Content Research Writer
weapp-tailwindcss/weapp-tailwindcss
Assists in writing high-quality content by conducting research, adding citations, improving hooks, iterating on outlines, and providing real-time feedback on each section.
Trace a claim about web spec behaviour through the algorithm call chain and produce a Bugzilla-ready markdown trace ending in a REACHED / NOT REACHED / INCONCLUSIVE verdict.
Install Spec Trace
$ npx skills add BrowserWorks/waterfox-android --skill spec-trace -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install BrowserWorks/waterfox-android spec-trace --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/BrowserWorks/waterfox-android.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/spec-trace .claude/skills/spec-trace && 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 "spec-trace" agent skill from https://github.com/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-trace into .claude/skills/spec-trace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-trace", 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/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-traceType 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 BrowserWorks/waterfox-android --skill spec-trace -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install BrowserWorks/waterfox-android spec-trace --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BrowserWorks/waterfox-android.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/spec-trace .agents/skills/spec-trace && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "spec-trace" agent skill from https://github.com/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-trace into .agents/skills/spec-trace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-trace", 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 BrowserWorks/waterfox-android --skill spec-trace -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install BrowserWorks/waterfox-android spec-trace --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BrowserWorks/waterfox-android.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/spec-trace .cursor/skills/spec-trace && 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 "spec-trace" agent skill from https://github.com/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-trace into .cursor/skills/spec-trace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-trace", 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/BrowserWorks/waterfox-android.git --path .agents/skills/spec-trace--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 BrowserWorks/waterfox-android --skill spec-trace -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install BrowserWorks/waterfox-android spec-trace --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BrowserWorks/waterfox-android.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/spec-trace .gemini/skills/spec-trace && 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 "spec-trace" agent skill from https://github.com/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-trace into .gemini/skills/spec-trace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-trace", 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 BrowserWorks/waterfox-android spec-traceInstalls 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 BrowserWorks/waterfox-android --skill spec-trace -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/BrowserWorks/waterfox-android.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/spec-trace .github/skills/spec-trace && 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 "spec-trace" agent skill from https://github.com/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-trace into .github/skills/spec-trace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-trace", 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 BrowserWorks/waterfox-android --skill spec-trace -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install BrowserWorks/waterfox-android spec-trace --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/BrowserWorks/waterfox-android.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/spec-trace .opencode/skills/spec-trace && 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 "spec-trace" agent skill from https://github.com/BrowserWorks/waterfox-android/tree/main/.agents/skills/spec-trace into .opencode/skills/spec-trace/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-trace", 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
spec-trace- GitHub stars
- 376
- Token cost
- ~2k tokens
- SKILL.md length
- 1,132 words
- Files
- 1
- Skills in repo
- 10
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Trace a claim about web spec behaviour through the algorithm call chain and produce a Bugzilla-ready markdown trace ending in a REACHED / NOT REACHED / INCONCLUSIVE verdict.
- Works in 4 steps: Resolve → Enumerate routes → Judge each route → …
- A bug says the spec says X should happen and you need to check whether it does
- SKILL.md covers Phase 0: Resolve, Phase 1: Enumerate routes, Phase 2: Judge each route and Phase 3: Render, plus 2 more sections
- Reaches html.spec.whatwg.org
What it does
Spec Trace is an agent skill from BrowserWorks/waterfox-android. Trace a claim about web spec behaviour through the algorithm call chain and produce a Bugzilla-ready markdown trace ending in a REACHED / NOT REACHED / INCONCLUSIVE verdict. Use when a bug says "the spec says X should happen" and you need to check whether it does, when asked where in the spec some event gets fired or some state gets set, or when a reporter's expected-results section needs a spec citation it did not provide.
Its SKILL.md is about 2k 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 Research & Science, covering Citation management. It works with Android.
When your agent uses it
- A bug says the spec says X should happen and you need to check whether it does
- Asked where in the spec some event gets fired
- Some state gets set
- A reporters expected-results section needs a spec citation it did not provide
Example prompts
- “the spec says X should happen”
- “/spec-trace”
Requirements
- Pre-approved tools (allowed-tools): Bash(webspec-index:*), Bash(searchfox-cli:*), Read
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Resolve
- Enumerate routes
- Judge each route
- Render
What it can do on your machine
Read from SKILL.md and the folder at commit 500d48c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Bash(webspec-index:*)Bash(searchfox-cli:*)Read
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 and markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
html.spec.whatwg.org
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
Spec Trace loads about 2k tokens when it runs. Until then it costs about 110 tokens; SKILL.md has 1,132 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 1,132 words (~2,024 tokens).
- name
- spec-trace
- allowed-tools
- Bash(webspec-index:*), Bash(searchfox-cli:*), Read
- argument-hint
- [--gecko] <question in prose>
Files
Just SKILL.md in .agents/skills/spec-trace of BrowserWorks/waterfox-android.
