Skip to main content
Glama
sandraschi

vcv-rack-mcp

by sandraschi

vcv_patch

Create, edit, validate, and import VCV Rack modular synth patches using plain JSON. Manage patch lifecycle with operations like listing and opening in rack.

Instructions

Patch authorship portmanteau — create, edit, validate, list, get, open_in_rack, rack_cycle, import.

Return Format

{"success": bool, "operation": str, ...operation-specific keys}

Examples

vcv_patch(operation="create", name="Ambient Drone", persona="generative", description="slow detuned drone") vcv_patch(operation="validate", patch_id="ambient-drone") vcv_patch(operation="list", persona="generative")

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameNo
pathNo
limitNo
reasonNo
personaNogenerative
patch_idNo
operationYes
descriptionNo
instructionNo
module_hintsNo
pending_sideloadNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, so the description must disclose behavioral traits. It mentions a return format with success and operation-specific keys but does not explain side effects, required permissions, rate limits, or which operations are mutating vs. read-only.

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

Conciseness3/5

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

The description is relatively short but unstructured. The opening line is cryptic ('Patch authorship portmanteau'). The return format and examples are useful and front-loaded, but some content (e.g., the list of operations after a dash) could be clearer.

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?

Given 11 parameters and multiple operations, the description lacks detail on parameter constraints, which operations require which parameters, and error handling. An output schema exists but is not described explicitly. The examples help but are insufficient for full coverage.

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%, placing full burden on the description. Examples illustrate usage of operation, name, patch_id, persona, and description, but 7 of 11 parameters are not described at all (path, limit, reason, instruction, module_hints, pending_sideload). The description adds minimal meaning beyond the schema.

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

Purpose4/5

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

The description lists multiple operations (create, edit, validate, list, get, open_in_rack, rack_cycle, import) under the umbrella 'patch authorship portmanteau', indicating the tool handles various patch management tasks. Examples clarify usage. However, it doesn't provide a single concise purpose statement that distinguishes it from sibling tools like vcv_agentic_workflow.

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?

No guidance on when to use this tool versus siblings such as hub_status, vcv_catalog, or vcv_live. The description only enumerates operations without explaining context, prerequisites, or scenarios.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/sandraschi/vcv-rack-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server