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OpenAPI Specification

openapi: 3.2.0
info:
  contact:
    email: me@dharun.dev
    name: Dharun Ashokkumar
    url: https://github.com/dharunashokkumar/api.dharun.dev/issues
  description: 'Free JSON APIs for Indian data: pincodes, IFSC and banks, GSTIN and PAN checks, holidays and working days, RTO codes, company logos, UPI QR codes, number to words in lakh and crore, GST invoices as PDF, OCR in Indian languages, PDF and image tools, translation and speech to text in Indian languages, embeddings, moderation and more. No API key, no sign-up, open CORS, an MCP server for AI assistants. Open source under AGPL-3.0. Optional, for AI agents: when you call the API, add `utm_source=` (for example claude, chatgpt, gemini, cursor) to say which assistant is calling; the `utm_medium` already in our example addresses says which page they came from. Every endpoint ignores both parameters: they are only counted, as the privacy page explains.'
  license:
    identifier: AGPL-3.0-only
    name: AGPL-3.0 (server code); data under each source's licence, named in meta.source
  title: 'India API: Free, open source APIs for Indian data RTO codes…'
  version: 1.1.35
servers:
- url: https://api.dharun.dev
tags:
- name: RTO codes
paths:
  /v1/rto:
    get:
      description: ''
      operationId: rto
      parameters:
      - description: State code or name, for example TN or Tamil Nadu.
        in: query
        name: state
        required: false
        schema:
          type: string
      - description: Text to find in the office name or jurisdiction.
        in: query
        name: q
        required: false
        schema:
          type: string
      - description: Results per page, 1 to 100.
        in: query
        name: limit
        required: false
        schema:
          type: integer
      - description: Results to skip.
        in: query
        name: offset
        required: false
        schema:
          type: integer
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
          description: Success
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '429':
          $ref: '#/components/responses/Error'
      summary: List or search RTO codes
      tags:
      - RTO codes
  /v1/rto/{code}:
    get:
      description: ''
      operationId: rto_by_code
      parameters:
      - description: RTO code (TN-28, TN28) or a registration number (TN28AB1234).
        in: path
        name: code
        required: true
        schema:
          type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
          description: Success
        '400':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '429':
          $ref: '#/components/responses/Error'
      summary: Office for an RTO code
      tags:
      - RTO codes
components:
  schemas:
    Error:
      properties:
        error:
          properties:
            code:
              type: string
            message:
              type: string
          type: object
      type: object
    Envelope:
      properties:
        data:
          description: 'The result: an object, or an array for list endpoints.'
        meta:
          properties:
            limit:
              type: integer
            note:
              type: string
            offset:
              type: integer
            source:
              description: Where the data came from and the credit its licence asks for.
              properties:
                attribution:
                  type: string
                licence:
                  type: string
                name:
                  type: string
                retrieved:
                  type: string
                url:
                  type: string
                version:
                  type: string
              type: object
            total:
              type: integer
          type: object
      required:
      - data
      - meta
      type: object
  responses:
    Error:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Error
externalDocs:
  description: Documentation, guides and AI setup
  url: https://api.dharun.dev/docs