1acre MCP

The official MCP (Model Context Protocol) server for 1acre.in — India's verified land marketplace. Connect Claude Code, Cursor, Claude Desktop, or any MCP-compatible client to look up survey numbers, browse cadastral data, and generate land-intelligence reports on behalf of your 1acre account.

This repository contains the client-side configuration and documentation — how to connect. The server itself runs at https://mcp.1acre.in.

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What you can do

Once connected, any MCP client can call these tools as the signed-in 1acre user:

Paid tools spend from your "1a" token balance. Free tools cost nothing — once a report exists, you can re-open it and pull its boundary coordinates as often as you like without spending another token.

Call get_token_balance first (it's free) to see your live balance and the current per-tool price. A run that would overdraw fails with insufficient_tokens and is recoverable — top up from the My Tokens page on 1acre and retry.

"Tokens" here means 1acre land-intelligence credits — unrelated to the OAuth access tokens your MCP client manages for sign-in.

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Quick start — Claude Code

claude mcp add --scope user --transport http 1acre https://mcp.1acre.in/mcp \
  --callback-port 8118 \
  --client-id eKg8BebDnd09zxwy

Then in Claude Code:

1. Type /mcp — you'll see 1acre with Needs authentication
2. Click Sign In
3. Browser opens 1acre's sign-in page (phone number)
4. Enter your phone number → receive OTP via SMS → enter code
5. Consent screen → Allow
6. 1acre flips to ✓ Connected

Now ask Claude anything land-related: "How many 1acre tokens do I have left?", "What districts does Telangana have?", etc.

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Quick start — Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or the equivalent path on your OS:

{
  "mcpServers": {
    "1acre": {
      "url": "https://mcp.1acre.in/mcp",
      "transport": "http",
      "oauth": {
        "clientId": "eKg8BebDnd09zxwy",
        "callbackPort": 8118
      }
    }
  }
}

Restart Claude Desktop. Sign in via the MCP servers dialog.

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Quick start — Cursor

Cursor's MCP config lives at ~/.cursor/mcp.json. Add:

{
  "mcpServers": {
    "1acre": {
      "url": "https://mcp.1acre.in/mcp"
    }
  }
}

Cursor prompts you to authenticate on first tool call.

More detailed examples in examples/.

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Authentication

1acre MCP uses OAuth 2.1 with PKCE. Sign-in is phone-number-based via one-time SMS verification (secure, DLT-compliant for Indian phone numbers).

• Your phone number becomes your identity.
• You must have a 1acre.in account first — sign up at 1acre.in with the phone number you plan to use. MCP resolves your Clerk identity to that Account by matching the phone.
• Sessions are managed by the auth server; your MCP client refreshes tokens automatically.

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Registering an OAuth client

Most clients register automatically. 1acre's OAuth provider supports RFC 7591 Dynamic Client Registration at https://clerk.1acre.in/oauth/register — MCP clients that speak DCR (Claude Code, Smithery, and others) discover this from .well-known/oauth-authorization-server and register themselves on first connect. You don't need to do anything, and the --client-id flag in the Quick Start above is only needed if your client can't do DCR.

Manual registration (only if your client doesn't support DCR)

Contact hello@1acre.in with:

1. Your MCP client name (e.g. "Internal agent X")
2. The exact callback URL your client will use

You'll receive a client_id (public — safe to commit; PKCE-only, no client secret).

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Available at

• MCP endpoint: https://mcp.1acre.in/mcp
• Discovery: https://mcp.1acre.in/.well-known/oauth-protected-resource
• Health: https://mcp.1acre.in/healthz

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Costs & limits

• Free tools (balance check, discovery, hierarchy browse, list survey numbers, sell-listing intent, re-read reports, get coordinates): unlimited
• Paid tools:
  • get_layer_info — 5 tokens per layer that returns a feature (misses are free)
  • list_lands_in_region — 1 token per non-empty page (10 listings per page; empty pages are free)
  • create_survey_number_report — 10 tokens per report
  • identify_parcel_at_point — 10 tokens per run
• Rate limits: 60 requests/minute per OAuth access token

Token allowance by account tier:

Tokens expire 365 days after they are credited — this is a balance, not a lifetime allowance. Purchased top-up packs stack on top of your tier allowance, so a balance above the figures above is normal. get_token_balance is always the source of truth for what's actually spendable.

For higher limits, contact hello@1acre.in.

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Support

• Issues: github.com/1acre-in/1acre-mcp/issues
• Email: hello@1acre.in

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License

MIT — see LICENSE.

Server code is not open source; this repo covers client-side configuration and documentation only.