Ardour Ultra MCP

by Elias02345

Overview Schema Source Related Servers Discussions Admin

Python

Local

set_loop

Idempotent

Update an existing Ardour loop range and enable looping by specifying precise start and end positions.

Instructions

Update an existing Ardour loop location and enable loop.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "request": "<request>"
    },
    "name": "set_loop"
  }
}

Input Schema

Name	Required	Description	Default
`request`	Yes

Output Schema

Name	Required	Description	Default
`data`	No
`error`	No
`success`	No
`warnings`	No
`revision_after`	No
`changed_objects`	No
`revision_before`	No

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Nov 9, 2026

TDQS

C2.9/5.0

Behavior3/5

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

Annotations already declare this as a non-read-only, idempotent, non-destructive mutation, so the safety profile is covered. The description adds real value by stating that the loop is enabled as a side effect and that the target must already exist. However, it says nothing about the dry-run, confirm_delete, or expected_revision capabilities that materially change how the call behaves.

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 single sentence is front-loaded and free of waste, which is good. But here brevity comes at the cost of substance: at least one more sentence about the mutation's safeguards or the time-range units would have earned its place.

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?

Output schema exists, so return values need not be explained. Still, for a mutation tool whose only argument hides dry-run, delete-confirmation, and optimistic-revision controls, the description leaves too much unsaid for an agent to call it confidently.

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

Parameters3/5

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

Schema description coverage is 0% for the single request object, which nests a TimeRange with four mutually exclusive position unit variants plus dry_run, confirm_delete, and expected_revision. The description adds no meaning about units, the dry-run preview mode, or revision-based conflict handling, so all of that must be read from the schema itself.

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?

"Update an existing Ardour loop location and enable loop" gives a specific verb (update), a specific resource (loop location), and an explicit side effect (enable loop). It is clear what the tool does, though it never names the sibling clear_loop or otherwise distinguishes itself from other loop-related operations.

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 guidance on when to use this versus clear_loop or a general transport/position tool, and no prerequisites are stated. The word "existing" weakly implies the loop location must already be present, but that is inference rather than explicit guidance.

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

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