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Agent skill

Trace Harness Launch Failure

by ashutoshsinghpr7 in ashutoshsinghpr7/wikiskill

Empty session traces mean launch failure, not agent behavior — verify apicallcount/toolcallcount and stdout.txt before analyzing.

MITAuto-check passedResearch & Science

Install Trace Harness Launch Failure

skills CLI
$ npx skills add ashutoshsinghpr7/wikiskill --skill trace-harness-launch-failure -a claude-code

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

GitHub CLI
$ gh skill install ashutoshsinghpr7/wikiskill trace-harness-launch-failure --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/ashutoshsinghpr7/wikiskill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/trace-harness-launch-failure .claude/skills/trace-harness-launch-failure && 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
trace-harness-launch-failure
GitHub stars
267
Token cost
~443 tokens
SKILL.md length
195 words
Files
1
Skills in repo
8
Repo updated
First seen
Licence
MIT

At a glance

Empty session traces mean launch failure, not agent behavior — verify apicallcount/toolcallcount and stdout.txt before analyzing.

  • Research & Science work in your project
  • SKILL.md covers Problem, Root cause and Fix
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Trace Harness Launch Failure is an agent skill from ashutoshsinghpr7/wikiskill. Empty session traces mean launch failure, not agent behavior — verify apicallcount/toolcallcount and stdout.txt before analyzing.

Its SKILL.md is about 440 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. The repository describes itself as: WikiSkill (arXiv:2608.27454) for Hermes Agent — self-evolving agent skills via a persistent knowledge wiki. Faithful Algorithm 1 implementation with real agent runs, isolated… The licence is MIT.

When your agent uses it

  • Research & Science work in your project

Example prompts

  • “/trace-harness-launch-failure”

What it can do on your machine

Read from SKILL.md and the folder at commit cdc291c. 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

Trace Harness Launch Failure loads about 443 tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 195 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~41
When it runs · the whole SKILL.md, loaded when a task matches
~443

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 ashutoshsinghpr7/wikiskill at commit cdc291c, republished under its MIT licence (© ashutoshsinghpr7). 195 words, ~443 tokens.

Download SKILL.mdSave it as .claude/skills/trace-harness-launch-failure/SKILL.md (or your agent's skills folder).
name
trace-harness-launch-failure
description
Empty session traces mean launch failure, not agent behavior — verify api_call_count/tool_call_count and stdout.txt before analyzing.
version
1.0.0
license
MIT
platforms
linux, macos, windows

Trace Harness Launch Failure — empty sessions, scores from deliverables

Problem

Four training traces contain ONLY the initial task prompt: 1 message, 0 tool calls, 0 API calls, ~1 s duration. No agent reasoning, tool call, or final answer anywhere — yet meta.json carries scores (0.0 / 1.0).

Root cause

Every recorded run died at launch: runs/<task>/stdout.txt shows "HTTP 400: default is not a valid model ID" — the harness sent an invalid model ID instead of the configured model, so the agent never executed. The scores were produced by grading the on-disk deliverables against the exact-match graders in tasks.json — not from any recorded agent behavior.

Fix

  • Before analyzing "agent behavior", verify the session actually ran: check api_call_count / tool_call_count / message_count in the trace and stdout.txt for launch errors. Empty trace == no behavioral evidence.
  • When traces are empty, reconstruct ground truth by diffing the on-disk deliverable against the task's grader expectation (tasks.json → grader.expected), and read spec.md + input data to explain the score.
  • Treat prior-iteration behavioral claims as unverifiable until new traces confirm them; flag evidence status in the run log.
  • Surface the harness bug so the runner is fixed before the next iteration, otherwise every proposal rests on inferred data.

© ashutoshsinghpr7, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/trace-harness-launch-failure of ashutoshsinghpr7/wikiskill.

Open the folder on GitHubat commit cdc291c

Compare with similar skills

Trace Harness Launch Failure 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.

