Block No Verify
Chapter 20 of 180
Configure a PreToolUse hook to prevent AI agents from skipping git pre-commit hooks with --no-verify and other bypass flags.
2 minutes · 461 words · 15 sections
PreToolUse hook configuration that intercepts and blocks bypass-flag usage before execution, ensuring AI agents cannot skip pre-commit hooks, GPG signing, or other git safety mechanisms.
AI coding agents (Claude Code, Codex, etc.) can run shell commands with flags like --no-verify that bypass pre-commit hooks. This defeats the purpose of linting, formatting, testing, and security checks configured in pre-commit hooks. The block-no-verify hook adds a PreToolUse guard that rejects any tool call containing bypass flags before execution.
Before You Build
Block No Verify
Brand Landingpage
Business Analytics
Database Design
Documentation Generation
Documentation Standards
File Conversion
Framework Migration
Frontend Mobile Development
Game Development
Hermes Tweet
Hr Legal Compliance
Incident Response
Kubernetes Operations
Machine Learning Ops
NET Contribution
Observability Monitoring
Payment Processing
Plugin Eval
Protect MCP
Python Development · Python…
Quantitative Trading
Review Agent Governance
Ship Mate
Signed Audit Trails
Skill Forge Essentials
Social Publishing
Systems Programming
180 chapters · 328 min
When AI agents commit code, they may use bypass flags to avoid hook failures:
# These commands skip pre-commit hooks entirely
git commit --no-verify -m "quick fix"
git push --no-verify
git commit --no-gpg-sign -m "unsigned commit"
git merge --no-verify feature-branchThis allows:
Add a PreToolUse hook to .claude/settings.json that inspects every Bash tool call and blocks commands containing bypass flags.
Add the following to your project’s .claude/settings.json:
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hook": {
"type": "command",
"command": "if printf '%s' \"$TOOL_INPUT\" | grep -qE '(^|&&|;|\\|)\\s*git\\s+.*--(no-verify|no-gpg-sign)'; then echo 'BLOCKED: --no-verify and --no-gpg-sign flags are not allowed. Run the commit without bypass flags so that pre-commit hooks execute properly.' >&2; exit 2; fi"
}
}
]
}
}Bash tool calls, so it does not interfere with other tools (Read, Edit, Grep, etc.).$TOOL_INPUT environment variable contains the full command the agent is about to execute. The hook uses printf to safely pass input (avoiding echo pitfalls with special characters) and checks for --no-verify or --no-gpg-sign flags only when preceded by a git command.| Code | Meaning |
|---|---|
| 0 | Allow the tool call to proceed |
| 1 | Error (tool call still proceeds, warning shown) |
| 2 | Block the tool call entirely |
| Flag | Purpose | Why Blocked |
|---|---|---|
--no-verify | Skips pre-commit and commit-msg hooks | Bypasses linting, formatting, testing, security checks |
--no-gpg-sign | Skips GPG commit signing | Bypasses commit signing policy |
Create or update .claude/settings.json in your project root:
mkdir -p .claude
cat > .claude/settings.json << 'EOF'
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hook": {
"type": "command",
"command": "if printf '%s' \"$TOOL_INPUT\" | grep -qE '(^|&&|;|\\|)\\s*git\\s+.*--(no-verify|no-gpg-sign)'; then echo 'BLOCKED: --no-verify and --no-gpg-sign flags are not allowed. Run the commit without bypass flags so that pre-commit hooks execute properly.' >&2; exit 2; fi"
}
}
]
}
}
EOFTo enforce across all projects, add to ~/.claude/settings.json:
mkdir -p ~/.claude
cat > ~/.claude/settings.json << 'EOF'
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hook": {
"type": "command",
"command": "if printf '%s' \"$TOOL_INPUT\" | grep -qE '(^|&&|;|\\|)\\s*git\\s+.*--(no-verify|no-gpg-sign)'; then echo 'BLOCKED: --no-verify and --no-gpg-sign flags are not allowed. Run the commit without bypass flags so that pre-commit hooks execute properly.' >&2; exit 2; fi"
}
}
]
}
}
EOFTest that the hook blocks bypass flags:
# This should be blocked by the hook:
git commit --no-verify -m "test"
# This should succeed normally:
git commit -m "test"To block additional flags (e.g., --force), extend the grep pattern:
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hook": {
"type": "command",
"command": "if printf '%s' \"$TOOL_INPUT\" | grep -qE '(^|&&|;|\\|)\\s*git\\s+.*--(no-verify|no-gpg-sign|force-with-lease|force)'; then echo 'BLOCKED: Bypass flags are not allowed.' >&2; exit 2; fi"
}
}
]
}
}The block-no-verify hook works alongside other PreToolUse hooks:
{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash",
"hook": {
"type": "command",
"command": "if printf '%s' \"$TOOL_INPUT\" | grep -qE '(^|&&|;|\\|)\\s*git\\s+.*--(no-verify|no-gpg-sign)'; then echo 'BLOCKED: Bypass flags not allowed.' >&2; exit 2; fi"
}
},
{
"matcher": "Bash",
"hook": {
"type": "command",
"command": "if printf '%s' \"$TOOL_INPUT\" | grep -qE 'rm\\s+-rf\\s+/'; then echo 'BLOCKED: Dangerous rm command.' >&2; exit 2; fi"
}
}
]
}
}.claude/settings.json to version control so all team members benefit from the hook.Install this repository
npx skills add wshobson/agents/plugin marketplace add wshobson/agentsSkills install per repository, not per chapter — the CLI has no documented per-skill form, so we do not print one.
