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mcp_opendaw_create_boom_bap

Create a boom-bap hip-hop drum pattern with classic, old school, trap, lofi, or drill style. Customize bars, pitch, velocity, and start beat.

Instructions

Create a boom-bap hip-hop drum pattern — the foundational beat of hip-hop.

Boom-bap: "boom" = kick drum, "bap" = snare. The pattern places kicks on beats 1 and 3, snares on beats 2 and 4 — the backbone of hip-hop from Run-DMC to Nas to Kendrick Lamar. Hi-hats fill the 8th or 16th notes between. The feel comes from swing/groove and kick placement variations.

boom_bap_type: "classic" — 90s boom-bap: kick on 1 and 3, snare on 2 and 4, hats on every 8th. The "Untitled" / Nas "Illmatic" feel. 2-bar cycle with kick variation on bar 2. "old_school" — 80s old school: simpler, kick strictly on 1 and 3, snare on 2 and 4, hats on quarter notes. Run-DMC / LL Cool J style. Less syncopation. "trap" — Trap: rolling hi-hats (16ths with occasional triplets), kick on 1 and "and of 2" and 3.5, snare on 4 only. Faster hats. Migos / Future style. "lofi" — Lo-fi hip-hop: laid-back, kick slightly behind beat (0.95 and 2.95), snare on 2 and 4, hats on 8ths with subtle swing. J Dilla / Nujabes feel. "drill" — UK drill: sliding bass kicks, snare on 3 only, chaotic hi-hat patterns with rolls. Headie One / Central Cee style. More aggressive kick patterns.

bars: Pattern length (2-16, 2 = one boom-bap cycle). kick_pitch: MIDI pitch for kick (36 = C1). snare_pitch: MIDI pitch for snare (38 = D1, acoustic snare). hat_pitch: MIDI pitch for hi-hats (42 = F#1, closed hat). velocity: Base velocity 0-1. Ghost hats -0.2, snares -0.05.

Returns notes created, boom-bap type, and stroke breakdown.

Example: create_boom_bap(boom_bap_type="classic", track_index=0) create_boom_bap(boom_bap_type="lofi", track_index=1, bars=4)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
barsNo
velocityNo
hat_pitchNo
kick_pitchNo
start_beatNo
unit_indexNo
snare_pitchNo
track_indexNo
boom_bap_typeNoclassic

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

With no annotations provided, the description carries full burden. It explains pattern structure, parameter effects on rhythm, and return values, but lacks details on side effects (e.g., whether existing notes are cleared) and does not fully disclose the behavior for each parameter combination.

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 front-loaded with purpose and provides structured subtype explanations, but parameter descriptions are embedded in prose rather than listed, making it slightly less scannable. Still efficient for the amount of detail.

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?

The description covers the main pattern types and parameters, but misses details on start_beat, unit_index, and track_index. It mentions return values partially, and does not address how the tool interacts with existing track content. Adequate but not fully comprehensive.

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%. The description adds meaning for bars, pitches, velocity, and boom_bap_type with examples, but fails to describe start_beat, unit_index, and track_index, leaving these parameters underdefined.

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 clearly states 'Create a boom-bap hip-hop drum pattern', explains the core concept, and distinguishes from sibling tools by focusing on a specific genre pattern with detailed subtype definitions.

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

Usage Guidelines4/5

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

The description explains when to use this tool (for hip-hop drum patterns) and provides context for each subtype, but it does not explicitly state when not to use it or compare it to alternatives like create_trap_arrangement or create_lofi_arrangement.

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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