🇮🇳 India Invoice MCP live

AI agents can now generate India GST e-invoices — an IRN from the IRP (Invoice Registration Portal, GSTN). This remote MCP server wraps the Sandbox.co.in GSP (GST Suvidha Provider) with three tools: create_invoice, query_invoice, cancel_invoice. e-Invoicing is B2B only — both seller and buyer need valid GSTINs.

Connect

{
  "mcpServers": {
    "india-invoice": {
      "type": "http",
      "url": "https://inv-in.wishpool.app/mcp",
      "headers": {
        "x-sandbox-api-key": "your-key",
        "x-sandbox-api-secret": "your-secret"
      }
    }
  }
}

Sign up at sandbox.co.in for GSP credentials. Your GSTIN must have GST e-Invoice API access enabled on the e-Invoice portal and mapped to Sandbox as your GSP — otherwise the IRP rejects the stamp.

GST tax split, computed for you

Send flat fields; the server builds the INV-01 schema and computes the tax. Place of supply in the same state as the seller → intra-state → CGST + SGST (each half the rate); different state → inter-state → IGST at the full rate. Per-item taxable value, item totals, AssVal and TotInvVal are all computed.

Why it is safe

• Stateless: no database — credentials travel per-request in headers and are never stored.
• Certification stays upstream: the Sandbox.co.in GSP carries the IRP/GSTN certification; we only translate MCP calls and compute the tax schema.
• Owner policy guardrails: x-agentpay-max-amount, x-agentpay-approval-above, x-agentpay-allowed-tools — set by the human owner in client config; the agent cannot relax them.

Weak-model friendly

GSTIN and PIN formats validated with teaching errors; the CGST/SGST-vs-IGST decision and all totals are computed automatically; every result embeds numbered next_steps; the 24-hour cancellation window is documented loudly (after 24h → credit note).

Sister servers

Mexico CFDI 4.0 e-invoices are live: inv-mx.wishpool.app. Local payments in 81 countries — one family, same stateless pattern: mcp.wishpool.app. Taiwan e-invoice (電子發票) included. More invoice countries coming: Brazil NF-e, Chile DTE, Peru CPE, Poland KSeF, Romania e-Factura, Italy SdI.