Fetchpriority Attribute
thedaviddias/Front-End-Checklist
A skill your agent uses when optimising Largest Contentful Paint (LCP), reducing render-blocking resource contention, or fine-tuning resource loading order in the critical rendering path.
A skill your agent uses to durably record a hard constraint or invariant that the work must respect.
Install Codememory Mark Constraint
$ npx skills add harrylettering/CodeMemory --skill codememory-mark-constraint -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install harrylettering/CodeMemory codememory-mark-constraint --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/harrylettering/CodeMemory.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/codememory-mark-constraint .claude/skills/codememory-mark-constraint && 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 "codememory-mark-constraint" agent skill from https://github.com/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraint into .claude/skills/codememory-mark-constraint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codememory-mark-constraint", 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/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraintType 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 harrylettering/CodeMemory --skill codememory-mark-constraint -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install harrylettering/CodeMemory codememory-mark-constraint --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harrylettering/CodeMemory.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/codememory-mark-constraint .agents/skills/codememory-mark-constraint && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "codememory-mark-constraint" agent skill from https://github.com/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraint into .agents/skills/codememory-mark-constraint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codememory-mark-constraint", 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 harrylettering/CodeMemory --skill codememory-mark-constraint -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install harrylettering/CodeMemory codememory-mark-constraint --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harrylettering/CodeMemory.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/codememory-mark-constraint .cursor/skills/codememory-mark-constraint && 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 "codememory-mark-constraint" agent skill from https://github.com/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraint into .cursor/skills/codememory-mark-constraint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codememory-mark-constraint", 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/harrylettering/CodeMemory.git --path skills/codememory-mark-constraint--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 harrylettering/CodeMemory --skill codememory-mark-constraint -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install harrylettering/CodeMemory codememory-mark-constraint --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harrylettering/CodeMemory.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/codememory-mark-constraint .gemini/skills/codememory-mark-constraint && 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 "codememory-mark-constraint" agent skill from https://github.com/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraint into .gemini/skills/codememory-mark-constraint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codememory-mark-constraint", 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 harrylettering/CodeMemory codememory-mark-constraintInstalls 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 harrylettering/CodeMemory --skill codememory-mark-constraint -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/harrylettering/CodeMemory.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/codememory-mark-constraint .github/skills/codememory-mark-constraint && 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 "codememory-mark-constraint" agent skill from https://github.com/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraint into .github/skills/codememory-mark-constraint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codememory-mark-constraint", 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 harrylettering/CodeMemory --skill codememory-mark-constraint -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install harrylettering/CodeMemory codememory-mark-constraint --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harrylettering/CodeMemory.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/codememory-mark-constraint .opencode/skills/codememory-mark-constraint && 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 "codememory-mark-constraint" agent skill from https://github.com/harrylettering/CodeMemory/tree/main/skills/codememory-mark-constraint into .opencode/skills/codememory-mark-constraint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codememory-mark-constraint", 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
codememory-mark-constraint- GitHub stars
- 158
- Token cost
- ~793 tokens
- SKILL.md length
- 291 words
- Files
- 1
- Skills in repo
- 5
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses to durably record a hard constraint or invariant that the work must respect.
- Durably record a hard constraint
- SKILL.md covers When to Use, How to Invoke and Authoring Guidance
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Invariant that the work must respect
What it does
Codememory Mark Constraint is an agent skill from harrylettering/CodeMemory. Use this skill to durably record a hard constraint or invariant that the work must respect. Invoke when the user states a must-not-break rule, a compatibility boundary, a performance budget, a security/compliance requirement, or any other guardrail that should outlive compaction. Do NOT invoke for soft preferences, style nudges, or constraints already captured earlier in the session.
Its SKILL.md is about 790 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 AI & LLM Engineering, covering Web performance and SOC 2 and security compliance. The repository describes itself as: A memory layer for Claude Code.
When your agent uses it
- Durably record a hard constraint
- Invariant that the work must respect
- States a must-not-break rule
- A compatibility boundary
Example prompts
- “/codememory-mark-constraint”
What it can do on your machine
Read from SKILL.md and the folder at commit b7e96f7. 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 bash).
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
Codememory Mark Constraint loads about 793 tokens when it runs. Until then it costs about 103 tokens; SKILL.md has 291 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 291 words (~793 tokens).
