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
stampthisfile
Overview
Description from the maker (original English)
Timestamp files in Bitcoin (OpenTimestamps): send a hash, pay per hash with x402, get a proof.
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://stampthisfile.com/mcpRun this in your terminal
claude mcp add --transport http stampthisfile https://stampthisfile.com/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"stampthisfile": {
"url": "https://stampthisfile.com/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": {
"stampthisfile": {
"type": "http",
"url": "https://stampthisfile.com/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://stampthisfile.com/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 7, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account stampthisfile, which owns the repo
- … 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 32742 servers in this category
- Published to the registry more recently than 68% of the other 32742 servers in this category
- Basic checks equal to or better than 100% of the other 32742 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 stampthisfile 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 17 days 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, Asset Notation
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 2 days ago
Install
Asset Notation
by assetnotation
Read and maintain an Asset Notation file on disk: net worth, holdings, valuations, CSV import.
Runs on your computerUpdated 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.
stampthisfile MCP server
A hosted MCP server that lets AI agents timestamp files in Bitcoin with stampthisfile: send the SHA-256 hash of a file (never the file), pay per hash in USDC with x402, and get a standard OpenTimestamps .ots proof that anyone can verify without us. No account or API key.
- Endpoint:
https://stampthisfile.com/mcp(Streamable HTTP, stateless) - Auth: none. Stamping is paid per call with x402; everything else is free.
There is nothing to install or run: this repository describes the hosted server. The server itself is not open source.
Connect
Claude Code:
claude mcp add --transport http stampthisfile https://stampthisfile.com/mcpCursor, VS Code and other clients (.mcp.json style):
{"mcpServers": { "stampthisfile": { "type": "http", "url": "https://stampthisfile.com/mcp" } } }
Tools
| Tool | What it does |
|---|---|
stamp_hashes | Timestamp 1-100 SHA-256 hashes in Bitcoin. Paid per hash with x402; returns a pending .ots proof per hash and a signed receipt |
get_stamp | A stamp's status: pending, complete (with the Bitcoin block and time) or failed |
get_proof | The current .ots proof, base64. Fetch it again once complete to get the Bitcoin attestation |
verify_proof | Check any OpenTimestamps proof against a file's SHA-256 |
A proof is pending at first and completes once Bitcoin confirms it, usually within 1-6 hours. A complete proof shows the file existed no later than the time of its Bitcoin block. It is not a signature and does not show who made the file: read stampthisfile.com/evidence.md before stamping something meant as evidence.
Pricing
Stamping costs a fixed price per hash, in USDC on Base, paid with x402 using the MCP transport: without a payment, stamp_hashes returns a tool error whose structuredContent is the x402 PaymentRequired. Retry with the signed PaymentPayload in _meta["x402/payment"], or in the payment argument if your client cannot set _meta. The settlement comes back in _meta["x402/payment-response"]. Invalid input is never charged. Reading, downloading and verifying proofs are free.
More
- stampthisfile.com/llms.txt: the API for agents
- stampthisfile.com/openapi.json: REST API
- stampthisfile/skills: the same, as agent skills (
npx skills add stampthisfile/skills)
License
MIT, for the contents of this repository.