settlegrid-assemblyai

AssemblyAI MCP Server with per-call billing via SettleGrid.

Transcribe audio, retrieve transcripts, and generate AI-powered summaries and insights using AssemblyAI's speech-to-text and LeMUR APIs.

Quick Start

npm install
cp .env.example .env   # Add your SettleGrid API key
npm run dev

Methods

Method	Description	Cost
submit_transcription(audio_url: string, language_code?: string, speaker_labels?: boolean)	Submit audio URL for transcription	5¢
get_transcription(transcript_id: string)	Get transcription result by ID	1¢
list_transcriptions(limit?: number)	List recent transcripts	1¢
get_transcript_sentences(transcript_id: string)	Get sentences from a completed transcript	1¢
export_transcript(transcript_id: string, format: string)	Export transcript in SRT or VTT subtitle format	2¢
generate_summary(transcript_ids: string, context?: string)	Generate a LeMUR summary of a transcript	8¢
ask_lemur(transcript_ids: string, question: string)	Ask a question about a transcript using LeMUR	8¢
generate_action_items(transcript_ids: string, context?: string)	Extract action items from a transcript using LeMUR	8¢

Parameters

submit_transcription

• audio_url (string, required) — Publicly accessible URL of the audio file to transcribe
• language_code (string) — BCP-47 language code (e.g. 'en', 'es', 'fr'). Defaults to 'en'
• speaker_labels (boolean) — Whether to enable speaker diarization (default false)

get_transcription

• transcript_id (string, required) — The ID of the transcript to retrieve

list_transcriptions

• limit (number) — Maximum number of transcripts to return (default 10, max 50)

get_transcript_sentences

• transcript_id (string, required) — The ID of the completed transcript

export_transcript

• transcript_id (string, required) — The ID of the completed transcript
• format (string, required) — Export format: 'srt' or 'vtt'

generate_summary

• transcript_ids (string, required) — Comma-separated list of transcript IDs to summarize
• context (string) — Optional context or instructions to guide the summary

ask_lemur

• transcript_ids (string, required) — Comma-separated list of transcript IDs to query
• question (string, required) — The question to answer based on the transcript content

generate_action_items

• transcript_ids (string, required) — Comma-separated list of transcript IDs to analyze
• context (string) — Optional context or instructions to guide action item extraction

Environment Variables

Variable	Required	Description
SETTLEGRID_API_KEY	Yes	Your SettleGrid API key from settlegrid.ai
ASSEMBLYAI_API_KEY	Yes	AssemblyAI API key from https://www.assemblyai.com/dashboard

Upstream API

• Provider: AssemblyAI
• Base URL: https://api.assemblyai.com
• Auth: API key required
• Docs: https://www.assemblyai.com/docs

Deploy

Docker

docker build -t settlegrid-assemblyai .
docker run -e SETTLEGRID_API_KEY=sg_live_xxx -p 3000:3000 settlegrid-assemblyai

Vercel

Click the "Deploy with Vercel" button above, or:

npm run build
vercel --prod

License

MIT - see LICENSE

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Built with SettleGrid — The Settlement Layer for the AI Economy