“Persists a single hard constraint into the CodeMemory memory store via the per-session daemon. The result is a Memory Node tagged constraint + requirement that future turns can consult before making decisions.”
- name
- codememory-mark-constraint
- version
- 0.1.0
Files
Just SKILL.md in skills/codememory-mark-constraint of harrylettering/CodeMemory.
Open the folder on GitHubat commit b7e96f7
Compare with similar skills
Codememory Mark Constraint 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 |
|---|---|---|---|---|---|---|
| Codememory Mark Constraint this skillharrylettering/CodeMemory | 158 | — | ~793 | Automated safety check: Pass | None | |
| Fetchpriority Attributethedaviddias/Front-End-Checklist | 74k | — | ~535 | Automated safety check: Pass | MIT | |
| Assemblyai Reference Architecturejeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Reduce Bundle Sizekcsujeet/ilamy-calendar | 351 | — | ~2.9k | Automated safety check: Pass | MIT | |
| Prompt Engineer Toolkitalirezarezvani/claude-skills | 28k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Performanceyonatangross/orchestkit | 289 | — | ~3.5k | Automated safety check: Pass | MIT |
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More from harrylettering/CodeMemory
Codememory Context Skill
harrylettering/CodeMemory
This skill should be used when the user asks questions about past conversations, wants to recall previous discussions, references "earlier", "before", "previous", "what did we say", "remember when"…
Codememory Mark Decision
harrylettering/CodeMemory
A skill your agent uses to durably record a non-trivial design or implementation decision so it survives compaction and can be recalled in future sessions.
Codememory Mark Task
harrylettering/CodeMemory
A skill your agent uses to durably record the current task or goal so future turns (and future sessions) can recall what we are trying to accomplish.
Codememory Summarization Skill
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This skill should be used when creating conversation summaries for CodeMemory, discussing summarization quality, optimizing DAG structure, or working with the compaction system.
Related
Questions about Codememory Mark Constraint
What does Codememory Mark Constraint do?
A skill your agent uses to durably record a hard constraint or invariant that the work must respect. Codememory Mark Constraint is an agent skill from harrylettering/CodeMemory. Use this skill to durably record a hard constraint or invariant that the work must respect.
When should I use Codememory Mark Constraint?
Codememory Mark Constraint fits situations like: durably record a hard constraint; invariant that the work must respect; states a must-not-break rule; A compatibility boundary.
How do I install Codememory Mark Constraint in Claude Code?
Run `npx skills add harrylettering/CodeMemory --skill codememory-mark-constraint -a claude-code`. Or copy the skill folder (skills/codememory-mark-constraint in harrylettering/CodeMemory) into .claude/skills/codememory-mark-constraint in your project. Claude Code loads it when a task matches its description.
How do I install Codememory Mark Constraint in Codex?
Run `npx skills add harrylettering/CodeMemory --skill codememory-mark-constraint -a codex`. Or copy the skill folder (skills/codememory-mark-constraint in harrylettering/CodeMemory) into .agents/skills/codememory-mark-constraint in your project. Codex loads it when a task matches its description.
Can I use Codememory Mark Constraint 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 harrylettering/CodeMemory --skill codememory-mark-constraint -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codememory-mark-constraint, .gemini/skills/codememory-mark-constraint, .github/skills/codememory-mark-constraint and .opencode/skills/codememory-mark-constraint in your project.
What does Codememory Mark Constraint need to run?
SKILL.md names no scripts, command-line tools or credentials: Codememory Mark Constraint is instructions for the agent only.
Does Codememory Mark Constraint 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 Codememory Mark Constraint 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 Codememory Mark Constraint use?
No licence was found for Codememory Mark Constraint or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Codememory Mark Constraint use?
About 793 tokens (SKILL.md is roughly 3.2k 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 Codememory Mark Constraint?
Skills that share tags, products or a category with Codememory Mark Constraint: Fetchpriority Attribute (thedaviddias/Front-End-Checklist, 74k stars), Assemblyai Reference Architecture (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Reduce Bundle Size (kcsujeet/ilamy-calendar, 351 stars) and Prompt Engineer Toolkit (alirezarezvani/claude-skills, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Codememory Mark Constraint?
harrylettering (a GitHub user) maintains it in harrylettering/CodeMemory, which has 158 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 5, 2026.
Source: harrylettering/CodeMemory on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.