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
A2A Passport — one GTIN, one call, everything GSC knows, signed
Overview
Description from the maker (original English)
The hubs are the records; A2A-Passport.ai issues the passport.
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://mcp.a2a-passport.ai/mcpRun this in your terminal
claude mcp add --transport http a2a-passport https://mcp.a2a-passport.ai/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"a2a-passport": {
"url": "https://mcp.a2a-passport.ai/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": {
"a2a-passport": {
"type": "http",
"url": "https://mcp.a2a-passport.ai/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://mcp.a2a-passport.ai/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 greencore-solutions, 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 18329 servers in this category
- Published to the registry more recently than 59% of the other 18329 servers in this category
- Basic checks equal to or better than 100% of the other 18329 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 A2A Passport — one GTIN, one call, everything GSC knows, signed 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 (1.0.2) reached the registry 33 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, Excaliself
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
Excaliself
by maciekzygmunt
Find, read, create, edit, and organize Excalidraw drawings in your self-hosted Excaliself instance.
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.
A2A Record — one GTIN, one call, everything GSC knows, signed
The hubs are the records; A2A-Record.ai issues the record.
The hubs are the records; A2A-Record.ai issues the record. A record is a signed document for a product or a retail banner: where its record lives, where it is cleared, who lists it, where the money door is. Issued live from the GSC hubs, stamped every week. A2A Record is operated by GreenCore Solutions Corp.: one signed document per product (a Global Trade Item Number, GTIN) or retail banner, composed live from the GSC hubs — A2A Grocery, A2A Cosmetics, A2A Peptides, A2A Retailmedia and the compliance records — and signed (EdDSA). Three tools: get_record, list_records, verify_record. Every field is a hub's answer, word for word, with the door and the time it was read, or it is absent with a note: the record never infers. A product no hub holds gets no record. Reads are open; a verified, countersigned copy settles by x402. Artificial intelligence makes mistakes. A2A Record is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.
A2A Record is built and run by GreenCore Solutions Corp. (github.com/greencore-solutions). This is the public connect kit, MIT.
The door
streamable-HTTP, stateless, server name a2a-record, door version 1.0.2, 3 tools (read from the wire)
- Endpoint:
https://mcp.a2a-record.ai/mcp— any client that speaks streamable-HTTP:{ "url": "https://mcp.a2a-record.ai/mcp", "transport": "streamable-http" } - Agent Card (signed):
https://a2a-record.ai/.well-known/agent-card.json - Key:
https://a2a-record.ai/.well-known/jwks.json(EdDSA, key ida2apass-2026-10) - No registration and no token: every read is open.
The tools
get_record— The signed record of a product (a Global Trade Item Number, GTIN) or a retail banner (market/banner, e.g. FR/Carrefour): which hub holds its record, where it is cleared, its compliance records, who lists it, where the payment door is. Read live from the GSC hubs on every call; the first call issues version 1. subject = a GTIN (8 to 14 digits) or market/banner; kind = gtin or banner (optional).list_records— The records on the register: ids, kinds, markets, versions and issue times, newest first. No bodies. Filter by kind (gtin or banner), market, or issued since a time; paginated.verify_record— Check a record: is the signature valid, is the chain of versions intact, how old is the stamp, was any section not read. Verifies from the published key at /.well-known/jwks.json.
The document
One envelope for both kinds (a product by its GTIN, or a retail banner as market/banner): record_id, kind, subject, issued_at, version, previous_version_hash, issuer, signature, delta, and the body. Every field in the body is a hub's answer, word for word, with the door, the tool and the time it was read — or it is absent with a note. The record never infers.
- Current version:
https://a2a-record.ai/record/{id}.json - One version:
https://a2a-record.ai/record/{id}/v{n}.json - Record #1:
https://a2a-record.ai/record/gtin-03284230006408.json - The register (live counts):
https://a2a-record.ai/records/register.json
A product that no hub holds on its record gets no record.
Verify a record yourself
The signature is a detached JSON Web Signature (EdDSA) over the record without its signature field, keys sorted, compact JSON, UTF-8. examples/verify_record.py does it with the published key and nothing else.
The countersigned copy
Reading a record is free. A verified, countersigned copy settles at https://a2a-record.ai/api (x402, two accept entries). A record that is not on the register answers HTTP 403 and is not charged.
Examples
examples/generic_mcp_client.py— a stock client: lists the tools, reads record #1, verifies it on the door.examples/verify_record.py— fetches a record and the key over plain HTTP and verifies the signature offline.
Artificial intelligence makes mistakes. A2A Record is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.