pluginpack-build-and-verify

A build and checking guide for pluginpack, a tool that creates native add-ons for several coding-agent apps from one source.

In plain words
What is it for?
Use it to build all or one configured target, preview planned files, validate an output folder, or make CI detect outdated generated repositories.
Why use it?
It helps catch failed builds, invalid generated files, old output, and differences between generated files and a published plugin repository.

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/gleanwork/pluginpack/pluginpack-build-and-verify
Any agent
npx skills add gleanwork/pluginpack --skill pluginpack-build-and-verify
Clone the repo
git clone --depth 1 https://github.com/gleanwork/pluginpack

Made for: Claude Code, Codex.

Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 516 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00068 $0.00516
Opus 5 $0.00034 $0.00258
Sonnet 5 $0.00014 $0.00103
Haiku 4.5 $0.00007 $0.00052

Measured yesterday against content hash 71d41b2b90ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pluginpack-build-and-verify scanned grade A with 0 findings 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 yesterday.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/pluginpack-build-and-verify/SKILL.md · 61 lines

What it actually says

Building and verifying with pluginpack

pluginpack is a deterministic build tool. Every command is scriptable and exits non-zero on failure.

Build

pluginpack build                      # all configured targets
pluginpack build --target cursor      # one target
pluginpack build --target claude --dry-run   # print planned managed files, write nothing

Exit 0 on success; 1 on config/source/output failure. The build errors if two targets resolve to the same output path (give them distinct outDirs).

Validate

pluginpack validate --target cursor --dir ../cursor-plugins

Checks an output directory against that target's native manifest/path/frontmatter rules. Exit 0 = passes, 1 = errors. (For Claude, claude plugin validate is the authoritative check; pluginpack's conformance tests use it when available.)

Diff (CI staleness gate)

pluginpack diff --target cursor --against ../cursor-plugins

Builds to a temp dir and compares managed files against an existing target repo. Exit 1 when the repo is stale — wire this into CI to fail or to open a PR against the generated repo. Use ignoredDiffPaths in the target config for paths the generated repo intentionally owns.

Prune / clean

pluginpack prune --dry-run    # show stale managed files
pluginpack prune              # remove them
pluginpack clean --target cursor   # remove all managed files for a target

These only touch files recorded in .pluginpack/<target>.json. A guard refuses to delete anything inside your declared source (source.skills/source.plugins) or the config; pass --force to override (rarely needed — usually it means an outDir overlaps your source).

Developing pluginpack itself

Run the full gate before considering work done: npm run check (format, lint, typecheck, test, build, docs). Regenerate the README CLI reference with node dist/cli.js docs after changing commands.

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. yesterday First seen · 61 lines · 68 tokens per session scan A 71d41b2b90ce

Subscribe to this mod's changes

pluginpack-build-and-verify is a skill published in the GitHub repository gleanwork/pluginpack (5 stars, last pushed 21d ago), licensed MIT. It adds 68 tokens to every session and 516 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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