Update V8 Version
openinterpreter/openinterpreter
Bumps the pinned v8 and rusty_v8 versions in Codex, validates the release-candidate path with the v8-canary check, and traces failures to upstream build changes.
Debug tsz compiler issues using the built-in tracing infrastructure.
Apache-2.0Auto-check passed
Install Tsz Tracing
$ npx skills add tsz-org/tsz --skill tsz-tracing -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install tsz-org/tsz tsz-tracing --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/tsz-org/tsz.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/tsz-tracing .claude/skills/tsz-tracing && 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 "tsz-tracing" agent skill from https://github.com/tsz-org/tsz/tree/main/.agents/skills/tsz-tracing into .claude/skills/tsz-tracing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tsz-tracing", 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/tsz-org/tsz/tree/main/.agents/skills/tsz-tracingType 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 tsz-org/tsz --skill tsz-tracing -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install tsz-org/tsz tsz-tracing --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tsz-org/tsz.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/tsz-tracing .agents/skills/tsz-tracing && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "tsz-tracing" agent skill from https://github.com/tsz-org/tsz/tree/main/.agents/skills/tsz-tracing into .agents/skills/tsz-tracing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tsz-tracing", 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 tsz-org/tsz --skill tsz-tracing -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install tsz-org/tsz tsz-tracing --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tsz-org/tsz.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/tsz-tracing .cursor/skills/tsz-tracing && 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 "tsz-tracing" agent skill from https://github.com/tsz-org/tsz/tree/main/.agents/skills/tsz-tracing into .cursor/skills/tsz-tracing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tsz-tracing", 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/tsz-org/tsz.git --path .agents/skills/tsz-tracing--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 tsz-org/tsz --skill tsz-tracing -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install tsz-org/tsz tsz-tracing --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tsz-org/tsz.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/tsz-tracing .gemini/skills/tsz-tracing && 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 "tsz-tracing" agent skill from https://github.com/tsz-org/tsz/tree/main/.agents/skills/tsz-tracing into .gemini/skills/tsz-tracing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tsz-tracing", 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 tsz-org/tsz tsz-tracingInstalls 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 tsz-org/tsz --skill tsz-tracing -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/tsz-org/tsz.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/tsz-tracing .github/skills/tsz-tracing && 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 "tsz-tracing" agent skill from https://github.com/tsz-org/tsz/tree/main/.agents/skills/tsz-tracing into .github/skills/tsz-tracing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tsz-tracing", 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 tsz-org/tsz --skill tsz-tracing -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install tsz-org/tsz tsz-tracing --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/tsz-org/tsz.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/tsz-tracing .opencode/skills/tsz-tracing && 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 "tsz-tracing" agent skill from https://github.com/tsz-org/tsz/tree/main/.agents/skills/tsz-tracing into .opencode/skills/tsz-tracing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tsz-tracing", 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
tsz-tracing- GitHub stars
- 577
- Token cost
- ~475 tokens
- SKILL.md length
- 151 words
- Files
- 2
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Debug tsz compiler issues using the built-in tracing infrastructure.
- Works in 5 steps: Reduce to the smallest .ts witness. → Compare expected behavior with npx tsc… → Start broad (debug, tree), then narrow… → …
- Investigating type inference bugs
- SKILL.md covers Commands, Workflow, Useful Filters and Read Output
- Calls cargo and npx
What it does
Tsz Tracing is an agent skill from tsz-org/tsz. Debug tsz compiler issues using the built-in tracing infrastructure. Use when investigating type inference bugs, conformance failures, or understanding runtime behavior. Provides hierarchical trace output of solver, checker, and binder operations.
Its SKILL.md is about 480 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `QUICKREF.md`).
It works with Rust. The repository describes itself as: An experiment in fully hand-off software engineering: A performance-first TypeScript checker. The licence is Apache-2.0.
When your agent uses it
- Investigating type inference bugs
- Conformance failures
- Understanding runtime behavior
Example prompts
- “/tsz-tracing”
Requirements
- Node.js
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Reduce to the smallest .ts witness.
