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1 · Choose your tool
2 · What are you building?
Claude prompt
Verify a PAN · 1,542 charactersI'm using Claude to build this.
Integrate the StampMitra API (Indian identity verification and e-Stamp Paper) into my app.
API facts (source of truth: https://developer.stampmitra.in/llms.txt)
- Base URL: https://api-b2b.stampmitra.in
- Auth: send "Authorization: Bearer <key>" (or "x-api-key: <key>") on every request
- Use a SANDBOX key (sk_test_...) while building. Read it from the environment variable STAMPMITRA_API_KEY.
- Never hard-code the key, never expose it to the browser, never log it.
- Call StampMitra only from server-side code. The UI calls my own backend route.
TASK: PAN verification form
- Endpoint: POST /v1/verify/pan (scope: verification.pan.read)
- Body: { "pan": "ABCDE1234F", "name": "Rahul Kumar" } // name is optional
- Response fields: referenceId, valid, registeredName, panStatus, nameMatchResult, message
- Validate the PAN format (ABCDE1234F) on client and server. A malformed PAN returns 400.
- "valid": false is still a completed verification. Show "PAN not valid", not a crash.
- Handle 400, 401, 429 (rate limit or quota) and 5xx with friendly messages and a loading state.
- Store referenceId with the user record for audit.
Before writing code, list the files you will create or change. Then implement. If the StampMitra MCP server (@stampmitra/mcp-server) is connected, use it to test real sandbox calls.
Acceptance checklist:
- Works end to end in Sandbox
- No secrets in client code or logs
- Clear loading, empty and error states
- If anything is missing (like my key), ask me. Do not guess.How to use it in Claude
Paste into a new Claude chat, or into Claude Code in your project folder. For live testing, add the StampMitra MCP server so Claude can call the API itself.
Before you paste
- 1Get a free sandbox key (
sk_test_…). - 2Put the key in an env var called
STAMPMITRA_API_KEY. Never paste the key into the chat. - 3Build and test in Sandbox. Apply for production access when it works.
Better with live tools: MCP
Claude and Cursor can call StampMitra directly through our MCP server.
{
"mcpServers": {
"stampmitra": {
"command": "npx",
"args": ["-y", "@stampmitra/mcp-server"],
"env": {
"STAMPMITRA_API_KEY": "sk_test_your_key_here"
}
}
}
}LLM indexdeveloper.stampmitra.in/llms.txt
MCP setup guide →