiences, or discover tools for your next project.
From your first tool to your next user: development tools, publishing, and discovery in one place. Your platform API key connects supported marketplace subscriptions—not arbitrary crawled servers. An agent can search, register, subscribe, and pick up that key from the For agents page.
New · MCP analytics and evaluations
Bring your MCP. Make one successful tool call.
Connect an existing server privately, inspect its tools for free, then approve a test and read the results. No marketplace listing or editor project required. An account is required to run checks.
Free basic checks. One-time 7-day trial: 10,000 evaluation calls. MCP Channel Pro includes 50,000 evaluations per billing month for $25/month, alongside Dev Studio. AI uses one shared daily pool across both products: 10,000 tokens on Free or 200,000 on Pro, resetting at midnight UTC.
Understand your gateway calls
Make a call through MCP Channel → filter by key or tool → inspect failures and latency. Basic reports are free.
Free observability guideImprove a published MCP
Open your listing → compare call quality → investigate a failure or schema issue.
Publisher analytics guidePrivate evaluations are tests you explicitly run, not passive monitoring. Calls may change data or incur provider charges. AI grading is optional and advisory.
Explore the marketplace analytics demo
This interactive panel uses sample marketplace traffic, not your private evaluation results. Basic reports cover calls through MCP Channel. Compare servers and Call statistics in the editor are included too.
- 01
Call quality
Success, the slow tail, callers, and sessions, against the window before.
- 02
Where the time went
Time inside MCP Channel, and time waiting on your server.
- 03
Server doctor
What looks unhealthy, and a description you can apply. The tool name stays the same.
- 04
Failed calls
Explain one row against the tool schema. The sample stays off the list.
- 05
Ask
Ask why success dropped. The answer cites recorded rows. Basic answers are free; AI assistance uses Advanced Analytics.
- 06
Timeline
Releases, schema changes, spikes, and recoveries in one list.
mcpchannel.ai/dashboard/listings/weather
DEMOPrivate evaluation · sample
forecast for Seoul
One approved call on a server that was never listed. Switch the result to see a pass, a returned call that still needs a check, or a recorded failure.
Evaluation result
Successful tool call
23 ms. One synthetic result, not a guarantee of future correctness.
Sunny
Execution
The server returned a tool result.
Useful output
forecast returned text for Seoul.
Expected text
The result includes the text you asked to see.
AI assessment advisory
A redacted sample of the arguments and output. Not proof the next call will pass.
Task completion
passedThe reply is a forecast for the city that was sent.
Argument correctness
passedSeoul is the city in the answer, not a generic forecast.
Faithfulness
passedThe reply stays inside the tool result. It does not add a temperature the server did not return.
Weather · listing analytics
How this server ran
Calls that already passed through the proxy. Success, the slow tail, and where the time was spent.
Unhealthy
Success
62.5%
tools/call
Slow tail
1.2s
95th percentile
Callers
4
Distinct API keys
Failures
9
Timed out on forecast
Where the time went
95th percentile. Gateway time is inside MCP Channel. Upstream time is the listing server.
80 ms + 1.1 s
Gateway 80 ms
Upstream 1.1 s
Methods
| Method | Calls | Errors |
|---|---|---|
| tools/call | 24 | 37.5% |
| tools/list | 11 | 0% |
| initialize | 4 | 0% |
forecast timed out. The success rate for this window is on the cards above.
forecast
Call forecast only for a future city forecast. It reads city.
Demo data. A private evaluation is a call you approve. The traffic below is calls that passed through the MCP Channel proxy. Neither one certifies the next call.
Dev Studio + Advanced Analytics
MCP Channel Pro
One subscription to build, host, and evaluate your MCP tools. Already have a server? Evaluate it privately without a marketplace listing or editor project.
$25/month USD
Existing Pro subscribers are included.
Build and host with Dev Studio
- Unlimited projects and production hosting
- 100 calls per preview
- 200,000 AI tokens per day, shared with analytics
- 5,000 hosted calls per month, then $0.005/call
Evaluate with Advanced Analytics
- 50,000 evaluation calls per billing month
- AI grading uses the same Dev Studio daily token pool
- Private MCP connections, explicit test approval, and saved reports
- Separate evaluation-call limits, hard caps, no analytics overages
Start with a free 7-day analytics trial: 10,000 evaluation calls, once per account. On Free, AI uses the same 10,000 tokens/day as Dev Studio, not an extra allowance. Shared tokens reset at midnight UTC.