- Compare expected behavior with npx tsc --noEmit file.ts.
- Start broad (debug, tree), then narrow by module.
- Capture large traces with 2> trace.log, head, tail, rg, or
- Use structured trace fields and spans; never add ad-hoc stdout/stderr
What it can do on your machine
Read from SKILL.md and the folder at commit 153b25a. 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
Shell commands in SKILL.md call:
cargonpx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.
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
Tsz Tracing loads about 475 tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 151 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
The full file from tsz-org/tsz at commit 153b25a, republished under its Apache-2.0 licence (© tsz-org). 151 words, ~475 tokens.
Download SKILL.mdSave it as
.claude/skills/tsz-tracing/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- tsz-tracing
- description
- Debug tsz compiler issues using the built-in tracing infrastructure. Use when investigating type inference bugs, conformance failures, or understanding runtime behavior. Provides hierarchical trace output of solver, checker, and binder operations.
TSZ Tracing
Use tracing before adding debug prints. It is for conformance failures, inference/narrowing/assignability surprises, and runtime path discovery.
Commands
TSZ_LOG=debug TSZ_LOG_FORMAT=tree cargo run -p tsz-cli -- file.ts
TSZ_LOG=debug TSZ_LOG_FORMAT=json cargo run -p tsz-cli -- file.ts
TSZ_LOG="tsz_solver=trace,tsz_checker=debug" TSZ_LOG_FORMAT=tree cargo run -p tsz-cli -- file.ts
TSZ_LOG="tsz_solver::narrowing=trace" TSZ_LOG_FORMAT=tree cargo run -p tsz-cli -- file.tsUse RUST_LOG only as fallback. TSZ_LOG_FORMAT values: tree, json,
text.
Workflow
- Reduce to the smallest
.tswitness. - Compare expected behavior with
npx tsc --noEmit file.ts. - Start broad (
debug, tree), then narrow by module. - Capture large traces with
2> trace.log,head,tail,rg, orgrep "type_id=<id>". - Use structured trace fields and spans; never add ad-hoc stdout/stderr debugging.
Useful Filters
- Narrowing:
TSZ_LOG="tsz_solver::narrowing=trace". - Relations/inference:
TSZ_LOG="tsz_solver=debug". - Checker lookup/cache:
TSZ_LOG="tsz_checker=debug". - Query events:
TSZ_LOG=tsz::query_json=trace TSZ_LOG_FORMAT=json.
Read Output
Tree output nests spans, shows elapsed ms, level, module path, event, and fields. Look for the first structural divergence: wrong narrowed member, unexpected relation result, missing lazy ref resolution, cache hit/miss, or diagnostic source-span decision.
Tracing goes to stderr and is initialized only when TSZ_LOG/RUST_LOG is set.
For trace examples and quick reminders, read QUICKREF.md.
© tsz-org, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in .agents/skills/tsz-tracing of tsz-org/tsz.
- SKILL.md
- QUICKREF.md
Open the folder on GitHubat commit 153b25a
Compare with similar skills
Tsz Tracing 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 |
|---|---|---|---|---|---|---|
| Tsz Tracing this skilltsz-org/tsz | 577 | — | ~475 | Automated safety check: Pass | Apache-2.0 | |
| Update V8 Versionopeninterpreter/openinterpreter | 69k | 2 repos | ~845 | Automated safety check: Pass | Apache-2.0 | |
| Firecrawl Page Scrape Integrationfirecrawl/firecrawl | 190k | 1 repos | ~944 | Automated safety check: Pass | ISC | |
| Migrate Core Code to Submodulestinyhumansai/openhuman | 42k | — | ~2.6k | Automated safety check: Pass | GPL-3.0 | |
| Rust TDD Workflowrtk-ai/rtk | 83k | — | ~753 | Automated safety check: Notes | Apache-2.0 | |
| OpenLogi macOS Permissions TriageAprilNEA/OpenLogi | 23k | — | ~2.5k | Automated safety check: Notes | Apache-2.0 |
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firecrawl/firecrawl
Adds Firecrawl's /scrape endpoint to application code to pull markdown, HTML, links, screenshots or structured data from a single known URL.
