Kartik
78 lines
2.5 KiB
Bash
Executable File
78 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Hook: PostToolUseFailure (matcher: mcp__mem0__)
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#
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# Fires when a mem0 MCP tool call fails. Logs the failure, bumps telemetry,
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# and injects a retry hint so Claude can recover.
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#
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# Input: JSON on stdin with tool_name, tool_input, tool_error
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# Output: Context injected into Claude's next response (exit 0)
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set -uo pipefail
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if [ -n "${MEM0_DEBUG:-}" ]; then
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mkdir -p "$HOME/.mem0" && exec 2>>"$HOME/.mem0/hooks.log"
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fi
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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INPUT=$(cat)
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TOOL_NAME=$(echo "$INPUT" | jq -r '.tool_name // ""' 2>/dev/null || echo "")
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TOOL_RESULT=$(echo "$INPUT" | jq -r '.tool_error // ""' 2>/dev/null || echo "")
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TOOL_INPUT=$(echo "$INPUT" | jq -c '.tool_input // {}' 2>/dev/null || echo "{}")
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# Extract the short tool name (strip mcp__mem0__ prefix)
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SHORT_NAME="${TOOL_NAME#mcp__mem0__}"
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# Log failure to persistent file for debugging
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mkdir -p "$HOME/.mem0" 2>/dev/null || true
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echo "$(date -u +%Y-%m-%dT%H:%M:%SZ) FAIL $TOOL_NAME: $TOOL_RESULT" >> "$HOME/.mem0/tool-failures.log" 2>/dev/null || true
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# Telemetry (background, fire-and-forget)
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python3 "$SCRIPT_DIR/telemetry.py" tool_failure --tool="$SHORT_NAME" 2>/dev/null &
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# Classify the error
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IS_AUTH_ERROR=""
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IS_RATE_LIMIT=""
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IS_NETWORK_ERROR=""
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if echo "$TOOL_RESULT" | grep -qiE '(401|403|unauthorized|forbidden|invalid.*token|invalid.*key)'; then
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IS_AUTH_ERROR="true"
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elif echo "$TOOL_RESULT" | grep -qiE '(429|rate.?limit|too many requests|quota)'; then
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IS_RATE_LIMIT="true"
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elif echo "$TOOL_RESULT" | grep -qiE '(timeout|connect|ECONNREFUSED|network|DNS|resolve)'; then
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IS_NETWORK_ERROR="true"
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fi
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cat <<EOF
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## mem0 tool failure: \`$SHORT_NAME\`
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**Error:** $TOOL_RESULT
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**Input:** \`$TOOL_INPUT\`
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EOF
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if [ -n "$IS_AUTH_ERROR" ]; then
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cat <<'EOF'
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**Cause:** Authentication failure. MEM0_API_KEY may be invalid or expired.
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**Action:** Tell the user their API key needs to be checked. Get a new key at https://app.mem0.ai/dashboard/api-keys
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Do NOT retry — it will fail again with the same key.
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EOF
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elif [ -n "$IS_RATE_LIMIT" ]; then
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cat <<'EOF'
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**Cause:** Rate limit hit.
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**Action:** Wait a few seconds, then retry the same call. If it fails again, reduce the number of parallel mem0 calls.
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EOF
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elif [ -n "$IS_NETWORK_ERROR" ]; then
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cat <<'EOF'
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**Cause:** Network connectivity issue reaching mem0 API.
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**Action:** Retry once. If it fails again, inform the user and continue without memory context.
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EOF
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else
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cat <<EOF
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**Action:** Retry the \`$SHORT_NAME\` call once. If it fails again, continue without memory context and inform the user.
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EOF
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fi
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exit 0
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