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
Agoranome seller tools
Overview
Description from the maker (original English)
Get your x402 API found and bought: lint, Bazaar rank, buyer panel, demand gaps. Paid in USDC.
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://api.agoranome.com/mcpRun this in your terminal
claude mcp add --transport http agoranome https://api.agoranome.com/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"agoranome": {
"url": "https://api.agoranome.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": {
"agoranome": {
"type": "http",
"url": "https://api.agoranome.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://api.agoranome.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 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Agoranome, 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 32509 servers in this category
- Published to the registry more recently than 74% of the other 32509 servers in this category
- Basic checks equal to or better than 100% of the other 32509 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 Agoranome seller tools 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 (1.0.3) reached the registry 12 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, Fomu MCP
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
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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.
The Fair Offer Standard
Seven open rules for selling to AI agents honestly, and a machine-readable way to prove them inside the x402 payment handshake. Version 0.2 (draft).
Human-readable page: https://agoranome.com/standard · JSON: standard.json · Schema: schema/fair-offer-0.2.schema.json
The seven rules
| ID | Rule | What it means | How to check |
|---|---|---|---|
| FO-1 | Price before payment | An unpaid call returns an x402 offer (HTTP 402) that states the price, asset, network and pay-to address. Nothing is charged before the buyer has signed that exact offer. | check |
| FO-2 | Failure is free | A call that fails, times out or returns no result is not settled. The buyer is told so. | self-declared |
| FO-3 | Receipts are signed | Every paid result carries a receipt signed by the seller's key: what was bought, for how much, and when. | check |
| FO-4 | Sample before you buy | A free sample shows what the paid route returns, and a third party can attest that the sample and the paid offer come from the same host. | check |
| FO-5 | Honest listing | The listing's description, input schema and output example match what the route really returns. Edits made to win buyers must stay true. | check |
| FO-6 | Data, never instructions | Responses carry data for the buying agent to use, never instructions aimed at it. A buyer can treat any instruction in a response as an attack. | self-declared |
| FO-7 | Promises are verifiable | Any claim about where revenue goes (a pledge, a split, a donation) comes with a public ledger that a buyer can check per receipt, with on-chain proof of what was given. | check |
Declaring it (0.2)
A seller's HTTP 402 carries an x402 extension, extensions["fair-offer"], whose info states which rules the offer keeps and where a buyer can check each one:
{"version": "0.2", "standard": "https://agoranome.com/standard", "settlement": { "failed_calls": "not_charged", "enforced_by": "seller" }, "receipts": { "signed": true, "verify": "https://api.example.com/receipts/verify" }, "sample": { "url": "https://api.example.com/v1/search/sample" }, "listing_price_matches_offer": true, "data_not_instructions": true, "pledge": { "share": 0.15, "basis": "settled_revenue", "ledger": "https://api.example.com/impact/ledger" } }
- Keep it stable. Keep the info identical in the unpaid 402 and on the paid retry: x402 clients echo it, and servers reject a payment whose echo drops or changes a field. Put live numbers behind a URL, never in the block.
- URLs. Each URL is https, or a path relative to the resource URL.
- Put the fair-offer block in your 402's extensions (see handshake), and link this URL from your llms.txt or agent manifest as "conforms_to": {"fair_offer": "0.2"}.
Asking for proof: Accept-Proof
A buyer says what proof it needs before it pays, in an Accept-Proof request header (or an accept_proof field in the block it echoes in the payment payload):
Accept-Proof: sample=attested; price<=listing; payers_30d>=20| Requirement | Met when |
|---|---|
sample=any | the offer declares a free sample on its own host |
sample=attested | the sample has an attestation on record |
settlement=seller | failed calls are not charged (the seller's promise) |
settlement=rail | the payment is captured only on success (auth-capture) |
price<=listing | the live price was checked against the Bazaar listing |
receipts=signed | paid results carry signed receipts |
pledge=ledger | a pledge with a public ledger that answers |
instructions=none | declared data-not-instructions, and no instruction-like text found |
payers_30d>=N | at least N distinct payers in 30 days (Bazaar's count) |
calls_30d>=N | at least N paid calls in 30 days (Bazaar's count) |
deliveries_30d>=N | at least N deliveries in 30 days: receipts confirmed on chain, paid by buyers (evidence commons) |
Checking an offer
- Validate a block:
POST https://api.agoranome.com/v1/fair-offer/validate(free) - Check a live offer's claims from outside:
GET https://api.agoranome.com/v1/fair-offer/check?url=...(free)
Implementations
- Agoranome (https://agoranome.com): every paid x402 route at
api.agoranome.comsends the block, and the hosted MCP server (https://api.agoranome.com/mcp, listed in the official MCP Registry) offers acheck_offertool. That service's source isn't public; this repository holds the open standard. - Using it in your 402s? Open an issue with your host and it can be listed here.
Agent skill for buyers
skills/x402-pay-safely/SKILL.md is an Agent Skill for any agent with a wallet. It tells the agent when to check an x402 seller before paying it and how to prove a payment after, using Agoranome's paid Buyer check ($0.01 a call, up to 20 offers at once) and the free checks above. Skill installers that read a GitHub repository can install it from here. The copy served at https://api.agoranome.com/skills/x402-pay-safely/SKILL.md is always current.
Proposing changes
Open an issue or a pull request. Changes to the block's fields go into a new version, so a buyer's policy written for 0.2 keeps working. Corrections, data questions and replication requests can also go to research@agoranome.com.
Versions
- 0.1: The seven rules, declared in an agent manifest or llms.txt.
- 0.2: The same seven rules, plus the machine-readable fair-offer block in the x402 402 and the buyer's Accept-Proof header.
License
The standard text, schema, examples and the buyer skill are licensed under CC BY 4.0. Implement it freely; credit "The Fair Offer Standard, Agoranome".