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session-manager

session-manager is a skill for Claude Code from cicababba/claude-plugins-marketplace. It costs 54 tokens per session (1,016 once invoked), scanned A, original, MIT.

A tracker for the lifecycle of development sessions stored under a project’s session directory. It manages session records, the pointer to the current session, statuses, timestamps, and duration.

In plain words
What is it for?
Use it to create, load, update, or close development sessions and maintain their metadata.
Why use it?
It keeps session state in one place so other development commands can reliably find and update the active session.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the dev-workflow-automation plugin — 9 skills, 4 commands, 11 agents shipped together

not rated 3repo 9mo ago A scan 54 tokens original MIT

Good fit Use it to create, load, update, or close development sessions and maintain their metadata.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cicababba/claude-plugins-marketplace/session-manager
View source ↗ cicababba/claude-plugins-marketplace
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 cicababba/claude-plugins-marketplace --skill session-manager
Clone the repo
git clone --depth 1 https://github.com/cicababba/claude-plugins-marketplace

Made for: Claude Code.

Or install dev-workflow-automation, the plugin that ships this one along with the rest of its 9 skills, 4 commands, 11 agents.

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 session-manager

README.md
[![agentmods](https://agentmods.dev/badge/skills/cicababba/claude-plugins-marketplace/session-manager/github.svg)](https://agentmods.dev/skills/cicababba/claude-plugins-marketplace/session-manager)
Your own site
<a href="https://agentmods.dev/skills/cicababba/claude-plugins-marketplace/session-manager"><img src="https://agentmods.dev/badge/skills/cicababba/claude-plugins-marketplace/session-manager/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 session-manager

Your own site · 80×15
<a href="https://agentmods.dev/skills/cicababba/claude-plugins-marketplace/session-manager"><img src="https://agentmods.dev/badge/skills/cicababba/claude-plugins-marketplace/session-manager.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,016 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 original No closer match found 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 $0.00054 $0.01016
Opus 5 $0.00027 $0.00508
Sonnet 5 $0.00011 $0.00203
Haiku 4.5 $0.00005 $0.00102

Measured 9d ago against content hash 22093c089ff8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

session-manager 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 9d 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.

dev-workflow-automation/skills/session-manager/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Session Manager

This skill is the single source of truth for development session lifecycle management.

When to Use

  • When creating a new development session
  • When loading an existing session (by path or by filtering Status)
  • When updating session metadata (Status, Last Updated, End Time, Duration)
  • When closing a session and clearing .current-session
  • At the start of /init, /run, or /end commands

Responsibilities

  • Create session directory: .claude/dev-sessions/YYYY-MM-DD-HHMM-${slug}/
  • Initialize/update session.md headers (Session Overview section only)
  • Read and update .claude/dev-sessions/.current-session
  • Load existing sessions (with optional Status filtering)
  • Update in session.md:
    • Status: PLANNING, READY, IN_PROGRESS, COMPLETED, PARTIALLY_COMPLETED, FAILED
    • Start Time: When session is created
    • Last Updated: On any modification
    • End Time: When session is closed
    • Duration: Calculated from Start Time to End Time
  • Close session and clear .current-session content (file remains)

MUST NOT

  • Generate context analysis, specification, plan, documentation, or code
  • Modify any source code files
  • Read or write plan.md content (only track its existence)
  • Execute development steps
  • Trigger sub-agents

Process

Creating a New Session

  1. Generate slug from task description (lowercase, hyphens, max 50 chars)

  2. Generate timestamp: YYYY-MM-DD-HHMM

  3. Create directory: .claude/dev-sessions/{timestamp}-{slug}/

  4. Initialize session.md with Session Overview:

    ## Session Overview

**Start Time:** [YYYY-MM-DD HH:MM AM/PM] **Last Updated:** [YYYY-MM-DD HH:MM AM/PM] **Status:** PLANNING **Progress:** 0/0 steps completed **Task:** [task description] **Duration:** **End Time:**

  5. Write session path to .claude/dev-sessions/.current-session

Loading an Existing Session

  1. Read .claude/dev-sessions/.current-session
  2. If file contains a valid path:
    • Verify the session directory exists
    • Return the session path
  3. If file is empty or path invalid:
    • Scan .claude/dev-sessions/ for session directories
    • For each directory, read session.md and extract Status
    • Filter by requested status (e.g., READY, PLANNING, IN_PROGRESS)
    • Present filtered list to user for selection
    • Update .current-session with selected path
    • Return the session path

Read the full file on GitHub · 114 lines

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. 9d ago First seen · 114 lines · 54 tokens per session scan A 22093c089ff8

Subscribe to this mod's changes

session-manager is a skill published in the GitHub repository cicababba/claude-plugins-marketplace (3 stars, last pushed 9mo ago), licensed MIT. It adds 54 tokens to every session and 1,016 once invoked, about $0.0003 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.

Project management
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