An account is required; publishing is not. Basic reports stay free. Evaluations are tests you run, not passive monitoring of existing traffic. Marketplace subscriptions are separate.
Develop · Test · Publish · Get discovered
Bring your work to MCP. Start your way.
Go from an idea to tools people can use. Develop in Dev Studio, connect a REST API, or turn skills and documents into MCP resources. Test and review your work, then publish. Our directory helps people find tools and creators reach users.
From our editor
Your code → custom MCP tools
Start from a template in Dev Studio. Edit code, configure tools, test calls, and deploy before reviewing and publishing your listing.
Open Dev StudioFrom a REST API
Your API → MCP tools
Bring an OpenAPI or Swagger spec. Turn your existing API operations into tools an MCP client can call.
Connect a REST APIFrom skills
Your know-how → reusable instructions
Publish a Markdown skill. Eligible public/free skills can be selected and served through our Skills over MCP endpoint—not executed as code.
Publish a skillFrom documents
Your content → searchable knowledge
Upload documents and create an MCP knowledge source. Let AI clients search and retrieve relevant content through the platform.
Upload documentsFor creators & providers
Publish it. Put a business behind it.
Offer your MCP for free or choose a paid plan. Platform listings bring discovery, subscriber access, usage tracking, analytics, and billing together.
- Free access
- Monthly subscriptions
- Usage-based billing
Paid listings require billing setup and Stripe Connect for payouts. Skills over MCP currently serves eligible public/free skill content only.
Already built an MCP?
Bring your link. Reach the community.
Add your MCP endpoint or import a GitHub source in the listing flow. We attempt tool discovery; you review the result and publish when it’s ready.
- Add your source and connection details
- Discover tools and review your draft
- Publish for users to discover and subscribe
Sign in and submit a source you’re authorized to publish. A repository link may need hosting or connection setup before its tools can be used.
One platform key. Clear access boundaries. Use your platform API key for supported marketplace subscriptions and the separate Skills over MCP endpoint. Crawled directory links alone do not grant platform-key access; provider authentication may still be required.
Set up Skills over MCPFor agents
Search, subscribe, then use one key.
An agent can shop the catalog without an account, confirm an email, turn on a free server or open Stripe Checkout, and write the gateway config into the client. That key calls every subscribed server, including the ones we host.
search
Find a server, with its rating.
register
Create an account from an email. No password.
subscribe
Free turns on. Paid opens Checkout.
setup
One gateway key for every subscription.
discuss
A thread on the listing, separate from ratings.
Skills over MCP
One connection. Your selected skills.
Select up to 20 public/free skill Markdown docs and load them in your AI client through a platform MCP endpoint, using your platform API key.
Your AI client follows the instructions. This endpoint serves docs, not scripts or model calls, and does not grant access to crawled MCP servers.
Set up Skills over MCPSign in to configure your selection.
Included, with clear limits
- 10,000 tool-call attempts
- Per account per calendar month (UTC).
- 60 requests per minute
- Per account, shared across keys. This resets every minute. The monthly allowance is the number above. A lower per-key limit still applies.
No document credits. No overage charges.
Interactive Demo
See it in action
Browse, call a tool, build in the editor, then read a private evaluation and the traffic that passed through the proxy. Sample data. No sign-up.
mcpchannel.ai/listings
DEMOReady to try the real thing?
Hot and news
Show or hide
Five servers from recent stories, and five whose GitHub stars jumped since the last crawl.
1
rea
+14,637Reverse engineer anything with agents, from app behavior down to native binaries.
★ 412,749 stars
2345
openGym
+9,787Open-source gym & body-weight tracker, now in the App Store (iPhone + Apple Watch) and as an Android APK. Plan routines, log workouts, see which muscles are trained, import from Strong/Hevy/FitNotes. Self-host it or use it on the phone alone.
★ 17,891 stars
security-audit-skill
+3,871A coding-agent skill for multi-phase security audits with independently verified, machine-readable findings
★ 66,126 stars
Scrapling
+3,247🕷️ The BEST Web Scraping framework that handles everything from a single request to a full-scale crawl! Don't be shy, join here: https://discord.gg/EMgGbDceNQ and follow here for daily tips and tricks: https://x.com/Scrapling_dev
★ 95,117 stars
ai-job-search
+3,156The job search that runs on your machine. AI job application framework built on Claude Code: evaluate postings, tailor CVs, write cover letters, prep interviews. Fork it and own it.
★ 53,815 stars
REST → MCP
Already have a REST API?
Turn your OpenAPI spec into tools for Claude, Cursor and other MCP clients. Preview the schemas, configure authentication, and publish when you’re ready. Your API stays yours.
