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 mracal/vibe-engineering --skill session-context-flushgit clone --depth 1 https://github.com/mracal/vibe-engineeringWrote 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/mracal/vibe-engineering/session-context-flush)<a href="https://agentmods.dev/skills/mracal/vibe-engineering/session-context-flush"><img src="https://agentmods.dev/badge/skills/mracal/vibe-engineering/session-context-flush/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/mracal/vibe-engineering/session-context-flush"><img src="https://agentmods.dev/badge/skills/mracal/vibe-engineering/session-context-flush.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 | $0.00038 | $0.00481 |
| Opus 5.5 | $0.00015 | $0.00192 |
| Sonnet 5.5 | $0.00008 | $0.00096 |
| Haiku 4.5 | $0.00004 | $0.00048 |
Grade A, and why
vibe-session-context-flush 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.
This is a copy
100% identical to vibe-session-context-flush — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
vibe-session-context-flush
Context windows have limits. This skill manages the transition gracefully instead of letting context degrade silently.
When to Use This Skill
- You notice responses getting less coherent or losing track of earlier context
- You've been working for a long session with many file reads
- The system indicates context compression is occurring
- Before starting a new major subtask in a long session
When NOT to Use This Skill
- Short sessions with plenty of context room
- When the user wants to continue without interruption
- When you just started the session
Steps
-
Assess current context — What's consuming context?
- Large file reads that are no longer relevant
- Completed subtask details that can be summarized
- Exploration results that led to dead ends
- Verbose tool outputs
-
Triage into:
- Keep — Still actively needed (current task state, open files, error messages)
- Summarize — Completed work (compress to 2-3 sentences each)
- Drop — No longer relevant (old file contents, superseded plans)
-
Create compact state:
## Session State (Flushed) **Current task**: [what we're doing] **Branch**: [current branch] **Modified files**: [list] **Completed**: [summary of done work] **Key decisions**: [1-liner each] **Next step**: [immediate next action] **Important context**: [anything that must be preserved] -
Offer to the user — "Context is getting large. Here's a compact state. Want me to continue with this summary, or start a new session with the handover doc?"
Output Format
Context Flush Summary
Context pressure: High / Medium Items summarized: X Items dropped: Y
[Compact state block as above]
Recommendation: Continue with summary / Start new session with /vibe-handover-doc
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 · 62 lines · 38 tokens per session scan A b84168a95a4e
vibe-session-context-flush is a skill published in the GitHub repository mracal/vibe-engineering (3 stars, last pushed 7d ago), licensed MIT. It adds 38 tokens to every session and 481 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to vibe-session-context-flush, differing in 0 lines, and is treated as a copy.
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