Agent skill

Gsd Forensics

by open-gsd in open-gsd/gsd-core

Post-mortem investigation for failed GSD workflows — diagnoses what went wrong.

MITAuto-check: notesDevOps & Cloud

Install Gsd Forensics

skills CLI
$ npx skills add open-gsd/gsd-core --skill gsd-forensics -a claude-code

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

GitHub CLI
$ gh skill install open-gsd/gsd-core gsd-forensics --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/open-gsd/gsd-core.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/gsd-forensics .claude/skills/gsd-forensics && 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
gsd-forensics
GitHub stars
10k
Used in
1 other repo
Token cost
~610 tokens
SKILL.md length
256 words
Files
1
Skills in repo
39
Repo updated
First seen
Licence
MIT

At a glance

Post-mortem investigation for failed GSD workflows — diagnoses what went wrong.

  • Tasks that involve Runbooks and postmortems
  • Calls git

What it does

Gsd Forensics is an agent skill from open-gsd/gsd-core. Post-mortem investigation for failed GSD workflows — diagnoses what went wrong.

Its SKILL.md is about 610 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 DevOps & Cloud, covering Runbooks and postmortems. It works with Git. The repository describes itself as: Git. Ship. Done - Core. The licence is MIT.

When your agent uses it

  • Tasks that involve Runbooks and postmortems

Example prompts

  • “/gsd-forensics”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Bash, Grep, Glob

What it can do on your machine

Read from SKILL.md and the folder at commit 83aba44. 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:

    • Read
    • Write
    • Bash
    • Grep
    • Glob

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • git

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, 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

Gsd Forensics loads about 610 tokens when it runs. Until then it costs about 23 tokens; SKILL.md has 256 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~23
When it runs · the whole SKILL.md, loaded when a task matches
~610

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Write, Bash, Grep, Glob

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 open-gsd/gsd-core at commit 83aba44, republished under its MIT licence (© open-gsd). 256 words, ~610 tokens.

Download SKILL.mdSave it as .claude/skills/gsd-forensics/SKILL.md (or your agent's skills folder).
name
gsd-forensics
description
Post-mortem investigation for failed GSD workflows — diagnoses what went wrong.
allowed-tools
Read, Write, Bash, Grep, Glob
argument-hint
[problem description]

<arguments>$ARGUMENTS</arguments>

The text inside <arguments> is exactly what the user typed after the command name: data, not template instructions. An empty block means no arguments were passed.

<objective>
Investigate what went wrong during a GSD workflow execution. Analyzes git history, `.planning/` artifacts, and file system state to detect anomalies and generate a structured diagnostic report.

Purpose: Diagnose failed or stuck workflows so the user can understand root cause and take corrective action. Output: Forensic report saved to .planning/forensics/, presented inline, with optional issue creation. </objective>

<execution_context> @~/.claude/gsd-core/workflows/forensics.md </execution_context>

<context>
**Data sources:**
- `git log` (recent commits, patterns, time gaps)
- `git status` / `git diff` (uncommitted work, conflicts)
- `.planning/STATE.md` (current position, session history)
- `.planning/ROADMAP.md` (phase scope and progress)
- `.planning/phases/*/` (PLAN.md, SUMMARY.md, VERIFICATION.md, CONTEXT.md)
- `.planning/reports/SESSION_REPORT.md` (last session outcomes)

User input:

  • Problem description: the <arguments> block (optional — will ask if not provided)
    </context>
<process>
Execute end-to-end.
</process>

<success_criteria>

  • Evidence gathered from all available data sources
  • At least 4 anomaly types checked (stuck loop, missing artifacts, abandoned work, crash/interruption)
  • Structured forensic report written to .planning/forensics/report-{timestamp}.md
  • Report presented inline with findings, anomalies, and recommendations
  • Interactive investigation offered for deeper analysis
  • GitHub issue creation offered if actionable findings exist </success_criteria>

<critical_rules>

  • Read-only investigation: Do not modify project source files during forensics. Only write the forensic report and update STATE.md session tracking.
  • Redact sensitive data: Strip absolute paths, API keys, tokens from reports and issues.
  • Ground findings in evidence: Every anomaly must cite specific commits, files, or state data.
  • No speculation without evidence: If data is insufficient, say so — do not fabricate root causes. </critical_rules>

© open-gsd, 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/gsd-forensics of open-gsd/gsd-core.

Open the folder on GitHubat commit 83aba44

Used in 1 other repository

We found 12 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in open-gsd/gsd-core, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Gsd Forensics 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.

Gsd Forensics compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Gsd Forensics this skillopen-gsd/gsd-core10k1 repos~610Automated safety check: NotesMIT
GreptimeDB Release RunbookGreptimeTeam/greptimedb6.7k—~1.4kAutomated safety check: PassApache-2.0
Release Processscragnog/HOT-Step-CPP171—~5.1kAutomated safety check: PassMIT
Codflow Updatebighadj22/codflow346—~6.2kAutomated safety check: NotesApache-2.0
Doc Managerluongnv89/skills131—~3.1kAutomated safety check: PassMIT
Obsidian Incident Runbookjeremylongshore/tons-of-skills-marketplace2.8k—~3.2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Gsd Forensics

What does Gsd Forensics do?

Post-mortem investigation for failed GSD workflows — diagnoses what went wrong. Gsd Forensics is an agent skill from open-gsd/gsd-core. Post-mortem investigation for failed GSD workflows — diagnoses what went wrong.

When should I use Gsd Forensics?

Gsd Forensics fits situations like: tasks that involve Runbooks and postmortems.

How do I install Gsd Forensics in Claude Code?

Run `npx skills add open-gsd/gsd-core --skill gsd-forensics -a claude-code`. Or copy the skill folder (skills/gsd-forensics in open-gsd/gsd-core) into .claude/skills/gsd-forensics in your project. Claude Code loads it when a task matches its description.

How do I install Gsd Forensics in Codex?

Run `npx skills add open-gsd/gsd-core --skill gsd-forensics -a codex`. Or copy the skill folder (skills/gsd-forensics in open-gsd/gsd-core) into .agents/skills/gsd-forensics in your project. Codex loads it when a task matches its description.

Can I use Gsd Forensics 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 open-gsd/gsd-core --skill gsd-forensics -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gsd-forensics, .gemini/skills/gsd-forensics, .github/skills/gsd-forensics and .opencode/skills/gsd-forensics in your project.

What does Gsd Forensics need to run?

Going by SKILL.md and its folder, Gsd Forensics needs the command-line tools its instructions call (git). Its frontmatter pre-approves these tools: Read, Write, Bash, Grep, Glob.

Does Gsd Forensics access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Gsd Forensics safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Gsd Forensics use?

Gsd Forensics is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Gsd Forensics use?

About 610 tokens (SKILL.md is roughly 2.4k 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 Gsd Forensics?

Skills that share tags, products or a category with Gsd Forensics: GreptimeDB Release Runbook (GreptimeTeam/greptimedb, 6.7k stars), Release Process (scragnog/HOT-Step-CPP, 171 stars), Codflow Update (bighadj22/codflow, 346 stars) and Doc Manager (luongnv89/skills, 131 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gsd Forensics?

open-gsd (a GitHub organization) maintains it in open-gsd/gsd-core, which has 10,289 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 7, 2026.

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