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 skills add wazimmerman/zimster --skill using-zimstergit clone --depth 1 https://github.com/wazimmerman/zimsterWrote 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/wazimmerman/zimster/using-zimster)<a href="https://agentmods.dev/skills/wazimmerman/zimster/using-zimster"><img src="https://agentmods.dev/badge/skills/wazimmerman/zimster/using-zimster/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/wazimmerman/zimster/using-zimster"><img src="https://agentmods.dev/badge/skills/wazimmerman/zimster/using-zimster.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00023 | $0.01896 |
| Opus 5 | $0.00012 | $0.00948 |
| Sonnet 5 | $0.00005 | $0.00379 |
| Haiku 4.5 | $0.00002 | $0.00190 |
Grade A, and why
using-zimster 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 9d 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 — 217 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Using Zimster
One capable agent normally owns planning, implementation, RED-GREEN-REFACTOR, debugging, independent review, worktree isolation, and evidence-based completion.
Select the smallest workflow
Do not load every skill; plan or dispatch only when it materially helps.
| Situation | Load |
|---|---|
| Exact low-risk behavior change | test-driven-development, then verification |
| Bug or unexplained failure | systematic-debugging, then TDD |
| Multi-file change with consequential choices | designing-work, then writing-plans |
| Approved plan or coherent implementation request | owner-driven-development |
| Two genuinely independent workstreams | dispatching-parallel-agents |
| Reviewed seam or integration range | risk-adaptive-review |
| Branch completion or handoff | finishing-a-development-branch |
User and repository instructions override Zimster defaults.
Deterministic execution profile
Classify the six dimensions in risk-adaptive-review, then select one profile.
Always report the selected profile and its risk rationale before implementation.
Micro
Use Micro only when all dimensions are Low and all of these are true:
- single coherent slice;
- local blast radius;
- no public compatibility contract;
- no meaningful concurrency, security, destructive-data, external-service, native-OS, or hardware boundary;
- deterministic automated proof;
- no independent review.
The owner implements, runs focused/affected proofs, and performs fresh final verification.
Standard
Use Standard for subsystem or cross-component work with Medium dimensions but no High dimension or hard trigger. The owner implements vertical slices and reviews the concentrated seam or integration.
High risk
Use High risk when any dimension is High or any hard trigger exists:
- authentication, authorization, secrets, or trust boundaries;
- destructive data change, migration, or rollback risk;
- races, cancellation, lock ordering, or resource ownership;
- public API/protocol compatibility;
- native OS, hardware, unstable external service, or live-only evidence;
- new architecture with broad blast radius.
What ships with it
5 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.
- 9d ago First seen · 217 lines · 23 tokens per session scan A a22f08cb5fb8
using-zimster is a skill published in the GitHub repository wazimmerman/zimster (2 stars, last pushed 8d ago), licensed MIT. It adds 23 tokens to every session and 1,896 once invoked, about $0.0001 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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