OpenMetadata is an open platform that organizes information about data, including its meaning, ownership, quality, history, and relationships. It provides governed context for data users, AI assistants, and agents that need to discover and understand trustworthy data.
Borrowing it
Nothing to install: this file belongs to open-metadata/OpenMetadata. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/open-metadata/OpenMetadata/main/.claude/settings.jsongit clone --depth 1 https://github.com/open-metadata/OpenMetadataWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/hooks/open-metadata/openmetadata/pre-tool-use)<a href="https://agentmods.dev/hooks/open-metadata/openmetadata/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/open-metadata/openmetadata/pre-tool-use/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/hooks/open-metadata/openmetadata/pre-tool-use"><img src="https://agentmods.dev/badge/hooks/open-metadata/openmetadata/pre-tool-use.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade 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 13d 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.
How it starts
The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.
{
"PreToolUse": [
{
"matcher": "Bash",
"hooks": [
{
"type": "command",
"command": "if echo \"$CLAUDE_TOOL_INPUT\" | grep -q -- '--no-verify'; then echo '{\"decision\": \"block\", \"reason\": \"Do not skip pre-commit hooks with --no-verify. Fix the underlying issue instead.\"}'; exit 2; fi",
"description": "Block --no-verify on git commits"
},
{
"type": "command",
"command": "bash \"${CLAUDE_PROJECT_DIR:-.}/.github/scripts/java_impact_map_hook.sh\" pre-pr",
"description": "Block git push / gh pr create while the branch leaves Java code or ITs without an impact-map area"
}
]
},
{
"matcher": "Edit|Write",
"hooks": [
{
"type": "command",
"command": "FILE=$(echo \"$CLAUDE_TOOL_INPUT\" | jq -r '.file_path // empty' 2>/dev/null); if [ -n \"$FILE\" ] && echo \"$FILE\" | grep -qE '(openmetadata-ui/src/main/resources/ui/src/generated/|ingestion(-core)?/src/metadata/generated/|/target/generated-sources/)'; then echo '{\"decision\": \"block\", \"reason\": \"Blocked write to GENERATED output. This file is produced by code generation (jsonschema2pojo / datamodel-code-generator / quicktype / ANTLR); hand edits are overwritten by the next build and, for the committed UI types, reverted by the typescript-type-generation CI job. Edit the JSON Schema under openmetadata-spec/src/main/resources/json/schema/ and run make generate (a repo-root-only target). See .claude/rules/schema-first.md.\"}'; exit 2; fi",
"description": "Block edits to generated output; direct to the schema + make generate"
},
{
"type": "command",
"command": "FILE=$(echo \"$CLAUDE_TOOL_INPUT\" | jq -r '.file_path // empty' 2>/dev/null); if [ -n \"$FILE\" ] && echo \"$FILE\" | grep -qE 'docs/generated/(entity-index|api-reference)\\.md'; then echo '{\"decision\": \"block\", \"reason\": \"Blocked write to a GENERATWhat else settings.json configures
This page is one entry in a file that holds 3. Installing the file brings all of them; each is measured and scanned on its own page.
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.
- 13d ago Changed · +5 lines 5dc60fe7a3fb
- 1mo ago First seen · 39 lines scan A eeef0dcf8463
PreToolUse is a hook published in the GitHub repository open-metadata/OpenMetadata (15,552 stars, last pushed today), licensed Apache-2.0. 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
SessionStart
Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.
PostToolUse
Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.
SessionStart
Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.
PreToolUse
Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.
PostToolUse
Runs after a tool call finishes for Bash tool calls, executing hooks.sh via sh (3 commands). From anthropics/claude-plugins-official.
PreCompact
Runs before the context is compacted for manual and auto tool calls, executing hook-handler.cjs via node (4 commands). From ruvnet/RuView.