Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Paid x402 help: debug 402 errors, review MCP manifests, rewrite Bazaar listings. USDC on Base.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
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Works in Claude on the web, desktop and mobile:
https://x402orcle.vercel.app/mcpRun this in your terminal
claude mcp add --transport http x402orcle https://x402orcle.vercel.app/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"x402orcle": {
"url": "https://x402orcle.vercel.app/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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"x402orcle": {
"type": "http",
"url": "https://x402orcle.vercel.app/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:
https://x402orcle.vercel.app/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.
We have not read this server’s tool list yet; we check endpoints in rotation.
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
The registry name was verified with the GitHub account kwizzlesurp10-ctrl, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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.
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 21 days ago.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, Signoff
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Five gates that make an agent's 'done' provable: run them, read the verdict, audit the record.
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.
x402orcle)402 is the answer. The Oracle is how you ask.
Paid MCP + HTTP 402 wisdom market for x402 / MCP / A2A / Bazaar. Seller-only public host. Base USDC (eip155:8453).
| Surface | Path |
|---|---|
| Landing | / |
| Catalog | /.well-known/x402 |
| MCP | /mcp streamable HTTP JSON-RPC + /.well-known/mcp.json |
| A2A | /.well-known/agent-card.json |
| Fund | /.well-known/funding.json |
| LLMs | /llms.txt |
| Agents | /agents.txt |
| OpenAPI | /openapi.json (x-payment-info) |
Free: oracle_health, oracle_pricing Paid: oracle_ask $0.10 · oracle_diagnose_402 $0.50 · oracle_review_mcp $3 · oracle_bazaar_rewrite $1.50 · complete_oracle_task $10 (clamped to MAX_PRICE_USD=25)
Paid replies are a wisdom envelope: verdict, wisdom, implementation_prompt, risk, citations, receipt.
X402_PAY_TO=0x… # 42-char address only
X402_NETWORK=eip155:8453 X402_FACILITATOR_URL=https://api.cdp.coinbase.com/platform/v2/x402 CDP_API_KEY_ID= # Secret API key id (JWT). Not a wallet key. CDP_API_KEY_SECRET= MAX_PRICE_USD=25 DEMO_MODE=true # local DemoFacilitator
Do not set EVM_PRIVATE_KEY on Vercel/Render. Buyer keys stay on the operator laptop.
x402.org/facilitator is not the default production path for mainnet EVM.
cp .env.example .env
pnpm install pnpm --filter @x402orcle/oracle-brain test pnpm --filter @x402orcle/mcp test pnpm --filter @x402orcle/mcp dev # :4021 pnpm --filter @x402orcle/web dev # :3000 landing
Unpaid consult → HTTP 402 + PAYMENT-REQUIRED (base64 JSON, extensions.bazaar). Demo: POST /v1/demo/mint-payment then retry with PAYMENT-SIGNATURE.
Cataloging is settlement-triggered. Validate first (no pay):
curl -sS -X POST https://api.cdp.coinbase.com/platform/v2/x402/validate \
-H 'content-type: application/json' \ -d '{"resource":"https://YOUR_HOST/api/consult/oracle_ask","method":"POST"}'
Then one mainnet seed settle from a local burner. No settlement = no rank.
apps/web Next.js App Router landing + discovery + 402
apps/mcp streamable-HTTP paid MCP + HTTP twins packages/oracle-brain
FOSS: @x402/mcp createPaymentWrapper + x402ResourceServer, @x402/extensions/bazaar declareDiscoveryExtension (see apps/mcp/src/x402-foss.ts).
Payment for delivered consult artifacts or a voluntary tip. Not a token, not equity, not a raise.