The Undersigned API

No key, no sign-up. Every answer is JSON; add ?pretty=1 to read it.

curl "https://undersigned.provenby.dev/v1/apps?q=wallet&limit=5"
curl "https://undersigned.provenby.dev/v1/apps/com.solflare.mobile"
curl "https://undersigned.provenby.dev/v1/apps/com.solflare.mobile/reviews?sort=newest"
curl -H "Authorization: Bearer YOUR_KEY" "https://undersigned.provenby.dev/v1/watch?days=7"

JavaScript

const r = await fetch("https://undersigned.provenby.dev/v1/apps/com.solflare.mobile");
const app = await r.json();
console.log(app.signed.mean, app.signed.counted_reviews, app.store_rating);

Python

import requests
app = requests.get("https://undersigned.provenby.dev/v1/apps/com.solflare.mobile").json()
print(app["signed"]["mean"], app["signed"]["counted_reviews"])

Answers: 200 data · 402 needs a pass (the body carries the price and Solana Pay links) · 429 over the limit (Retry-After) · 404 unknown. Send a User-Agent header from scripts.

Ask how to do something with this API or MCP. Answered by AI from the published docs only; check the docs it points to.

This API is also a Model Context Protocol server at https://undersigned.provenby.dev/mcp. Add the URL to your agent; nothing to install. Its tools only read: search apps, get an app's scores, read its reviews, bursts and wallets. No tool writes, signs or submits a review.

Claude Code

claude mcp add --transport http undersigned https://undersigned.provenby.dev/mcp

Cursor and other clients (mcp.json)

{
  "mcpServers": {
    "undersigned": {
      "url": "https://undersigned.provenby.dev/mcp",
      "headers": { "Authorization": "Bearer YOUR_KEY" }
    }
  }
}

Claude (web or desktop): Settings, Connectors, add a custom connector with the URL above. The header line is only needed for the tools marked as needing a pass.