MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
Run a one-call pre-flight check on a single existing symbol before editing it: blast radius, co-change partners, complexity, 30-day churn, and verification checklist, then check Cortex decision…
Install Memtrace Preflight
$ npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-preflight --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ 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-preflight .claude/skills/memtrace-preflight && rm -rf skills-srcUse ~/.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/
Install the "memtrace-preflight" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflight into .claude/skills/memtrace-preflight/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-preflight", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflightType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-preflight --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-preflight .agents/skills/memtrace-preflight && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "memtrace-preflight" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflight into .agents/skills/memtrace-preflight/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-preflight", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-preflight --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-preflight .cursor/skills/memtrace-preflight && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "memtrace-preflight" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflight into .cursor/skills/memtrace-preflight/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-preflight", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/syncable-dev/memtrace-public.git --path plugins/memtrace-skills/skills/memtrace-preflight--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-preflight --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-preflight .gemini/skills/memtrace-preflight && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "memtrace-preflight" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflight into .gemini/skills/memtrace-preflight/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-preflight", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install syncable-dev/memtrace-public memtrace-preflightInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-preflight .github/skills/memtrace-preflight && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "memtrace-preflight" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflight into .github/skills/memtrace-preflight/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-preflight", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-preflight --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-preflight .opencode/skills/memtrace-preflight && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "memtrace-preflight" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-preflight into .opencode/skills/memtrace-preflight/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-preflight", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
memtrace-preflight- GitHub stars
- 486
- Token cost
- ~1k tokens
- SKILL.md length
- 458 words
- Files
- 1
- Skills in repo
- 27
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Run a one-call pre-flight check on a single existing symbol before editing it: blast radius, co-change partners, complexity, 30-day churn, and verification checklist, then check Cortex decision…
- Works in 4 steps: Run the pre-flight check before touching… → Read the checklist — it is generated… → Treat co-change partners as part of the… → …
- Agent Workflows work in your project
- SKILL.md covers Overview, Quick Reference, Steps and Verdict guidance, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Memtrace Preflight is an agent skill from syncable-dev/memtrace-public. Run a one-call pre-flight check on a single existing symbol before editing it: blast radius, co-change partners, complexity, 30-day churn, and verification checklist, then check Cortex decision memory for rationale/bans when intent may matter. Use before modifying any existing function or symbol you did not just write. Do not start editing a non-trivial existing function without pre-flight plus decision-memory recall/provenance; Memtrace knows the dependency graph, change history, and recorded decisions.
Its SKILL.md is about 1k 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 Agent Workflows. 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
- Agent Workflows work in your project
Example prompts
- “/memtrace-preflight”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Run the pre-flight check before touching the symbol
- Read the checklist — it is generated from the graph, not boilerplate
- Treat co-change partners as part of the change
- After the edit, close the loop
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.
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 Preflight loads about 1k tokens when it runs. Until then it costs about 132 tokens; SKILL.md has 458 words of instructions outside code blocks.
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 458 words (~1,020 tokens).
“Pre-flight check: the two minutes before an edit that prevent the bug. One preflight_check call composes the dependency graph, the bi-temporal change history, and the complexity metrics into an actionable radar for a single symbol.”
- name
- memtrace-preflight
Files
Just SKILL.md in plugins/memtrace-skills/skills/memtrace-preflight of syncable-dev/memtrace-public.
Open the folder on GitHubat commit 3a3084d
Compare with similar skills
Memtrace Preflight 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Memtrace Preflight this skillsyncable-dev/memtrace-public | 486 | — | ~1k | Automated safety check: Pass | Custom licence | |
| MCP Server Builderanthropics/skills | 180k | 62 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 37k | 11 repos | ~4.1k | Automated safety check: Notes | Apache-2.0 | |
| Using Superpowersfarm-fe/farm | 5.6k | 34 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Executing Plans Inlineobra/superpowers | 296k | 2 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 37k | 8 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 |
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Using Superpowers
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Executing Plans Inline
obra/superpowers
Has the agent carry out an implementation plan itself, task by task in the current session, keeping a ledger, proving each step with a test and ending with one whole-branch review.
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Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes.
Memtrace Code Review
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Review GitHub pull requests with Memtrace's local graph-backed review engine.
Memtrace Codebase Exploration
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Map an indexed source-code repo into a structured overview — scale, communities, central symbols, execution flows, API surface, recent activity.
Memtrace Continuous Memory
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Keep the Memtrace index fresh while editing by watching a repo for live, incremental re-indexing.
Memtrace Decision Memory
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Use Cortex decision memory through the normal Memtrace MCP tools.
Related
Categories
Questions about Memtrace Preflight
What does Memtrace Preflight do?
Run a one-call pre-flight check on a single existing symbol before editing it: blast radius, co-change partners, complexity, 30-day churn, and verification checklist, then check Cortex decision…. Memtrace Preflight is an agent skill from syncable-dev/memtrace-public. Run a one-call pre-flight check on a single existing symbol before editing it: blast radius, co-change partners, complexity, 30-day churn, and verification checklist, then check Cortex decision memory for rationale/bans when intent may matter.
When should I use Memtrace Preflight?
Memtrace Preflight fits situations like: agent Workflows work in your project.
How do I install Memtrace Preflight in Claude Code?
Run `npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a claude-code`. Or copy the skill folder (plugins/memtrace-skills/skills/memtrace-preflight in syncable-dev/memtrace-public) into .claude/skills/memtrace-preflight in your project. Claude Code loads it when a task matches its description.
How do I install Memtrace Preflight in Codex?
Run `npx skills add syncable-dev/memtrace-public --skill memtrace-preflight -a codex`. Or copy the skill folder (plugins/memtrace-skills/skills/memtrace-preflight in syncable-dev/memtrace-public) into .agents/skills/memtrace-preflight in your project. Codex loads it when a task matches its description.
Can I use Memtrace Preflight 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-preflight -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-preflight, .gemini/skills/memtrace-preflight, .github/skills/memtrace-preflight and .opencode/skills/memtrace-preflight in your project.
What does Memtrace Preflight need to run?
SKILL.md names no scripts, command-line tools or credentials: Memtrace Preflight is instructions for the agent only.
Does Memtrace Preflight 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 Preflight 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 Preflight use?
Memtrace Preflight 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 Preflight use?
About 1k tokens (SKILL.md is roughly 4.1k 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 Preflight?
Skills that share tags, products or a category with Memtrace Preflight: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 37k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 296k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Memtrace Preflight?
syncable-dev (a GitHub organization) maintains it in syncable-dev/memtrace-public, which has 486 GitHub stars. The repository holds 27 skills in this directory. The repository was last updated on October 6, 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.