Dharun Ashokkumar Embeddings and reranking API

The Embeddings and reranking API from Dharun Ashokkumar — 2 operation(s) for embeddings and reranking.

Operations 4

GET /v1/embed Text embeddings #
POST /v1/embed Text embeddings #
GET /v1/rerank Rerank documents for a query #
POST /v1/rerank Rerank documents for a query #

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OpenAPI Specification

dharun-dev-embeddings-and-reranking-api-openapi.yml Raw ↑
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…'
  version: 1.1.35
servers:
- url: https://api.dharun.dev
tags:
- name: Embeddings and reranking
paths:
  /v1/embed:
    get:
      description: 'Up to 64 texts a request (GET: one or more text parameters; POST: JSON {"texts": [...], "type": ...}). Each comes back as 384 numbers scaled to length 1, so a dot product is the cosine similarity. Embed questions with type=query and the documents searched with type=passage, as the model was trained. Each text is read up to 512 tokens.'
      operationId: embed
      parameters:
      - description: A text; repeat for several (or POST them).
        in: query
        name: text
        required: false
        schema:
          type: string
      - description: query (default) for questions, passage for the documents searched.
        in: query
        name: type
        required: false
        schema:
          enum:
          - query
          - passage
          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: Text embeddings
      tags:
      - Embeddings and reranking
    post:
      description: 'Up to 64 texts a request (GET: one or more text parameters; POST: JSON {"texts": [...], "type": ...}). Each comes back as 384 numbers scaled to length 1, so a dot product is the cosine similarity. Embed questions with type=query and the documents searched with type=passage, as the model was trained. Each text is read up to 512 tokens.'
      operationId: embed_post
      parameters:
      - description: query (default) for questions, passage for the documents searched.
        in: query
        name: type
        required: false
        schema:
          enum:
          - query
          - passage
          type: string
      requestBody:
        content:
          application/json:
            schema:
              properties:
                text:
                  description: 'JSON: {"texts": ["..."], "type": "query" or "passage"}, or {"text": "..."}.'
                  type: string
                type:
                  description: query (default) for questions, passage for the documents searched.
                  enum:
                  - query
                  - passage
                  type: string
              required:
              - text
              type: object
          text/plain:
            schema:
              type: string
        description: 'JSON: {"texts": ["..."], "type": "query" or "passage"}, or {"text": "..."}. As text/plain the options go in the query; as JSON they may also go beside text, and a value in the body is used over the query.'
        required: true
      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: Text embeddings
      tags:
      - Embeddings and reranking
  /v1/rerank:
    get:
      description: Scores how well each document answers the query, from 0 to 1, and returns them best first with their place in the request. Up to 100 documents of up to 8,000 characters; each pair is read up to 512 tokens. GET takes query and repeated document parameters; POST takes JSON.
      operationId: rerank
      parameters:
      - description: The question, up to 2,000 characters.
        in: query
        name: query
        required: true
        schema:
          type: string
      - description: A candidate; repeat for each (or POST them).
        in: query
        name: document
        required: false
        schema:
          type: string
      - description: Return only the best few. Default all.
        in: query
        name: top
        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: Rerank documents for a query
      tags:
      - Embeddings and reranking
    post:
      description: Scores how well each document answers the query, from 0 to 1, and returns them best first with their place in the request. Up to 100 documents of up to 8,000 characters; each pair is read up to 512 tokens. GET takes query and repeated document parameters; POST takes JSON.
      operationId: rerank_post
      parameters:
      - description: The question, up to 2,000 characters.
        in: query
        name: query
        required: false
        schema:
          type: string
      - description: A candidate; repeat for each (or POST them).
        in: query
        name: document
        required: false
        schema:
          type: string
      - description: Return only the best few. Default all.
        in: query
        name: top
        required: false
        schema:
          type: integer
      requestBody:
        content:
          application/json:
            schema:
              properties:
                document:
                  description: A candidate; repeat for each (or POST them).
                  type: string
                query:
                  description: The question, up to 2,000 characters.
                  type: string
                text:
                  description: 'JSON: {"query": "...", "documents": ["...", "..."], "top": 3}.'
                  type: string
                top:
                  description: Return only the best few. Default all.
                  type: integer
              required:
              - text
              type: object
          text/plain:
            schema:
              type: string
        description: 'JSON: {"query": "...", "documents": ["...", "..."], "top": 3}. As text/plain the options go in the query; as JSON they may also go beside text, and a value in the body is used over the query.'
        required: true
      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: Rerank documents for a query
      tags:
      - Embeddings and reranking
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