Open the folder on GitHubat commit 500d48c
Compare with similar skills
Spec Trace 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 |
|---|---|---|---|---|---|---|
| Spec Trace this skillBrowserWorks/waterfox-android | 376 | — | ~2k | Automated safety check: Pass | Custom licence | |
| Content Research Writerweapp-tailwindcss/weapp-tailwindcss | 1.9k | 25 repos | ~3.5k | Automated safety check: Pass | MIT | |
| NetworkxzLanqing/codex-claude-academic-skills | 4.6k | 16 repos | ~3.2k | Automated safety check: Pass | BSD-3-Clause | |
| Citation Verification GuideGalaxy-Dawn/claude-scholar | 5.7k | 3 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Systematic Review ScreenerImbad0202/academic-research-skills | 51k | — | ~8.4k | Automated safety check: Pass | Custom licence | |
| Literature Reviewneflibata-feng/MyArxiv-Agent | 126 | 21 repos | ~5.9k | Automated safety check: Notes | MIT |
Similar skills
Networkx
zLanqing/codex-claude-academic-skills
Comprehensive toolkit for creating, analyzing, and visualizing complex networks and graphs in Python.
Citation Verification Guide
Galaxy-Dawn/claude-scholar
Reference guidance for checking every citation in academic writing against canonical sources such as DOI, arXiv, CrossRef and Semantic Scholar, to catch fake or wrong references.
Systematic Review Screener
Imbad0202/academic-research-skills
Screens records for systematic, scoping and rapid reviews against fixed eligibility rules, using two blinded AI reviewers and a third adjudicator, with traceable PRISMA counts.
Literature Review
neflibata-feng/MyArxiv-Agent
Conduct comprehensive, systematic literature reviews using multiple academic databases (PubMed, arXiv, bioRxiv, Semantic Scholar, etc.).
Openalex Database
neflibata-feng/MyArxiv-Agent
Query and analyze scholarly literature using the OpenAlex database.
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Works with
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Questions about Spec Trace
What does Spec Trace do?
Trace a claim about web spec behaviour through the algorithm call chain and produce a Bugzilla-ready markdown trace ending in a REACHED / NOT REACHED / INCONCLUSIVE verdict. Spec Trace is an agent skill from BrowserWorks/waterfox-android. Trace a claim about web spec behaviour through the algorithm call chain and produce a Bugzilla-ready markdown trace ending in a REACHED / NOT REACHED / INCONCLUSIVE verdict.
When should I use Spec Trace?
Spec Trace fits situations like: A bug says the spec says X should happen and you need to check whether it does; asked where in the spec some event gets fired; some state gets set; A reporters expected-results section needs a spec citation it did not provide.
How do I install Spec Trace in Claude Code?
Run `npx skills add BrowserWorks/waterfox-android --skill spec-trace -a claude-code`. Or copy the skill folder (.agents/skills/spec-trace in BrowserWorks/waterfox-android) into .claude/skills/spec-trace in your project. Claude Code loads it when a task matches its description.
How do I install Spec Trace in Codex?
Run `npx skills add BrowserWorks/waterfox-android --skill spec-trace -a codex`. Or copy the skill folder (.agents/skills/spec-trace in BrowserWorks/waterfox-android) into .agents/skills/spec-trace in your project. Codex loads it when a task matches its description.
Can I use Spec Trace 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 BrowserWorks/waterfox-android --skill spec-trace -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spec-trace, .gemini/skills/spec-trace, .github/skills/spec-trace and .opencode/skills/spec-trace in your project.
What does Spec Trace need to run?
SKILL.md names no scripts, command-line tools or credentials: Spec Trace is instructions for the agent only. Its frontmatter pre-approves these tools: Bash(webspec-index:*), Bash(searchfox-cli:*), Read.
Does Spec Trace access the network?
SKILL.md names 1 domain. In commands or code: html.spec.whatwg.org; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Spec Trace 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 Spec Trace use?
Spec Trace 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 Spec Trace use?
About 2k tokens (SKILL.md is roughly 8.1k 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 Spec Trace?
Skills that share tags, products or a category with Spec Trace: Content Research Writer (weapp-tailwindcss/weapp-tailwindcss, 1.9k stars), Networkx (zLanqing/codex-claude-academic-skills, 4.6k stars), Citation Verification Guide (Galaxy-Dawn/claude-scholar, 5.7k stars) and Systematic Review Screener (Imbad0202/academic-research-skills, 51k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Spec Trace?
BrowserWorks (a GitHub organization) maintains it in BrowserWorks/waterfox-android, which has 376 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on September 22, 2026.
Source: BrowserWorks/waterfox-android on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.