vibe-session-context-flush

vibe-session-context-flush is a skill for Claude Code from mracal/vibe-engineering. It costs 38 tokens per session (481 once invoked), scanned A, a copy of vibe-session-context-flush, MIT.

A session-management skill that condenses earlier conversation details when the available context is nearly full, while keeping the information needed to continue working.

In plain words
What is it for?
Use it during long sessions, after many file reads, or when context compression is approaching. It helps preserve the current task, relevant findings, open files, and next steps.
Why use it?
Long coding sessions can make an agent lose track of earlier decisions, files, or errors. This reduces that loss by creating a compact summary of the active work.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Good fit Use it during long sessions, after many file reads, or when context compression is approaching. It helps preserve the current task, relevant findings, open files, and next steps.

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Install with agentmods
npx agentmods add skills/mracal/vibe-engineering/session-context-flush
Install

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.

Any agent
npx skills add mracal/vibe-engineering --skill session-context-flush
Clone the repo
git clone --depth 1 https://github.com/mracal/vibe-engineering

Made for: Claude Code.

Wrote 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.

agentmods badge for vibe-session-context-flush

README.md
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Your own site
<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.

agentmods 80×15 button for vibe-session-context-flush

Your own site · 80×15
<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>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 481 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured 1mo ago against content hash b84168a95a4e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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.

Origin

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.

skills/session-context-flush/SKILL.md · 62 lines

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

  1. 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
  2. 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)
  3. 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]
    
  4. 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

Changes

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.

  1. 1mo ago First seen · 62 lines · 38 tokens per session scan A b84168a95a4e

Subscribe to this mod's changes

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.