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 skills/t-rav/hydraflow/hf.block-destructive-gitnpx skills add T-rav/hydraflow --skill hf.block-destructive-gitgit clone --depth 1 https://github.com/T-rav/hydraflowWrote 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/skills/t-rav/hydraflow/hf.block-destructive-git)<a href="https://agentmods.dev/skills/t-rav/hydraflow/hf.block-destructive-git"><img src="https://agentmods.dev/badge/skills/t-rav/hydraflow/hf.block-destructive-git.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00013 | $0.00379 |
| Opus 5 | $0.00006 | $0.00189 |
| Sonnet 5 | $0.00003 | $0.00076 |
| Haiku 4.5 | $0.00001 | $0.00038 |
Grade A, and why
hf.block-destructive-git scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
hf.block-destructive-git
#!/bin/bash
# Hook: Block destructive git commands that are hard to reverse.
# Fires on PreToolUse for all Bash commands.
# Blocks: push --force, reset --hard, checkout ., restore ., clean -f, branch -D
set -euo pipefail
INPUT=$(cat)
COMMAND=$(echo "$INPUT" | jq -r '.tool_input.command // empty')
if [ -z "$COMMAND" ]; then
exit 0
fi
# Block destructive git commands
if echo "$COMMAND" | grep -qE 'git\s+(push\s+.*--force|push\s+-f\b|reset\s+--hard|checkout\s+\.|restore\s+\.|clean\s+-f|branch\s+-D)'; then
echo "BLOCKED: Destructive git command detected." >&2
echo "" >&2
echo "The following are forbidden without explicit user approval:" >&2
echo " - git push --force / -f (overwrites remote history)" >&2
echo " - git reset --hard (discards uncommitted changes)" >&2
echo " - git checkout . (discards all working tree changes)" >&2
echo " - git restore . (discards all working tree changes)" >&2
echo " - git clean -f (deletes untracked files)" >&2
echo " - git branch -D (force-deletes branch)" >&2
echo "" >&2
echo "Ask the user for explicit approval before running destructive commands." >&2
exit 2
fi
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.
- 5d ago First seen · 39 lines · 13 tokens per session scan A 4fe0c54910c9
hf.block-destructive-git is a skill published in the GitHub repository T-rav/hydraflow (5 stars, last pushed today), licensed Apache-2.0. It adds 13 tokens to every session and 379 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-31.
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