reaper-mcp
reaper-mcp-server is a local Model Context Protocol (MCP) server that exposes REAPER DAW functionality (project management, track/MIDI/Fx/audio operations, mixing/mastering, rendering, and audio analysis) to AI agents, using python-reapy with REAPER’s distant API enabled.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Likely local-only interaction, but there is no documented auth/TLS layer for the MCP server itself. Enabling REAPER’s distant API increases the attack surface of the local machine/process; ensure only trusted local users/processes can reach the server. Dependencies include audio/analysis libraries (numpy/librosa/pyloudnorm/soundfile) which are common but still warrant vulnerability monitoring.
⚡ Reliability
Best When
You have REAPER installed locally, can enable REAPER’s distant API, and want an agent to drive REAPER via MCP tools rather than manual DAW scripting.
Avoid When
You cannot enable REAPER’s distant API or you need network-exposed access with strong auth/TLS; the interface appears intended for local use rather than remote sharing.
Use Cases
- • Automate REAPER project creation and editing from an AI agent
- • Generate MIDI items and drum patterns and place them into REAPER projects
- • Programmatically apply FX/mixing/mastering chains and render stems
- • Run audio analysis (loudness, dynamics, spectrum, stereo field, transients, clipping) on REAPER material
Not For
- • Use as a hosted multi-tenant service (it appears designed for local REAPER control)
- • Security-sensitive automation where strong authentication/auditing is required across machines
- • Cloud deployment without a local REAPER instance accessible
Interface
Authentication
No authentication mechanism is described for the MCP server. Access likely depends on local execution and the security posture of the REAPER distant API environment.
Pricing
MIT-licensed open source; pricing not applicable based on provided materials.
Agent Metadata
Known Gotchas
- ⚠ Many tool actions modify DAW state (create/delete/insert FX/items). Agents should confirm intent and avoid repeated calls without checking current project state.
- ⚠ REAPER’s distant API must be enabled (and likely only works when REAPER is open/running).
- ⚠ Audio rendering/recording can be time-consuming and may require sequencing and waiting for completion.
- ⚠ Parameter naming/types are not shown in the README; tool schemas may be necessary to ensure correct arguments.
Alternatives
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Scores are editorial opinions as of 2026-03-30.