Tools: New Show Hn: Audio Toolkit For Agents 2026

A suite of 25 audio processing tools — trim, normalize, compress, EQ, reverb, pitch-shift, time-stretch, key detection, MIDI extraction, and more — exposed as MCP tools via DeclarAgent.

Every tool accepts WAV files and outputs structured JSON.

This is the primary use case — use these audio tools directly from Claude Code via MCP.

Now Claude Code has access to all 25 audio tools. Example conversation:

Add the same MCP server config to your editor's MCP settings. The command and args are identical — only the config file location differs per editor.

Each YAML plan file in plans/ defines one MCP tool. DeclarAgent reads these at startup and exposes them to MCP clients. When a tool is called, DeclarAgent runs the sas-processor CLI under the hood.

All subcommands output line-delimited JSON to stdout. Errors go to stderr as JSON.

Returns BPM, duration, sample rate, and channel count.

Detects the downbeat and trims audio to the specified number of bars.

Returns key, mode (major/minor), and confidence score.

Source: HackerNews