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 dentiny/kon --skill session-retrogit clone --depth 1 https://github.com/dentiny/konWrote 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/dentiny/kon/session-retro)<a href="https://agentmods.dev/skills/dentiny/kon/session-retro"><img src="https://agentmods.dev/badge/skills/dentiny/kon/session-retro/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/dentiny/kon/session-retro"><img src="https://agentmods.dev/badge/skills/dentiny/kon/session-retro.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 | $0.00056 | $0.00946 |
| Opus 5.5 | $0.00022 | $0.00378 |
| Sonnet 5.5 | $0.00011 | $0.00189 |
| Haiku 4.5 | $0.00006 | $0.00095 |
Grade A, and why
session-retro 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 — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Session Retro
Owner: orchestrator (no Task subagents)
Consumers: /kon:team, /kon:quick, /kon:design, /kon:debug, /kon:gc, /kon:address-comments. Optional manual re-run: /kon:retro.
Core principles (always): follow skills/core-principles — propose only evidence-backed lessons; don't invent retro insights.
Save paths
Saving is always:
- Mid-session — Mio/Yui
## Memory propose→ confirm → write - End of pipeline — retro (below) → confirm → write
To browse stored entries, read the indexes directly:
cat ~/.kon/public/memory/MEMORY.md
cat ~/.kon/projects/<repo-name>/memory/MEMORY.md
When to run
Default session close for pipeline commands (after work + Mio approve + /kon:summarize):
summarize → retro → user /kon:finish or dashboard ✓
Skip retro for read-only commands: /kon:ask, /kon:review, /kon:review-pr, /kon:research, /kon:describe-issue, /kon:todo.
User may say skip retro to close without proposing.
Candidate sources (≤ 5)
Scan conversation + session artefacts:
- Explicit user prefs / feedback ("always integration tests", "shorter reviews")
- Conventions agreed this session (commit style, test naming)
- Lessons / pitfalls ("lib X differs on macOS")
- Skipped
## Memory proposesections from Mio/Yui this session (re-offer) - Plan
## Honoured memoryor debug notes worth persisting
Exclude: one-off task facts, ticket numbers, secrets, .env values, API keys.
Flow
- Collect ≤ 5 candidates — rank by reuse signal; drop lowest if > 5.
- Zero candidates → print "Nothing to propose for memory." and exit retro.
- One at a time — for each candidate:
- Print
Candidate i/N: quote + inferredtype,name,description, suggested scope (publicorrepo). - Ask:
Save to public/Save to repo/Edit/Skip/Done with retro. - On save/edit → run
skills/memory-propose-confirmwrite steps.
- Print
- Summary — list saved entries with scope, or "Retro complete — nothing saved."
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 · 86 lines · 56 tokens per session scan A d385d623e427
session-retro is a skill published in the GitHub repository dentiny/kon (3 stars, last pushed 3mo ago), licensed MIT. It adds 56 tokens to every session and 946 once invoked, about $0.0002 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 2026-08-31.
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