Configure a PreToolUse hook to prevent AI agents from skipping git pre-commit hooks with --no-verify and other bypass flags. Use when setting up Claude Code projects that enforce commit quality gates.
The verbatim description from this skill’s front matter — the string an agent matches on to decide whether to load it.
main, last pushed 5 August 2026.SKILL.md, not by matching a directory convention. 49 distinct layouts observed: plugins/accessibility-compliance/skills/*/SKILL.md, plugins/agent-teams/skills/*/SKILL.md, plugins/api-scaffolding/skills/*/SKILL.md, plugins/backend-development/skills/*/SKILL.md, plugins/before-you-build/skills/*/SKILL.md, plugins/block-no-verify/skills/*/SKILL.md, plugins/blockchain-web3/skills/*/SKILL.md, plugins/brand-landingpage/skills/*/SKILL.md, plugins/business-analytics/skills/*/SKILL.md, plugins/cicd-automation/skills/*/SKILL.md, plugins/cloud-infrastructure/skills/*/SKILL.md, plugins/conductor/skills/*/SKILL.md, plugins/data-engineering/skills/*/SKILL.md, plugins/database-design/skills/*/SKILL.md, plugins/developer-essentials/skills/*/SKILL.md, plugins/dgx-spark-ops/skills/*/SKILL.md, plugins/documentation-generation/skills/*/SKILL.md, plugins/documentation-standards/skills/*/SKILL.md, plugins/dotnet-contribution/skills/*/SKILL.md, plugins/file-conversion/skills/*/SKILL.md, plugins/framework-migration/skills/*/SKILL.md, plugins/frontend-mobile-development/skills/*/SKILL.md, plugins/game-development/skills/*/SKILL.md, plugins/hermes-tweet/skills/*/SKILL.md, plugins/hr-legal-compliance/skills/*/SKILL.md, plugins/incident-response/skills/*/SKILL.md, plugins/javascript-typescript/skills/*/SKILL.md, plugins/kubernetes-operations/skills/*/SKILL.md, plugins/llm-application-dev/skills/*/SKILL.md, plugins/llm-finetuning/skills/*/SKILL.md, plugins/machine-learning-ops/skills/*/SKILL.md, plugins/observability-monitoring/skills/*/SKILL.md, plugins/payment-processing/skills/*/SKILL.md, plugins/plugin-eval/skills/*/SKILL.md, plugins/pptx-deck-creation/skills/*/SKILL.md, plugins/protect-mcp/skills/*/SKILL.md, plugins/python-development/skills/*/SKILL.md, plugins/quantitative-trading/skills/*/SKILL.md, plugins/reverse-engineering/skills/*/SKILL.md, plugins/review-agent-governance/skills/*/SKILL.md, plugins/security-scanning/skills/*/SKILL.md, plugins/shell-scripting/skills/*/SKILL.md, plugins/ship-mate/skills/*/SKILL.md, plugins/signed-audit-trails/skills/*/SKILL.md, plugins/skill-forge-essentials/skills/*/SKILL.md, plugins/social-publishing/skills/*/SKILL.md, plugins/startup-business-analyst/skills/*/SKILL.md, plugins/systems-programming/skills/*/SKILL.md, plugins/ui-design/skills/*/SKILL.md.h1 and no skipped levels:.claude-plugin/marketplace.json by Seth Hobson, declaring 95 plugins. It is read for editorial metadata only — never as the skill index, which is always the repository tree./wshobson/agents.md, and each chapter at its own .md URL.