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.
npx agentmods add skills/zalom/plastic/intent-planningnpx skills add zalom/plastic --skill intent-planninggit clone --depth 1 https://github.com/zalom/plasticWrote 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.
[](https://agentmods.dev/skills/zalom/plastic/intent-planning)<a href="https://agentmods.dev/skills/zalom/plastic/intent-planning"><img src="https://agentmods.dev/badge/skills/zalom/plastic/intent-planning.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00041 | $0.01968 |
| Opus 5 | $0.00020 | $0.00984 |
| Sonnet 5 | $0.00008 | $0.00394 |
| Haiku 4.5 | $0.00004 | $0.00197 |
Grade A, and why
plastic-intent-planning 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 4d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Writing Plans
Overview
Write comprehensive implementation plans assuming the engineer has zero context for our codebase and questionable taste. Document everything they need to know: which files to touch for each task, code, testing, docs they might need to check, how to test it. Give them the whole plan as bite-sized tasks. DRY. YAGNI. TDD. Frequent commits.
Assume they are a skilled developer, but know almost nothing about our toolset or problem domain. Assume they don't know good test design very well.
Active Intent Gate
Before proceeding, resolve the active intent:
- Detect store: Read
~/.plastic/projects.yml, match CWD against registered project paths. If match → project store at~/.plastic/projects/{slug}/store/. If no match → global store at~/.plastic/store/. - Find active intent: Read
INDEX.mdfrom the detected store. Look under## Active. If exactly one → use it. If multiple → ask which. If none → refuse: "No active intent. Create one first with /plastic-intent-creating" - Resolve intent directory:
{store}/store/{id}--{slug}/ - Read spec: Load
{intent_dir}/spec.md. If no spec exists → refuse: "No spec found. Run /plastic-intent-speccing first."
All artifacts go to the intent directory. Never write to external paths.
Scope Check
If the spec covers multiple independent subsystems, it should have been broken into sub-project specs during brainstorming. If it wasn't, suggest breaking this into separate plans, one per subsystem. Each plan should produce working, testable software on its own.
Tier shapes
Read ../plastic-conventions/references/tiers-and-dispatch.md for tier sizing and the
stage-to-agent dispatch rules behind this section. This path resolves relative to this skill's own
installed directory.
Read the spec's stamped Tier: line (written by intent-speccing) and pick the action shape it calls for. Every tier produces at least one REAL action file in actions/; the tier only changes how many:
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 4d ago First seen · 146 lines · 41 tokens per session scan A ba7ee422790b
plastic-intent-planning is a skill published in the GitHub repository zalom/plastic (10 stars, last pushed 2d ago), licensed MIT. It adds 41 tokens to every session and 1,968 once invoked, about $0.0002 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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