AssemblyAI MCP

AssemblyAI MCP is a Model Context Protocol server for AssemblyAI, a speech-to-text API used for transcription and audio understanding. It gives an agent a way to move audio and video into text without the developer writing a client, a polling loop, or an upload path. The agent submits a local file or a hosted URL, the server hands it to AssemblyAI, and the finished transcript comes back as structured text the agent can quote, summarize, or feed into a downstream task. The transcript is more than a flat string. A request can ask for speaker labels so each utterance is attributed, word-level timestamps so a quote can be traced back to a moment in the recording, and language identification for multilingual material. Audio intelligence features are reachable in the same flow, covering summaries, topic and sentiment signals, content moderation flags, and redaction of sensitive details spoken aloud, so an agent can return a cleaned or condensed version rather than a raw dump. It fits meeting notetakers, podcast and video workflows, support call review, and any assistant that needs to answer questions about recorded conversations. Because the server holds the API key and manages the long-running job, the agent side stays simple: submit, wait, read. Usage is metered on the AssemblyAI account behind the key, so audio volume rather than agent chatter drives what you consume.