Migrate Core Code to Submodules
tinyhumansai/openhuman
Plans and carries out moving non-host-specific code and its tests from the OpenHuman core into vendored tiny submodule libraries, then releases the submodule and re-pins the host.
Rust TDD Workflow
rtk-ai/rtk
Enforces red-green-refactor for Rust work, with idiomatic test patterns, a naming convention and a pre-commit gate of cargo fmt, clippy and test.
OpenLogi macOS Permissions Triage
AprilNEA/OpenLogi
Decides whether an OpenLogi device problem on macOS is a privacy-permission (TCC) problem, using agent log lines, and says which identity needs which grant.
Rust Best Practices
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Run a deep DRY + code-hygiene audit of the Rust workspace and turn the findings into verified, deduplicated, hierarchical GitHub tech-debt issues.
Tsz Iteration Audit
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Audit TSZ repo iteration speed and quality. An agent skill from tsz-org/tsz.
Tsz Performance Engineering
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A skill your agent uses when planning, implementing, reviewing, or interpreting TSZ performance work, including benchmark regressions, cache/residency changes, timing claims, perf counters, hotspot…
Tsz PR Coordination
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Create, refresh, and publish TSZ pull requests with correct body and state.
Tsz Worktree Intake
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Start TSZ work safely in a crowded multi-agent checkout. An agent skill from tsz-org/tsz.
Tsz Architecture
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Preserve TSZ architecture boundaries while changing checker, solver, binder, emitter, LSP, WASM, or CLI code.
Related
Works with
Questions about Tsz Tracing
What does Tsz Tracing do?
Debug tsz compiler issues using the built-in tracing infrastructure. Tsz Tracing is an agent skill from tsz-org/tsz. Debug tsz compiler issues using the built-in tracing infrastructure.
When should I use Tsz Tracing?
Tsz Tracing fits situations like: investigating type inference bugs; conformance failures; understanding runtime behavior.
How do I install Tsz Tracing in Claude Code?
Run `npx skills add tsz-org/tsz --skill tsz-tracing -a claude-code`. Or copy the skill folder (.agents/skills/tsz-tracing in tsz-org/tsz) into .claude/skills/tsz-tracing in your project. Claude Code loads it when a task matches its description.
How do I install Tsz Tracing in Codex?
Run `npx skills add tsz-org/tsz --skill tsz-tracing -a codex`. Or copy the skill folder (.agents/skills/tsz-tracing in tsz-org/tsz) into .agents/skills/tsz-tracing in your project. Codex loads it when a task matches its description.
Can I use Tsz Tracing 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 tsz-org/tsz --skill tsz-tracing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/tsz-tracing, .gemini/skills/tsz-tracing, .github/skills/tsz-tracing and .opencode/skills/tsz-tracing in your project.
What does Tsz Tracing need to run?
Going by SKILL.md and its folder, Tsz Tracing needs the command-line tools its instructions call (cargo and npx). Our summary lists: Node.js.
Does Tsz Tracing access the network?
SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Tsz Tracing 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 Tsz Tracing use?
Tsz Tracing is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Tsz Tracing use?
About 475 tokens (SKILL.md is roughly 1.9k 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 Tsz Tracing?
Skills that share tags, products or a category with Tsz Tracing: Update V8 Version (openinterpreter/openinterpreter, 69k stars), Firecrawl Page Scrape Integration (firecrawl/firecrawl, 190k stars), Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars) and Rust TDD Workflow (rtk-ai/rtk, 83k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Tsz Tracing?
tsz-org (a GitHub organization) maintains it in tsz-org/tsz, which has 577 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on September 9, 2026.
Source: tsz-org/tsz on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.