vst3

vst3 is a skill for Claude Code, Codex from Generous-Corp/pulp. It costs 46 tokens per session (16,303 once invoked), scanned C, original, MIT.

VST3 format adapter for Pulp — SingleComponentEffect wiring, bus arrangement negotiation, parameter / MIDI event routing, state round-trip, and the pitfalls discovered while wiring the adapter against Steinberg's SDK.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/generous-corp/pulp/vst3
Any agent
npx skills add Generous-Corp/pulp --skill vst3
Clone the repo
git clone --depth 1 https://github.com/Generous-Corp/pulp

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for vst3

README.md
[![agentmods](https://agentmods.dev/badge/skills/generous-corp/pulp/vst3.svg)](https://agentmods.dev/skills/generous-corp/pulp/vst3)
Your own site
<a href="https://agentmods.dev/skills/generous-corp/pulp/vst3"><img src="https://agentmods.dev/badge/skills/generous-corp/pulp/vst3.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 16,303 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00046 $0.16303
Opus 5 $0.00023 $0.08152
Sonnet 5 $0.00009 $0.03261
Haiku 4.5 $0.00005 $0.01630

Measured today against content hash e97744f2089b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

vst3 scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf ~/Library/Audio/Plug-Ins/VST3/MyPlugin*.vst3
.agents/skills/vst3/SKILL.md · 1,206 lines

How it starts

The opening of the file, as written. The whole thing — 1,206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

VST3 Skill

Use this skill when touching Pulp's VST3 adapter, when answering questions about how a Pulp plugin behaves inside Cubase / Nuendo / Studio One / Reaper (VST3 lane) / FL Studio / Ableton Live (VST3 lane), or when a pluginval run surfaces something odd. VST3 is one of Pulp's three first-class plugin formats alongside CLAP and AU v3.

When to use

  • Editing core/format/src/vst3_adapter.cpp or its header.
  • Changing the generator macro PULP_VST3_PLUGIN(…) in core/format/include/pulp/format/vst3_entry.hpp.
  • Changing bus-arrangement negotiation, parameter registration, MIDI event routing, state save/restore, or editor lifecycle.
  • A VST3 host reports a behaviour issue — sidechain not exposed, mono↔stereo swap crashes the track, automation not recorded, tempo-sync glitches, preset load misbehaves.
  • A pluginval --strictness-level 5 run regresses.
  • Working on the ARA VST3 surface — but first read the ara skill.

Files and entry points

Role Path
Core adapter (C++) core/format/src/vst3_adapter.cpp
Adapter header / PulpVst3Processor core/format/include/pulp/format/vst3_adapter.hpp
Entry-point generator macro core/format/include/pulp/format/vst3_entry.hpp
Editor IPlugView implementation core/format/src/vst3_plug_view.cpp, core/format/include/pulp/format/vst3_plug_view.hpp
Info.plist template (macOS bundle) tools/cmake/PulpInfoPlist.vst3.in
VST3 SDK fetch external/vst3sdkgit clone --depth 1 --branch v3.8.0_build_66 https://github.com/steinbergmedia/vst3sdk.git (MIT)
CLI validator invocation tools/cli/cmd_validate.cpp (pluginval --strictness-level 5 --timeout-ms 30000 --validate …)

There is no hand-written PulpVst3.cmake helper — the VST3 target is wired directly in the top-level CMakeLists.txt / PulpPlugin CMake surface.

The VST3 editor lives in a sibling file (vst3_plug_view.cpp) that is owned by the view-bridge skill per skill_path_map.json. Edits to the editor surface trigger the view-bridge skill rather than this one.

Read the full file on GitHub · 1,206 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 1,206 lines · 46 tokens per session scan C e97744f2089b

Subscribe to this mod's changes

vst3 is a skill published in the GitHub repository Generous-Corp/pulp (16 stars, last pushed today), licensed MIT. It adds 46 tokens to every session and 16,303 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

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