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mcp_opendaw_create_call_and_response

Create call-and-response musical phrases for two tracks to build melodic dialogue. Supports echo, transpose, variation, and complementary response types.

Instructions

Create call-and-response — two phrases in musical dialogue.

Call-and-response is the most fundamental musical conversation: a leader phrase (call) followed by a response phrase. Root of blues, gospel, African music, jazz, work songs, and hip-hop.

Response types:

  • echo: exact repeat of the call (African tradition, gospel)

  • transpose: repeat transposed by response_interval semitones (blues, jazz — response at IV or V)

  • variation: same pitches, varied rhythm (jazz, bebop)

  • complementary: contrasting phrase using scale degrees (gospel, soul — response "answers" the call)

  • fill: shorter response — last note only, or 2-note fill (blues turnaround, funk fills)

Call pattern: space-separated scale degrees (0=root, 2=2nd, etc.). Call rhythm: space-separated durations in beats. Response interval: for transpose type, semitones to shift (5 = perfect 4th up, 7 = perfect 5th up, -5 = 4th down). Pairs: number of call-response pairs. Gap beats: silence between call and response.

Creates call on track_index, response on track_index+1.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pairsNo
key_rootNoC
velocityNo
gap_beatsNo
scale_nameNomajor
start_beatNo
unit_indexNo
call_rhythmNo0.5 0.5 0.5 1.0 0.5 0.5
track_indexNo
call_patternNo0 2 4 7 4 2
response_typeNoecho
response_intervalNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

With no annotations, the description carries the burden. It discloses a key side effect (creates call on track_index and response on track_index+1) and explains response generation behavior via response types. However, it does not state whether existing notes are overwritten, if tracks must exist, or other side effects, leaving uncertainty.

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

Conciseness4/5

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

The description is well-structured with an intro, context paragraph, bulleted response types, and parameter explanations. It is longer than necessary but every section contributes useful information. The opening sentence front-loads the purpose.

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

Completeness3/5

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

Given the tool's complexity (12 parameters, 5 response types), the description covers core concepts and several parameters but omits key parameters and preconditions. Output schema exists, so return values are not needed, but the description still leaves gaps in usage understanding.

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?

The schema has 0% description coverage, so the description must explain parameters. It explains call_pattern, call_rhythm, response_interval, pairs, gap_beats, and response_type with examples. However, it omits key_root, scale_name, velocity, start_beat, and unit_index, leaving about half the parameters without semantic context.

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 clearly states the tool creates a call-and-response pattern with specific verb and resource. It explains the musical concept and response types, making the purpose unambiguous. However, it does not differentiate from the closely named sibling mcp_opendaw_create_call_response, which seems functionally similar.

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

Usage Guidelines3/5

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

The description implies usage in genres like blues, gospel, jazz, African music, work songs, and hip-hop by citing these traditions, but it does not explicitly state when to use this tool vs alternatives or provide exclusions. It gives context but no direct 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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