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 Kastalien-Research/thoughtbox --skill thoughtbox-session-reviewgit clone --depth 1 https://github.com/Kastalien-Research/thoughtboxWrote 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/kastalien-research/thoughtbox/thoughtbox-session-review)<a href="https://agentmods.dev/skills/kastalien-research/thoughtbox/thoughtbox-session-review"><img src="https://agentmods.dev/badge/skills/kastalien-research/thoughtbox/thoughtbox-session-review/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/kastalien-research/thoughtbox/thoughtbox-session-review"><img src="https://agentmods.dev/badge/skills/kastalien-research/thoughtbox/thoughtbox-session-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00097 | $0.01377 |
| Opus 5.5 | $0.00039 | $0.00551 |
| Sonnet 5.5 | $0.00019 | $0.00275 |
| Haiku 4.5 | $0.00010 | $0.00138 |
Grade A, and why
thoughtbox:session-review 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 1mo 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 — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Thoughtbox Session Review
Sessions are write-once without review. This skill turns completed sessions into reusable knowledge by identifying what worked, what didn't, and what to carry forward.
Workflow
Phase 1: Retrieve and Measure
Find the session and get structural metrics:
// thoughtbox_execute — find the session
async () => {
// By ID:
const session = await tb.session.get("session-uuid");
// Or find latest:
const list = await tb.session.list({ limit: 1 });
return list;
}
// Get structural metrics
async () => {
const analysis = await tb.session.analyze("session-uuid");
return analysis;
// Returns: linearityScore, revisionRate, maxDepth, thoughtDensity,
// critiqueRequests, hasConvergence, isComplete
}
Interpret the metrics:
| Metric | High value means | Look for |
|---|---|---|
revisionRate > 0.15 |
Many course corrections | Anti-patterns — what kept going wrong? |
linearityScore < 0.7 |
Heavy branching | Exploration strategies — were branches productive? |
hasConvergence = true |
Branches resolved | Decision patterns — how was the choice made? |
isComplete = false |
Session abandoned | Why? Context loss? Stuck? Deprioritized? |
Phase 2: Identify Key Moments
Retrieve the full session and scan for signal thoughts:
async () => {
const session = await tb.session.get("session-uuid");
return session.thoughts;
}
Scan for these moment types:
- Pivots — reasoning direction changed. Look for: "actually", "wait", "on second thought", significant topic shift
- Decisions — uncertainty resolved. Look for: "choosing", "decided", "going with", comparison conclusions
- Insights — synthesis occurred. Look for: "this means", "the pattern is", "I see now", connections between ideas
- Revisions — corrections made. Check
isRevision: truefield - Branch points — exploration diverged. Check
branchFromThoughtfield
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.
- 1mo ago First seen · 184 lines · 97 tokens per session scan A a7e485ce0a25
thoughtbox:session-review is a skill published in the GitHub repository Kastalien-Research/thoughtbox (65 stars, last pushed 3mo ago), licensed MIT. It adds 97 tokens to every session and 1,377 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-30.
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