Dharun Ashokkumar Speech API
The Speech API from Dharun Ashokkumar — 4 operation(s) for speech.
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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 Speech API'
version: 1.1.35
servers:
- url: https://api.dharun.dev
tags:
- name: Speech
paths:
/v1/audio/denoise:
post:
description: Send a recording (MP3, WAV, Ogg, M4A, WebM, video files too) and get it back with fans, traffic and hum lowered, as mono 48 kHz. The first five minutes are cleaned. Options go in the query string, or as form fields when the file is sent as multipart/form-data.
operationId: audio_denoise
parameters:
- description: Default mp3.
in: query
name: format
required: false
schema:
enum:
- mp3
- ogg
- wav
type: string
- description: The most noise is lowered by, in decibels, 6 to 100. Lower values sound more natural. Default 100.
in: query
name: limit
required: false
schema:
type: integer
requestBody:
content:
audio/mp4:
schema:
format: binary
type: string
audio/mpeg:
schema:
format: binary
type: string
audio/ogg:
schema:
format: binary
type: string
audio/wav:
schema:
format: binary
type: string
audio/webm:
schema:
format: binary
type: string
multipart/form-data:
schema:
properties:
file:
format: binary
type: string
required:
- file
type: object
video/mp4:
schema:
format: binary
type: string
description: An audio or video file, up to 10 MB.
required: true
responses:
'200':
content:
audio/mpeg:
schema:
format: binary
type: string
audio/ogg:
schema:
format: binary
type: string
audio/wav:
schema:
format: binary
type: string
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'413':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Remove background noise
tags:
- Speech
/v1/stt:
post:
description: Send a recording (MP3, WAV, Ogg, M4A, WebM, video files too) and get the text with timed segments, as JSON, SRT or WebVTT subtitles, or plain text. Whisper small recognises about a hundred languages, Indian ones included; it is good on clear English and fair on Indian languages. task=translate gives English text whatever was spoken. The first five minutes are heard. Options go in the query string, or as form fields when the file is sent as multipart/form-data.
operationId: stt
parameters:
- description: 'auto (default) or the language spoken: en, hi, ta, te, kn, ml, mr, bn, gu, pa, ur, as, ne, sa, sd, or, ar, fr, de, es, zh, ja. Naming it helps on short clips.'
in: query
name: language
required: false
schema:
type: string
- description: transcribe (default) writes what was said; translate writes it in English.
in: query
name: task
required: false
schema:
enum:
- transcribe
- translate
type: string
- description: Default json.
in: query
name: format
required: false
schema:
enum:
- json
- srt
- vtt
- text
type: string
requestBody:
content:
audio/mp4:
schema:
format: binary
type: string
audio/mpeg:
schema:
format: binary
type: string
audio/ogg:
schema:
format: binary
type: string
audio/wav:
schema:
format: binary
type: string
audio/webm:
schema:
format: binary
type: string
multipart/form-data:
schema:
properties:
file:
format: binary
type: string
required:
- file
type: object
video/mp4:
schema:
format: binary
type: string
description: An audio or video file, up to 10 MB.
required: true
responses:
'200':
content:
application/json:
schema:
$ref: '#/components/schemas/Envelope'
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'413':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Speech to text, with subtitles
tags:
- Speech
/v1/tts:
get:
description: 'Returns the audio itself; X-Voice and X-Voice-Licence headers name the voice and its licence. Up to 3,000 characters; split longer text. Write the text in its own script: Hindi in Devanagari, Telugu in Telugu, Malayalam in Malayalam.'
operationId: tts
parameters:
- description: What to say (or POST it).
in: query
name: text
required: false
schema:
type: string
- description: A voice ID from /v1/tts/voices, or a language (hi, te, ml, en, en-GB) for its first voice that may be used commercially. Default en.
in: query
name: voice
required: false
schema:
type: string
- description: Default mp3.
in: query
name: format
required: false
schema:
enum:
- mp3
- ogg
- wav
type: string
- description: 0.5 to 2. Default 1.
in: query
name: speed
required: false
schema:
type: string
responses:
'200':
content:
audio/mpeg:
schema:
format: binary
type: string
audio/ogg:
schema:
format: binary
type: string
audio/wav:
schema:
format: binary
type: string
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Text to speech
tags:
- Speech
post:
description: 'Returns the audio itself; X-Voice and X-Voice-Licence headers name the voice and its licence. Up to 3,000 characters; split longer text. Write the text in its own script: Hindi in Devanagari, Telugu in Telugu, Malayalam in Malayalam.'
operationId: tts_post
parameters:
- description: A voice ID from /v1/tts/voices, or a language (hi, te, ml, en, en-GB) for its first voice that may be used commercially. Default en.
in: query
name: voice
required: false
schema:
type: string
- description: Default mp3.
in: query
name: format
required: false
schema:
enum:
- mp3
- ogg
- wav
type: string
- description: 0.5 to 2. Default 1.
in: query
name: speed
required: false
schema:
type: string
requestBody:
content:
application/json:
schema:
properties:
format:
description: Default mp3.
enum:
- mp3
- ogg
- wav
type: string
speed:
description: 0.5 to 2. Default 1.
type: string
text:
description: The text to speak.
type: string
voice:
description: A voice ID from /v1/tts/voices, or a language (hi, te, ml, en, en-GB) for its first voice that may be used commercially. Default en.
type: string
required:
- text
type: object
text/plain:
schema:
type: string
description: The text to speak. 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:
audio/mpeg:
schema:
format: binary
type: string
audio/ogg:
schema:
format: binary
type: string
audio/wav:
schema:
format: binary
type: string
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Text to speech
tags:
- Speech
/v1/tts/voices:
get:
description: Every voice with its language, speaker, licence and the credit the licence asks for.
operationId: tts_voices
parameters: []
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: Voices
tags:
- Speech
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