context-mem-history

context-mem-history is a command for Claude Code from JubaKitiashvili/context-mem. It costs 19 tokens per session (494 once invoked), scanned A, original, MIT.

A command that lists earlier coding-agent sessions for the current project, including their summaries, estimated token use, dates, and links between sessions.

In plain words
What is it for?
Use it to review previous session summaries, check their estimated usage and dates, and understand the sequence of handoffs for the project.
Why use it?
When work spans multiple sessions, it can be hard to recall what was done and how one session continued another. This provides a compact project history.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the context-mem plugin — 1 skill, 6 commands, 5 hooks, 1 MCP server shipped together

Good fit Use it to review previous session summaries, check their estimated usage and dates, and understand the sequence of handoffs for the project.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/jubakitiashvili/context-mem/context-mem-history
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.

Clone the repo
git clone --depth 1 https://github.com/JubaKitiashvili/context-mem

Made for: Claude Code.

Or install context-mem, the plugin that ships this one along with the rest of its 1 skill, 6 commands, 5 hooks, 1 MCP server.

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 context-mem-history

README.md
[![agentmods](https://agentmods.dev/badge/commands/jubakitiashvili/context-mem/context-mem-history/github.svg)](https://agentmods.dev/commands/jubakitiashvili/context-mem/context-mem-history)
Your own site
<a href="https://agentmods.dev/commands/jubakitiashvili/context-mem/context-mem-history"><img src="https://agentmods.dev/badge/commands/jubakitiashvili/context-mem/context-mem-history/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 context-mem-history

Your own site · 80×15
<a href="https://agentmods.dev/commands/jubakitiashvili/context-mem/context-mem-history"><img src="https://agentmods.dev/badge/commands/jubakitiashvili/context-mem/context-mem-history.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 494 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 $0.00019 $0.00494
Opus 5 $0.00010 $0.00247
Sonnet 5 $0.00004 $0.00099
Haiku 4.5 $0.00002 $0.00049

Measured 11d ago against content hash d331d57b67bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

context-mem-history 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 11d 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.

commands/context-mem-history.md · 57 lines

What it actually says

Show the session chain history for this project.

  1. Query the database for chain history:

    node -e "
    const Database = require('better-sqlite3');
    const db = new Database('.context-mem/store.db', { readonly: true });
    
    try {
      const tableExists = db.prepare(\"SELECT name FROM sqlite_master WHERE type='table' AND name='session_chains'\").get();
      if (!tableExists) {
        console.log('No session chain data. Session chaining is available in context-mem v2.1.0+.');
        process.exit(0);
      }
    
      const chains = db.prepare('SELECT * FROM session_chains WHERE project_path = ? ORDER BY created_at DESC LIMIT 20').all(process.cwd());
    
      if (!chains.length) {
        console.log('No session history for this project yet.');
        process.exit(0);
      }
    
      console.log(JSON.stringify(chains.map(c => ({
        session_id: c.session_id.slice(0,8),
        summary: c.summary || 'no summary',
        tokens: c.token_estimate ? Math.round(c.token_estimate / 1000) + 'K' : '?',
        reason: c.handoff_reason,
        created: c.created_at,
        parent: c.parent_session ? c.parent_session.slice(0,8) : null
      }))));
    } catch (e) {
      console.log('Error reading chain history: ' + e.message);
    }
    db.close();
    "
    
  2. Present results as a timeline:

    context-mem session history
    ───────────────────────────
    Session 3 (current) — 1h 23m, ~340K tokens
      > Session handoff design, PreCompact hook
    Session 2 — 45m, ~280K tokens
      > Multi-agent system, v1.4.0 release
    Session 1 — 2h 10m, ~890K tokens
      > Knowledge graph, proactive injection, v1.2.0-1.3.0
    
  3. If the user asks about a specific session, offer to restore it using the restore_session MCP tool.

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. 11d ago First seen · 57 lines · 19 tokens per session scan A d331d57b67bb

Subscribe to this mod's changes

context-mem-history is a command published in the GitHub repository JubaKitiashvili/context-mem (19 stars, last pushed 4mo ago), licensed MIT. It adds 19 tokens to every session and 494 once invoked, about $0.0001 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 2026-08-30.