Your API. A new interface.
Illustrative integrationMotion reduced
01 / Define
Your existing API
A curated OpenAPI specification.
openapi.json
- GET
/users - GET
/users/{id} - GET
/orders
Keep your endpoints and business logic.
02 / Configure
MCP Channel
The gateway between API and agent.
Tool definitions
Names and input schemas from your spec.
Access & authentication
Platform-key access and configured provider auth.
Request translation
Tool arguments become HTTP requests.
Review configuration before publishing.
03 / Connect
Tools for your client
Claude, Cursor & compatible MCP clients.
list_userslimit?: number
get_userid: string
list_ordersstatus?: string
Published tools appear as slug/toolName.
Animated above: spec → tool definitions
At call time: MCP client → gateway → your API → result
After publication, users enable access and create their platform key on the website. The spec defines the tools; provider credentials still need configuration.
One operation, one tool
Every path × method becomes a named MCP tool. operationId, summary, and parameter schemas carry through.
Authentication, configured once
Review your API’s auth requirements and configure supported provider credentials. The gateway attaches them when translating tool calls.
$ref & requestBody resolved
Nested schemas are dereferenced. JSON and form-urlencoded bodies just work. No manual rewriting.
Free to start
Have documents, not an API?
Upload them. We register an MCP on the marketplace. Others subscribe and ask through the same gateway — one key, no extra URL. Free to start.
You upload
API docs, runbooks, a contract. We index the text.
We list it
A published MCP with ask and list_documents. It shows on Browse.
They call us
Subscribe, paste the gateway into Cursor, ask slug/ask. That is the whole path.
How others call it
- 1. Subscribe on
/listings/your-docs - 2. Create one
mcp_…key — same key as every other listing - 3. Point Cursor at this gateway. Tools:
your-docs/ask,your-docs/list_documents
{
"mcpServers": {
"mcp-server": {
"url": "https://www.mcpchannel.ai/api/mcp",
"headers": {
"X-MCP-Market-Key": "mcp_YOUR_KEY_HERE"
}
}
}
}Free to start
Build your MCP in the browser
Write TypeScript or Python. Test instantly. Deploy with one click. Your first project is free — no credit card required.
🛠️
Utility Tools
Time, UUID, word count, random numbers
🟦 TypeScript·Start free →
📊Data & Transform
JSON formatter, CSV parser, base64, hashing
🐍 Python·Start free →
🌐Web & API
HTTP fetch, URL parser, HTML text extractor
🟦 TypeScript·Start free →
📝Text Processing
Slugify, case convert, extract emails/URLs
🐍 Python·Start free →
1
Pick a template
Choose TypeScript or Python. Start from a template or blank.
2
Write code
Monaco editor with syntax highlighting, autocomplete, and AI assist.
3
Test for free
Run any tool in an isolated sandbox. No charge.
4
Deploy
Test deploy (free, 1hr) or production deploy (Pro plan).
Free — 1 project, test deployMCP Channel Pro $25/mo — unlimited projects, production hosting + Advanced Analytics
Why mcpchannel.ai
Find MCPs, publish yours, and ship one with our tools. One gateway, one key.
1 key
All subscribed MCPs
Free & Pro
Per-MCP pricing
Secure proxy
Metered & rate-limited
Publish & earn
Stripe Connect payouts
MCPs & Agents
Subscribe to MCP tools and run agents from one place. One API key, one gateway—use in Cursor, Claude, or any MCP client.
REST → MCP
Have a REST API? Paste your OpenAPI spec—we turn it into MCP tools. No backend changes. Your API works as another MCP.
Documents → MCP
Have files, not an API? Upload them. We register a listing; subscribers ask through the gateway with the same key.
Dev Studio
No server yet? Write TypeScript or Python in the browser, test in a sandbox, and publish. First project is free.
Flexible payments
Free or Pro per listing. We take 5% of subscription revenue (popular API marketplaces take 20–25%). Flat fee, metered usage, or both.
Easy subscription & billing
Manage all subscriptions in one dashboard. Create API keys, see usage, and handle billing with Stripe—customer portal and payouts built in.
Analyze your MCP
Sign in for free basic observability: success, slow calls, rule-based explanations, and a timeline. Advanced Analytics has a 7-day trial and is included in MCP Channel Pro, even without a marketplace listing or editor project.
Playground
Try tools and agents in the browser. Natural language becomes tool calls. Use a test key before you subscribe—no commitment.
