Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add hooks/sighup/claude-workflow/pre-tool-usegit clone --depth 1 https://github.com/sighup/claude-workflowGrade A, and why
PreToolUse scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 14 lines scan A 7e392d185b97
PreToolUse is a hook published in the GitHub repository sighup/claude-workflow (15 stars, last pushed 1mo ago), with no licence file. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other hooks, from other repositories
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing license_prompt_guard.py and run_if_licensed.py via uv with --no-project, --python and --exec (3 commands). From maxritter/pilot-shell.
PreCompact
Runs before the context is compacted, executing gsd-context-monitor.js via node. From open-gsd/gsd-core.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing route-natural-language-aliases.sh. From loiane/specs-driven-development-spring-angular.
PostToolUse
Runs after a tool call finishes for Edit and Write tool calls, executing gate_plan_frontmatter.py and gate_spec_frontmatter.py via uv with --no-project and --script (4 commands). From andyrids/icm-spec.
PreToolUse
Runs before the agent uses a tool for Edit and Write tool calls, executing gate_spec_edit.py and gate_output_naming.py via uv with --no-project and --script (4 commands). From andyrids/icm-spec.
UserPromptSubmit
Runs when you submit a prompt, before the agent sees it, executing get-skill-output.py and detect-giving-up.sh via python3 (2 commands). From cowwoc/cat.