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 LiarMTTT/TavernWeave --skill sillytavern-rolecard-performancegit clone --depth 1 https://github.com/LiarMTTT/TavernWeaveWrote 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/liarmttt/tavernweave/sillytavern-rolecard-performance)<a href="https://agentmods.dev/skills/liarmttt/tavernweave/sillytavern-rolecard-performance"><img src="https://agentmods.dev/badge/skills/liarmttt/tavernweave/sillytavern-rolecard-performance/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/liarmttt/tavernweave/sillytavern-rolecard-performance"><img src="https://agentmods.dev/badge/skills/liarmttt/tavernweave/sillytavern-rolecard-performance.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 | $0.00070 | $0.00908 |
| Opus 5 | $0.00035 | $0.00454 |
| Sonnet 5 | $0.00014 | $0.00182 |
| Haiku 4.5 | $0.00007 | $0.00091 |
Grade A, and why
sillytavern-rolecard-performance scanned grade A 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 5d 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.
Asks the agent to reveal its instructionslowSystem prompt leakage
Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.
The report contains counts, byte totals, and metric paths only. It must not echo prompt text, scripts, URLs, data URIs, or embedded media. Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
10 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.
- agents/openai.yaml 264 B
- references/runtime-sampling.md 1.3 KB
- references/static-budget-contract.md 2.0 KB
- scripts/check-performance-budget.mjs 3.3 KB runs code
- scripts/measure-rolecard-performance.mjs 4.4 KB runs code
- scripts/validate-runtime-sample.mjs 3.0 KB runs code
- tests/fixtures/budget.json 186 B
- tests/fixtures/rolecard.json 999 B
- tests/fixtures/runtime-sample.json 424 B
- tests/scripts.test.mjs 2.2 KB runs code
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.
- 5d ago Changed · +6 lines 09290b75a4e7
- 13d ago First seen · 87 lines · 70 tokens per session scan A 39f2b9e5c77c
sillytavern-rolecard-performance is a skill published in the GitHub repository LiarMTTT/TavernWeave (111 stars, last pushed 5d ago), with no licence file. It adds 70 tokens to every session and 908 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (asks the agent to reveal its instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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