LLM evaluation score
We score listings with our LLM so you see quality at a glance. Know what you're getting before you subscribe.
More
Test key try-it
Try before you subscribe
MCP config + guides
Copy config for Cursor, Claude
OAuth & stdio
Connect OAuth; we run stdio MCPs
Reviews & uptime
Ratings and health checks
Analyze
Listing quality, doctor, Ask
Convert to MCP
Download spec, self-host if you want
For developers
Discover MCP servers, AI skills, and CLI tools. Subscribe and call them through a single gateway and one API key.
Discover & search
Browse MCPs by category. See tools, README (from GitHub or uploaded), docs and video links, pricing, and reviews before you subscribe.
One API key
Subscribe to as many tools as you want. A single key unlocks all of them in Cursor, Claude, or any MCP client. No per-tool config.
Secure gateway
Every call goes through our gateway. We validate your key, check quotas and rate limits, proxy to the provider, and meter usage.
Usage & billing
Dashboard shows usage this month, quotas, and recent tool calls. Free and Pro plans per MCP. Stripe subscriptions and customer portal.
Playground & MCP mode
Try tools in the browser. Open MCP mode for chat: natural language becomes tool calls. App selector picks which key to use; copy MCP config and install guides for Cursor, Claude, and more.
REST APIs as MCPs
Listings can be backed by a REST API: paste an OpenAPI spec and we turn it into MCP tools. No backend changes. Use a provider test key to try before you subscribe.
Reviews & uptime
See ratings and reviews from other users. We run health checks and show uptime %. Verified badge for vetted MCPs.
Already have paying customers?
Keep your plans. Add an agent.
Your customers already pay you. List your API here and they reach it from Claude, Cursor or any MCP client — on their own key, on their existing plan, billed by you exactly as they are today.
You ask for one thing
Add a field to your listing: “Your API key”. Your subscriber fills it in once, on their dashboard.
Never as a tool argument — so it never lands in an agent’s transcript, and you never see anyone else’s.
You get it on every call
X-MCP-Market-Config:
{"api_key": "ak_live_..."}Read one header. That is the whole integration — no accounts to create, no plan logic, no webhooks. Your rate limits and tiers apply unchanged, because it is their key.
Selling to people who don’t have an account yet? List one plan per tier and we handle the subscription — we tell you who signed up, and when they leave.
Publish your MCP — we give you the tools
Already have a server? List it. If not, use Dev Studio, REST → MCP, or documents. We handle discovery, keys, metering, and billing. Free or Pro — payouts via Stripe Connect.
- ✓Dev Studio: write TypeScript or Python in the browser, test in a sandbox, deploy. First project is free.
- ✓REST → MCP: paste an OpenAPI spec (or URL); we generate tools and proxy requests—no backend changes. Provide a test key so consumers can try in the Playground.
- ✓Documents → MCP: upload files; we register a listing. Subscribers ask through the gateway with the same key — no extra URL.
- ✓HTTP or stdio: provide an MCP URL or paste stdio config—we run stdio MCPs for you.
- ✓OAuth: require consumers to connect with their Client ID/Secret; we send their token when proxying.
- ✓GitHub repo README or upload your own; add docs and video links.
- ✓Tool validation and optional schema checks before proxying.
- ✓Analyze: sign in for free basic reports. AI assistance and active evaluations use the analytics trial or included MCP Channel Pro allowance. Private servers do not need a marketplace listing.
- ✓Dashboard: usage per MCP, recent calls, payout history.
Provider dashboard
ListingsCreate, edit, draft/publish
UsagePer-MCP and per-listing
AnalyzeQuality, doctor, Ask
PayoutsStripe Connect, revenue share
IntrospectionTools, prompts, resources
How it works
Three steps to start using MCP servers, skills, and CLI tools.
1
Discover tools
Browse MCP servers, AI skills, and CLI tools. Read docs, check reviews, and subscribe (free or Pro) with one click.
2
One API key
Create an API key in your dashboard. One key works for every MCP you’re subscribed to.
3
Use in your IDE
Add our gateway URL and your key to Cursor or any MCP-compatible client. All tools appear as slug/toolName.
Explore
MCP servers, agents, clients, skills, and CLI tools — all in one place.
Advertise with Us
Reach tens of thousands of AI developers and MCP enthusiasts in our growing community.
Get a Sponsored badge on any listing type
- •MCP Servers, Agents, REST APIs
- •Skills and CLI Tools
- •MCP Clients
Ready to monetize your MCP?
List your MCP, set your price, and start earning. Consumers get 20678+ tools through one key.