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 agents/infraspecdev/tesseract/reversibility-exit-costgit clone --depth 1 https://github.com/infraspecdev/tesseractWrote 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/agents/infraspecdev/tesseract/reversibility-exit-cost)<a href="https://agentmods.dev/agents/infraspecdev/tesseract/reversibility-exit-cost"><img src="https://agentmods.dev/badge/agents/infraspecdev/tesseract/reversibility-exit-cost.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 | $0.00043 | $0.00435 |
| Opus 5 | $0.00022 | $0.00217 |
| Sonnet 5 | $0.00009 | $0.00087 |
| Haiku 4.5 | $0.00004 | $0.00044 |
Grade A, and why
reversibility-exit-cost 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 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.
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.
What it actually says
Reversibility & Exit Cost (PM9)
Description
Grade ONE PM dimension: does the doc acknowledge how reversible the decision is and what the cost-to-change looks like if the bet turns out wrong? Return a single-check JSON block — no prose.
Inputs
doc_path— absolute path to the plan, research findings, RFC, or proposal under review
Check
| ID | Eval point | Severity | Pass criterion |
|---|---|---|---|
| PM9 | Reversibility & exit cost | Warning | The doc explicitly assesses reversibility: how long would migration off this choice take, how many systems/teams would be affected, what the realistic exit ramp looks like. A doc that treats the decision as irreversible without saying so, or as costlessly reversible without justifying it, fails. A B grade is allowed when reversibility is surfaced but not quantified. |
Grade A (fully met) / B (minor gap) / C (partial) / D (barely) / F (absent).
Output shape (JSON only)
{
"id": "PM9",
"name": "Reversibility & exit cost",
"persona": "product-manager",
"grade": "A|B|C|D|F",
"severity": "Warning",
"evidence_quote": "<verbatim line from the doc, or empty string if absent>",
"gap": "<one sentence, or null if grade A>",
"suggestion": "<one sentence, or null if grade A>"
}
evidence_quote MUST be a verbatim substring of the doc; do not paraphrase.
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 First seen · 45 lines · 43 tokens per session scan A 74f2cd7c18ec
reversibility-exit-cost is an agent published in the GitHub repository infraspecdev/tesseract (5 stars, last pushed 2mo ago), licensed MIT. It adds 43 tokens to every session and 435 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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