Trace Harness Launch Failure compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Trace Harness Launch Failure this skillashutoshsinghpr7/wikiskill267—~443Automated safety check: PassMIT
Hypothesis Generationspacering-net/codeg3.9k14 repos~3.6kAutomated safety check: NotesMIT
GitHub Deep Researchbytedance/deer-flow84k4 repos~1.3kAutomated safety check: PassMIT
Nature Paper CardYuan1z0825/nature-skills47k2 repos~2.1kAutomated safety check: PassApache-2.0
Content Research Writerweapp-tailwindcss/weapp-tailwindcss1.9k25 repos~3.5kAutomated safety check: PassMIT
Peer Reviewspacering-net/codeg3.9k17 repos~5.9kAutomated safety check: NotesMIT

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More from ashutoshsinghpr7/wikiskill

All 8 skills in this repo

  • Wikiskill Evolve

    ashutoshsinghpr7/wikiskill

    Run the WikiSkill self-evolution loop (arXiv 2608.27454) on a Hermes workspace — raw→maintainer→proposer→gate with strict Rval Rbest gating.

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  • Wikiskill Proposer

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    267 GitHub stars~668 tokensUpdated 23 days ago
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  • Wikiskill Maintainer

    ashutoshsinghpr7/wikiskill

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  • Script Exec Blocked

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    Sandbox approval policy blocks executecode and python3 -c; use readfile/writefile + manual transforms instead of retrying both runners.

    267 GitHub stars~281 tokensUpdated 23 days ago
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  • Search Miss Binary

    ashutoshsinghpr7/wikiskill

    ripgrep/searchfiles silently skips binary-detected files — verify empty search results with grep -a / file / xxd before concluding 'not found'.

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  • Spec Literal Execution

    ashutoshsinghpr7/wikiskill

    Apply ONLY the spec clauses literally — no aggregation, dedup, or cleanup transforms; each input record maps to its own output line.

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Categories

Questions about Trace Harness Launch Failure

What does Trace Harness Launch Failure do?

Empty session traces mean launch failure, not agent behavior — verify apicallcount/toolcallcount and stdout.txt before analyzing. Trace Harness Launch Failure is an agent skill from ashutoshsinghpr7/wikiskill.txt before analyzing.

When should I use Trace Harness Launch Failure?

Trace Harness Launch Failure fits situations like: research & Science work in your project.

How do I install Trace Harness Launch Failure in Claude Code?

Run `npx skills add ashutoshsinghpr7/wikiskill --skill trace-harness-launch-failure -a claude-code`. Or copy the skill folder (skills/trace-harness-launch-failure in ashutoshsinghpr7/wikiskill) into .claude/skills/trace-harness-launch-failure in your project. Claude Code loads it when a task matches its description.

How do I install Trace Harness Launch Failure in Codex?

Run `npx skills add ashutoshsinghpr7/wikiskill --skill trace-harness-launch-failure -a codex`. Or copy the skill folder (skills/trace-harness-launch-failure in ashutoshsinghpr7/wikiskill) into .agents/skills/trace-harness-launch-failure in your project. Codex loads it when a task matches its description.

Can I use Trace Harness Launch Failure 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 ashutoshsinghpr7/wikiskill --skill trace-harness-launch-failure -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/trace-harness-launch-failure, .gemini/skills/trace-harness-launch-failure, .github/skills/trace-harness-launch-failure and .opencode/skills/trace-harness-launch-failure in your project.

What does Trace Harness Launch Failure need to run?

SKILL.md names no scripts, command-line tools or credentials: Trace Harness Launch Failure is instructions for the agent only.

Does Trace Harness Launch Failure 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 Trace Harness Launch Failure 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 Trace Harness Launch Failure use?

Trace Harness Launch Failure is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Trace Harness Launch Failure use?

About 443 tokens (SKILL.md is roughly 1.8k 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 Trace Harness Launch Failure?

Skills that share tags, products or a category with Trace Harness Launch Failure: Hypothesis Generation (spacering-net/codeg, 3.9k stars), GitHub Deep Research (bytedance/deer-flow, 84k stars), Nature Paper Card (Yuan1z0825/nature-skills, 47k stars) and Content Research Writer (weapp-tailwindcss/weapp-tailwindcss, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Trace Harness Launch Failure?

ashutoshsinghpr7 (a GitHub user) maintains it in ashutoshsinghpr7/wikiskill, which has 267 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on September 15, 2026.

Source: ashutoshsinghpr7/wikiskill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.