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Echo722

reaper-mcp-bridge

by Echo722

remove_fx

Deletes an audio effect (FX) from a specified REAPER track using its index, helping you clean up or restructure a mix.

Instructions

Remove an FX from a track by FX index.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fx_indexYes
track_indexYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

B3.1/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description must carry the full behavioral burden. It states the destructive action ('Remove') but omits consequences like whether remaining FX indices shift, whether the operation is undoable, or what errors occur for invalid indices.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single front-loaded sentence with no filler or repetition. Every word contributes to stating the action, target, and required identifier.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutation tool with no annotations, no output schema, and 0% schema description coverage, the description is too thin. It doesn't cover how to obtain valid indices or what state changes after removal, leaving meaningful gaps for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must explain both parameters. It only clarifies that fx_index is an index used to identify the FX and implies an associated track, but does not explain track_index or whether indices are zero-based.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description gives a specific verb ('Remove'), resource ('an FX'), and scope ('from a track by FX index'). This cleanly separates it from siblings like add_fx, list_fx, set_fx_param, and set_fx_enabled without needing to name them.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no statement of when to use this tool versus alternatives, no prerequisites (such as needing an FX index from list_fx), and no exclusions. Usage is only implied by the operation itself.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.