mt-save

A command for saving the current Claude Code session as a named bookmark.

In plain words
What is it for?
Use it to save a session under a chosen name and get instructions for resuming it from a terminal.
Why use it?
It helps you return to a session later without losing track of where you stopped.

Command

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.

agentmods
npx agentmods add commands/v3velev/memorythreads/mt-save
Clone the repo
git clone --depth 1 https://github.com/v3velev/memorythreads
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 126 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00012 $0.00126
Opus 5 $0.00006 $0.00063
Sonnet 5 $0.00002 $0.00025
Haiku 4.5 $0.00001 $0.00013

Measured yesterday against content hash b8578d4be5f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mt-save 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 yesterday.

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/mt-save.md · 16 lines

What it actually says

Use the save_thread MCP tool to bookmark this session under the name $ARGUMENTS.

You will need to derive these arguments:

  • name: $ARGUMENTS (the bookmark name)
  • session_id: parse from your current transcript_path (the JSONL filename without .jsonl)
  • project_path: your current working directory

After saving, confirm to the user with:

  • The bookmark name
  • The instruction: "Resume from any terminal with mt launch"
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. yesterday First seen · 16 lines · 12 tokens per session scan A b8578d4be5f3

Subscribe to this mod's changes

mt-save is a command published in the GitHub repository v3velev/memorythreads (3 stars, last pushed 2mo ago), licensed MIT. It adds 12 tokens to every session and 126 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 2026-08-31.