Spec Driven Development
by formulahendry
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer★ 440MITUpdated 14 months ago
Install
Toolpin
Overview
Description from the maker (original English)
Check whether an MCP server answers, what its tools claim, and whether that claim has changed.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://toolpin.dev/mcpRun this in your terminal
claude mcp add --transport http toolpin https://toolpin.dev/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"toolpin": {
"url": "https://toolpin.dev/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"toolpin": {
"type": "http",
"url": "https://toolpin.dev/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://toolpin.dev/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified against the domain toolpin.dev (the registry checks domain ownership)
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 32451 servers in this category
- Published to the registry more recently than 46% of the other 32451 servers in this category
- Basic checks equal to or better than 100% of the other 32451 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Toolpin safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 2 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Recta
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
by desktop-commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud★ 211Updated yesterday
Install
Recta
by RectaBuild
Cheaper cross-chain stablecoin routes for AI agents; 5 % of the verified saving, nothing if none.
Runs in the cloudUpdated today
Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Toolpin MCP server
An MCP server that answers questions about other MCP servers: whether one answered when we last probed it, what its tools claimed to do, and whether that claim has changed since.
Useful when an agent is choosing which server to depend on, and useful in the moment something breaks and you want to know whether the tools moved under you.
`https://toolpin.dev/mcp` Streamable HTTP, stateless, no sign-up.
{"mcpServers": { "toolpin": { "url": "https://toolpin.dev/mcp" } } }
Tools
| Tool | What it answers |
|---|---|
search_servers | Find MCP servers in the public registry by name or title. |
get_server | Everything Toolpin has observed about one MCP server: reachability of each remote endpoint and when each was last checked and last verified, repository activity, the current tool-definition hash, and how many changes it has recorded in the last 90 days. |
get_server_tools | The tool definitions one MCP server advertised when Toolpin last read them, each with a SHA-256 hash of the fields the MCP specification defines. |
get_server_changes | Changes Toolpin recorded for one MCP server: tool definitions changing, and endpoints going down or coming back. |
get_spec_status | The current MCP specification revision, which of its proposals Toolpin checks for, and how much of the catalog has migrated. |
watch_server | Start monitoring an MCP server on the caller's Toolpin account, so they are emailed when it changes or stops answering. |
Full parameters and response shapes: https://toolpin.dev/api, or the machine-readable schema at https://toolpin.dev/openapi.json.
Limits
No key needed to read. Add one as an Authorization: Bearer header to raise the limit, and to use watch_server, which acts on your account.
| Caller | Distinct servers per day |
|---|---|
| Anonymous | 25 |
| Signed in, free | 200 |
| Any paid plan | Unmetered |
The limit counts distinct servers, not requests. Asking about the same servers all day costs one against the limit each, however often you ask, so watching your own dependencies never runs out. Never put a key in a URL.
What it will not tell you
No score, no grade, no rating, no safety judgment. Tool descriptions and annotations are reproduced exactly as the server published them: they are claims by that server's author, not anything Toolpin verified. A tool whose annotations say it only reads may do anything at all.
What Toolpin can tell you is whether the claim changed, because it hashes the fields the MCP specification defines and compares them daily. That is the whole product.
Methodology: https://toolpin.dev/methodology
This repository
Documentation and the published registry manifest. The service itself is closed source. Tool-definition changes are recorded in CHANGELOG.md, which is the same thing Toolpin watches for on everyone else.
Questions: