Jason Woltje
92316ab41e
Co-authored-by: Jason Woltje <jason@diversecanvas.com> Co-committed-by: Jason Woltje <jason@diversecanvas.com>
39 lines
1.3 KiB
Bash
Executable File
39 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# prevent-memory-write.sh — PreToolUse hook
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#
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# Blocks Write/Edit/MultiEdit calls targeting Claude Code's native auto-memory
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# files (~/.claude/projects/*/memory/*.md).
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#
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# These files are runtime-specific silos that no other agent harness can read.
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# All agent learnings MUST go to OpenBrain (capture MCP tool or REST API).
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# MEMORY.md files may only contain load-path behavioral guardrails — not knowledge.
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#
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# Exit codes (Claude Code PreToolUse):
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# 0 = allow
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# 2 = block with message shown to agent
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set -euo pipefail
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INPUT="$(cat)"
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FILE_PATH="$(echo "$INPUT" | jq -r '.tool_input.file_path // empty' 2>/dev/null || true)"
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[[ -z "$FILE_PATH" ]] && exit 0
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# Resolve ~ to HOME
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FILE_PATH="${FILE_PATH/#\~/$HOME}"
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# Block writes to Claude Code auto-memory files
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if [[ "$FILE_PATH" =~ /.claude/projects/.+/memory/.*\.md$ ]]; then
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echo "BLOCKED: Do not write agent learnings to ~/.claude/projects/*/memory/ — this is a runtime-specific silo."
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if [[ -n "${OPENBRAIN_URL:-}" ]]; then
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echo "Use OpenBrain instead: MCP 'capture' tool or REST POST ${OPENBRAIN_URL%/}/v1/thoughts"
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else
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echo "Use OpenBrain instead: the 'capture' MCP tool (set OPENBRAIN_URL for the REST endpoint)."
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fi
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echo "File blocked: $FILE_PATH"
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exit 2
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fi
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exit 0
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