Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Verify XRP payments on Flare FDC. Agents subscribe or pay per attestation via x402 on XRPL.
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.
You need
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:
https://xrp-link.com/mcpRun this in your terminal
claude mcp add --transport http xrplink https://xrp-link.com/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"xrplink": {
"url": "https://xrp-link.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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"xrplink": {
"type": "http",
"url": "https://xrp-link.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:
https://xrp-link.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.
Tool names and descriptions exactly as the server reported them on Nov 7, 2026. The maker wrote them, not us; we show them as plain text.
verify_xrp_paymentSubmit a native XRP Payment hash for FDC attestation on Flare. Only Payments from the last 14 days can be proven. Subscription API keys inside quota are not charged extra (Paid: 20 mainnet attestations per billing period; Pro: 100). Failed prepares do not consume quota. Without a
get_attestation_statusGet the current status of an attestation by its UUID. Unauthenticated callers receive the public receipt subset. The owning API key receives the full proof.
lookup_attestation_by_txLook up an attestation by its original XRP transaction hash. Unauthenticated callers receive the public receipt subset. The owning API key receives the full proof.
get_server_infoGet XRPLink server information, network details, contract addresses, and white-label branding.
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 joverman, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 690 ms (HTTP 200)
No sign-in needed
Read 4 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 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 (0.3.0) reached the registry 12 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, NexusWindows
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.
Windows computer use in the background: desktop apps driven without your mouse or keyboard.
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.
Generate tamper-proof, independently verifiable receipts for any XRP payment. XRPLink attests XRP transactions through Flare's FDC protocol and provides a shareable receipt with a cryptographic Merkle proof. Built for compliance, audit, and merchant reconciliation.
Live at [https://xrp-link.com](https://xrp-link.com)
# Visit the hosted app
open https://xrp-link.com
git clone cd xrplink npm install cp .env.example .env
npm run start:rest
Live on Flare mainnet. End-to-end pipeline validated: XRP tx → verifier API → FdcHub → DA Layer proof → on-chain verification.
| Milestone | Status |
|---|---|
| Mainnet deployment | ✅ Live (PaymentVerifierMainnet at 0xA10034...e14b) |
| End-to-end pipeline validated | ✅ Complete — XRP tx attested on mainnet |
| User auth (signup/login) | ✅ Complete |
| Receipt pages | ✅ Complete — shareable at /receipt/:txHash |
| Dashboard | ✅ Complete — API key, usage stats, receipt history |
| REST API | ✅ Complete — verify, status, webhooks, health |
| API key auth + rate limiting | ✅ Complete |
| Subscription tiers | ✅ Complete — free/paid/pro |
| MCP Server | ✅ Complete — 5 tools, 4 prompts, 5 resources |
| Hardhat test suite | ✅ Complete — 8 tests passing |
| Open source | ✅ BUSL-1.1 (source-available) |
| Command | What starts |
|---|---|
npm start | MCP server (stdio) + REST API |
npm run start:mcp | MCP server only |
npm run start:rest | REST API only |
| Dep | Version | Purpose |
|---|---|---|
hardhat | ^3.9.1 | Solidity dev environment |
ethers | 5.8.0 | EVM interaction |
tsx | ^4.23.0 | TypeScript script runner |
dotenv | ^17.4.2 | .env config |
express | ^5.2.1 | HTTP API server |
@flarenetwork/flare-periphery-contracts | ^0.1.52 | FDC protocol interfaces |
@modelcontextprotocol/sdk | ^1.29.0 | MCP server framework |
| Method | Path | Auth | Description |
|---|---|---|---|
POST | /auth/signup | Public | Create account + free API key |
POST | /auth/login | Public | Log in and get a session token |
GET | /me | Bearer token | Current user info and API keys |
GET | /health | Public | Liveness ({"status":"ok"}) |
GET | /dashboard | Public | HTML user dashboard |
GET | /receipt/:txHash | Public | View a receipt (HTML) |
POST | /api/v1/verify/xrp-payment | API key | Attest an XRP tx |
GET | /api/v1/status/:id | API key | Check attestation by UUID |
GET | /api/v1/status-by-tx/:txHash | API key | Check attestation by txHash |
POST | /api/v1/webhooks | API key | Register HTTPS webhook for an attestation this key owns |
POST | /billing/subscribe | Bearer token | Upgrade subscription |
GET | /billing/portal | Bearer token | Manage billing |
GET | /mcp/resources | Public | List MCP resource metadata (no bodies) |
GET | /mcp/prompts | Public | List MCP prompts |
POST | /api/v1/keys/rotate | Session cookie | Regenerate the signed-in user's API key |
POST | /api/v1/dashboard/verify | Session cookie | Attest from the dashboard without pasting a key |
GET | /api/v1/dashboard/status/:id | Session | Poll a dashboard attestation the user owns |
GET/PUT/POST/DELETE | /api/v1/admin/* | X-Admin-Key | Operator-only (disabled if ADMIN_API_KEY is unset) |
| Tool | Description |
|---|---|
verify_xrp_payment | Submit txHash for FDC attestation |
get_attestation_status | Check attestation by UUID (public subset unless owning key) |
lookup_attestation_by_tx | Find attestation by txHash (public subset unless owning key) |
get_server_info | Server + network info |
Connect via stdio: npm run start:mcp
| Param | Coston2 (Testnet) | Flare Mainnet |
|---|---|---|
| RPC | https://coston2-api.flare.network | https://flare-api.flare.network |
| Chain ID | 114 | 14 |
| FdcHub | 0x48aC463d7975828989331F4De43341627b9c5f1D | 0xc25c749DC27Efb1864Cb3DADa8845B7687eB2d44 |
| FdcVerification | 0x906507E0B64bcD494Db73bd0459d1C667e14B933 | 0x9394c7A36b3Da8de1b4F27cdD0a554dA4Fa7132d |
| DA Layer | https://ctn2-data-availability.flare.network | https://flr-data-availability.flare.network |
| Verifier API | https://fdc-verifiers-testnet.flare.network | https://fdc-verifiers-mainnet.flare.network |
| Source ID | testXRP | XRP |
| First Voting Round | 1658430000 | 1658430000 |
| Attestation fee | 1 test FLR | 20 FLR |
┌───────────────────────┐
│ User dApp │ (Flare EVM) │ (PaymentVerifier.sol)│ └────────┬──────────────┘ │ verifyXRPPayment(proof) ▼ ┌───────────────────────┐ │ FdcVerification │ (enshrined FDC protocol contract) │ (via ContractRegistry)│ └────────┬──────────────┘ │ ┌────┴────┐ │ DA Layer│──── Proof + response └────┬────┘ │ ┌────┴────┐ │ Verifier│──── ABI-encoded request with MIC └────┬────┘ │ XRP Testnet / Mainnet
Lookback: Flare's XRPPayment attestation (IXRPPayment lutlimit 0x127500) can only prove native XRP Payments from the last 14 days. Older hashes still exist on XRPL, but the hosted verifier returns INVALID: TRANSACTION DOES NOT EXIST. XRPLink preflights the ledger and returns TX_TOO_OLD instead of a misleading FdcHub error. Failed prepares do not consume monthly quota.
Key data flow:
See CONTRIBUTING.md. All contributions welcome — bug fixes, feature requests, docs improvements, and test additions.
XRPLink is source-available (BUSL-1.1) and built for the Flare ecosystem. Non-commercial use, evaluation, and personal use are free. Running XRPLink as a commercial service requires a license from the Licensor.
BUSL-1.1 — see LICENSE. Converts to MIT after four years.