Agent skill

Memtrace Evolution

by syncable-dev in syncable-dev/memtrace-public

Trace source-code change history from Memtrace's symbol-level temporal memory.

Custom licenceAuto-check passedDevelopment

Install Memtrace Evolution

skills CLI
$ npx skills add syncable-dev/memtrace-public --skill memtrace-evolution -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install syncable-dev/memtrace-public memtrace-evolution --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-evolution .claude/skills/memtrace-evolution && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
memtrace-evolution
GitHub stars
487
Token cost
~1.7k tokens
SKILL.md length
541 words
Files
1
Skills in repo
27
Repo updated
First seen
Licence
Custom licence

At a glance

Trace source-code change history from Memtrace's symbol-level temporal memory.

  • Works in 6 steps: Get repo_id → Choose the time window → Choose the mode → …
  • The user asks about change history
  • SKILL.md covers Overview, Required parameters — read…, Query modes — only these four… and Steps, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Memtrace Evolution is an agent skill from syncable-dev/memtrace-public. Trace source-code change history from Memtrace's symbol-level temporal memory. Use when the user asks about change history, recent modifications, what changed since a date, symbol timeline, evolution, unexpected changes, or incident timelines. Do not use git log, git diff, Grep, or manual file search to reconstruct history. Do NOT use for current-state architecture overviews (use memtrace-codebase-exploration) or for replaying one commit/save's graph diff (use memtrace-episode-replay).

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Git workflow. It works with Git. The repository describes itself as: Structural memory for AI coding agents. Bi-temporal graph, MCP-native, zero LLM calls. Cursor · Claude Code · Codex · DeepSeek Harness · Hermes · VS Code · Windsurf.

When your agent uses it

  • The user asks about change history
  • Recent modifications
  • What changed since a date
  • Symbol timeline

Example prompts

  • “/memtrace-evolution”

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Get repo_id
  2. Choose the time window
  3. Choose the mode
  4. Execute
  5. Interpret results
  6. Drill deeper

What it can do on your machine

Read from SKILL.md and the folder at commit 3a3084d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are json).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Memtrace Evolution loads about 1.7k tokens when it runs. Until then it costs about 127 tokens; SKILL.md has 541 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~127
When it runs · the whole SKILL.md, loaded when a task matches
~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 541 words (~1,679 tokens).

“Temporal analysis for "what changed in this repo between two points in time?" Works on both git commits and uncommitted working-tree saves.”

— opening of SKILL.md by syncable-dev, Custom licence
name
memtrace-evolution

Read the full SKILL.md on GitHub

Files

Just SKILL.md in plugins/memtrace-skills/skills/memtrace-evolution of syncable-dev/memtrace-public.

Open the folder on GitHubat commit 3a3084d

Compare with similar skills

Memtrace Evolution next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Memtrace Evolution compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Memtrace Evolution this skillsyncable-dev/memtrace-public487—~1.7kAutomated safety check: PassCustom licence
Finishing a Development Branchobra/superpowers296k5 repos~1.9kAutomated safety check: PassMIT
Code Design Rationale Investigatorcursor/plugins10k9 repos~2.6kAutomated safety check: PassNone
Contributor-First PR MergeHKUDS/OpenHarness16k1 repos~847Automated safety check: PassMIT
Migrate Internal Package into GhostTryGhost/Ghost55k—~3.8kAutomated safety check: PassMIT
Create Pull Requestcline/cline70k1 repos~1.6kAutomated safety check: PassApache-2.0

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More from syncable-dev/memtrace-public

All 27 skills in this repo
  • Memtrace Change Impact Analysis

    syncable-dev/memtrace-public

    Compute what a planned source-code change will break — blast radius, affected processes, cross-repo callers, temporal stability, and Cortex decision-memory constraints — and produce a risk-rated…

    487 GitHub stars~1.4k tokensUpdated today
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  • Memtrace Cochange

    syncable-dev/memtrace-public

    Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes.

    487 GitHub stars~961 tokensUpdated today
    Auto-check passed
  • Memtrace Code Review

    syncable-dev/memtrace-public

    Review GitHub pull requests with Memtrace's local graph-backed review engine.

    487 GitHub stars~818 tokensUpdated today
    Auto-check passed
  • Memtrace Codebase Exploration

    syncable-dev/memtrace-public

    Map an indexed source-code repo into a structured overview — scale, communities, central symbols, execution flows, API surface, recent activity.

    487 GitHub stars~1.3k tokensUpdated today
    Auto-check passed
  • Memtrace Continuous Memory

    syncable-dev/memtrace-public

    Keep the Memtrace index fresh while editing by watching a repo for live, incremental re-indexing.

    487 GitHub stars~645 tokensUpdated today
    Auto-check passed
  • Memtrace Decision Memory

    syncable-dev/memtrace-public

    Use Cortex decision memory through the normal Memtrace MCP tools.

    487 GitHub stars~1.9k tokensUpdated today
    Auto-check passed

Works with

Categories

Questions about Memtrace Evolution

What does Memtrace Evolution do?

Trace source-code change history from Memtrace's symbol-level temporal memory. Memtrace Evolution is an agent skill from syncable-dev/memtrace-public. Trace source-code change history from Memtrace's symbol-level temporal memory.

When should I use Memtrace Evolution?

Memtrace Evolution fits situations like: the user asks about change history; recent modifications; what changed since a date; symbol timeline.

How do I install Memtrace Evolution in Claude Code?

Run `npx skills add syncable-dev/memtrace-public --skill memtrace-evolution -a claude-code`. Or copy the skill folder (plugins/memtrace-skills/skills/memtrace-evolution in syncable-dev/memtrace-public) into .claude/skills/memtrace-evolution in your project. Claude Code loads it when a task matches its description.

How do I install Memtrace Evolution in Codex?

Run `npx skills add syncable-dev/memtrace-public --skill memtrace-evolution -a codex`. Or copy the skill folder (plugins/memtrace-skills/skills/memtrace-evolution in syncable-dev/memtrace-public) into .agents/skills/memtrace-evolution in your project. Codex loads it when a task matches its description.

Can I use Memtrace Evolution in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add syncable-dev/memtrace-public --skill memtrace-evolution -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/memtrace-evolution, .gemini/skills/memtrace-evolution, .github/skills/memtrace-evolution and .opencode/skills/memtrace-evolution in your project.

What does Memtrace Evolution need to run?

SKILL.md names no scripts, command-line tools or credentials: Memtrace Evolution is instructions for the agent only.

Does Memtrace Evolution access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Memtrace Evolution safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Memtrace Evolution use?

Memtrace Evolution has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Memtrace Evolution use?

About 1.7k tokens (SKILL.md is roughly 6.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Memtrace Evolution?

Skills that share tags, products or a category with Memtrace Evolution: Finishing a Development Branch (obra/superpowers, 296k stars), Code Design Rationale Investigator (cursor/plugins, 10k stars), Contributor-First PR Merge (HKUDS/OpenHarness, 16k stars) and Migrate Internal Package into Ghost (TryGhost/Ghost, 55k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Memtrace Evolution?

syncable-dev (a GitHub organization) maintains it in syncable-dev/memtrace-public, which has 487 GitHub stars. The repository holds 27 skills in this directory. The repository was last updated on October 8, 2026.

Source: syncable-dev/memtrace-public on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.