TwelveTake-Studios/reaper-mcp

v1.3.0 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 1mo MCP Developer Tools

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Topics

ai claude daw mastering mcp midi

+4 more

mixing model-context-protocol music-production reaper

Summary

AI summary

Added per‑take FX control (11 tools) and take comping utilities (7 tools).

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Low	Adds 18 new tools (135 → 153) for per-take FX control and comping. Adds 18 new tools (135 → 153) for per-take FX control and comping. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	Adds `take_fx_` tools for per-take FX management using REAPER's TakeFX API. Adds `take_fx_` tools for per-take FX management using REAPER's TakeFX API. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	Adds `get_takes`, `get_active_take`, `set_active_take` for take listing and switching. Adds `get_takes`, `get_active_take`, `set_active_take` for take listing and switching. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	Adds `explode_takes`, `crop_to_active_take`, `delete_take` for take manipulation. Adds `explode_takes`, `crop_to_active_take`, `delete_take` for take manipulation. Source: llm_adapter@2026-06-11 Confidence: high	—
Feature	Low	Adds `select_comp_lane` to control fixed‑lane comping via C_LANEPLAYS attribute. Adds `select_comp_lane` to control fixed‑lane comping via C_LANEPLAYS attribute. Source: llm_adapter@2026-06-11 Confidence: high	—
Dependency	Low	Bumps `mcp` dependency floor to >= 1.2.0 in pyproject.toml. Bumps `mcp` dependency floor to >= 1.2.0 in pyproject.toml. Source: llm_adapter@2026-06-11 Confidence: low	—
Dependency	Low	Bumps the minimum required version of `mcp` to >= 1.2.0 in pyproject.toml. Bumps the minimum required version of `mcp` to >= 1.2.0 in pyproject.toml. Source: granite4.1:30b@2026-06-11-audit Confidence: low	—
Bugfix	Medium	Implements input validation on index arguments; bad calls now return clean errors. Implements input validation on index arguments; bad calls now return clean errors. Source: llm_adapter@2026-06-11 Confidence: high	—

Full changelog

Takes & Take FX — 18 new tools (135 → 153), fully backward compatible. The multi-take release: per-take FX control and take management/comping. All tools live-verified against REAPER 7.74.

Added — Take FX (11 tools)

Per-take (per-item) FX control mirroring the track_fx_* tools, using REAPER's TakeFX_* API. Every take is addressed by (track_index, item_index, take_index):
take_fx_get_count, take_fx_get_list, take_fx_add_by_name, take_fx_delete, take_fx_get_name, take_fx_get_enabled, take_fx_set_enabled, take_fx_get_num_params, take_fx_get_param_name, take_fx_get_param, take_fx_set_param.

Added — Takes & comping (7 tools)

get_takes, get_active_take, set_active_take — list and switch takes.
explode_takes (in place), crop_to_active_take, delete_take — action IDs verified against live REAPER 7.74.
select_comp_lane — REAPER 7 fixed-lane comping via the C_LANEPLAYS track attribute (no mouse-dependent actions); errors clearly if the track is not in fixed-lane mode.

New conventions (from v1.3.0 onward)

Tool annotations: read-only / destructive / idempotent hints on every new tool.
Input validation on index arguments — bad calls return clean errors instead of opaque bridge failures.

Changed

pyproject.toml: bumped mcp floor to >=1.2.0 (guarantees the ToolAnnotations API).

Note: update your installed bridge — copy the new reaper_mcp_bridge.lua over the old one and restart the script in REAPER.

Full changelog: https://github.com/TwelveTake-Studios/reaper-mcp/blob/main/CHANGELOG.md

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About TwelveTake-Studios/reaper-mcp

MCP server enabling AI assistants to control REAPER DAW for mixing, mastering, MIDI composition, and full music production with 129 tools

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Earlier breaking changes

v1.3.2 `render_project` now requires an explicit `overwrite` parameter to allow file overwriting.