Features:
- New UsageLogger utility that writes usage metrics to daily JSONL files
- Captures token counts, costs, timing, and cache metrics from SDK result messages
- Usage logs stored in ~/.claude-mem/usage-logs/ (one file per day)
- Added analyze-usage.js script for analyzing usage patterns
Usage data captured:
- Token counts (input, output, cache creation, cache read)
- Total cost in USD per API call
- Duration metrics (total and API time)
- Number of turns per session
- Session and project attribution
Analysis script features:
- Aggregates totals by project and model
- Shows cache hit rates and savings
- Displays cost breakdowns and averages
- npm scripts: usage:analyze and usage:today
Files:
- src/utils/usage-logger.ts (new)
- src/services/worker-service.ts (modified - captures SDK result messages)
- scripts/analyze-usage.js (new)
- package.json (added usage:* npm scripts)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Implemented `findClaudePath` function to determine the path of the Claude executable using environment variables or system commands (`which` for Unix/Mac and `where` for Windows).
- Integrated the `findClaudePath` function into the SDK worker and worker service to ensure the correct executable path is used when running the SDK agent.
- Enhanced error handling and logging for better debugging and user feedback regarding the executable path.
Critical bugfix for NOT NULL constraint violation.
Problem:
- Worker service calls getSessionById(sessionDbId) to fetch session data
- Worker then uses dbSession.claude_session_id to create ActiveSession
- But getSessionById was NOT selecting claude_session_id from database
- Result: claudeSessionId = undefined in worker
- Caused: "NOT NULL constraint failed: sdk_sessions.claude_session_id" errors
- Impact: Observations and summaries couldn't be stored
Root cause:
- SessionStore.getSessionById() SQL query missing claude_session_id column
- Line 710-713: "SELECT id, sdk_session_id, project, user_prompt"
- Should be: "SELECT id, claude_session_id, sdk_session_id, project, user_prompt"
Fix:
- Added claude_session_id to SELECT query in getSessionById
- Updated return type to include claude_session_id: string
- Now worker correctly receives claude_session_id from database
- Session ID from hook flows properly through entire system
Files changed:
- src/services/sqlite/SessionStore.ts (getSessionById method)
Testing:
- Build succeeded
- Ready for PM2 restart and live testing
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Co-Authored-By: Claude <noreply@anthropic.com>
- Updated session initialization to retrieve claude_session_id instead of sdk_session_id.
- Removed redundant comments and code related to sdk_session_id handling.
- Simplified session creation logic by directly using values from the database.
- Cleaned up message handling logic to focus on assistant messages and removed unnecessary checks for system init messages.
- Added logging of received content length and a preview for debugging purposes.
- Introduced detailed logging for summary parsing, including flags for summary components.
- Improved warning logging when no summary tags are found, including a content sample.
- Updated success message for stored summaries to be more descriptive.
Improvements:
- Enhanced null handling for empty/whitespace fields
- Ensures clean null values in database instead of empty strings
- Improves query efficiency and data consistency
Testing:
- Added comprehensive regression test suite (49 tests)
- Tests v4.2.5 summary fixes and v4.2.6 observation fixes
- Tests edge cases: missing fields, empty fields, whitespace
- New test script: npm run test:parser
- All tests passing with 100% coverage
Code Quality:
- Removed unused extractFileArray() function
- Improved function documentation
- TypeScript diagnostics clean
Technical Details:
- Updated src/sdk/parser.ts extractField function
- Created src/sdk/parser.test.ts regression test suite
- Updated package.json to v4.2.7
- Updated CLAUDE.md with version history
- All changes backward compatible
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Co-Authored-By: Claude <noreply@anthropic.com>
Critical Bugfix:
- Fixed overly defensive observation validation blocking observations from being saved
- Parser now NEVER skips observations - always saves them
- Invalid or missing type defaults to "change" (generic catch-all type)
- Removed validation requiring title, subtitle, and narrative fields
- Prevents critical data loss - partial observations better than no observations
Impact:
- Before: Missing title, subtitle, OR narrative caused entire observation to be discarded
- After: ALL observations preserved regardless of field completeness
- Even partial observations contain valuable data: concepts, files_read, files_modified, facts
- LLMs make mistakes - system must be resilient and save everything
- Consistent with v4.2.5 summary fix
Technical changes:
- Updated src/sdk/parser.ts:52-67 to never skip observations
- Uses "change" as fallback type for invalid/missing types (no schema change)
- Updated ParsedObservation interface to allow null for title, subtitle, narrative
- Updated SessionStore.storeObservation signature to accept nullable fields
- Updated built worker-service.cjs
- Bumped version to 4.2.6 in all metadata files
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Co-Authored-By: Claude <noreply@anthropic.com>
- Removed validation for required fields in parseSummary function.
- Added a note emphasizing the importance of saving the summary even if some fields are missing.
Improvements:
- Removed optional skip_summary functionality (summaries now always generated)
- Clarified that summaries are mid-session checkpoints, not session endings
- Improved request field instructions to better form descriptive titles
- Changed wording from "discovered" to "learned" for consistency
Technical changes:
- Updated src/sdk/prompts.ts summary prompt
- Removed "WHEN NOT TO SUMMARIZE" section
- Added clarifying footer text about ongoing sessions
- Updated built worker-service.cjs
- Bumped version to 4.2.4 in all metadata files
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Co-Authored-By: Claude <noreply@anthropic.com>
- Changed the title of the summary prompt to "THIS REQUEST'S SUMMARY" for better context.
- Revised instructions to focus on summarizing what was built/fixed/deployed/configured, rather than the observation process.
- Clarified when not to summarize, emphasizing conversational requests and trivial inquiries.
- Updated examples to better illustrate good summary practices.
Added "WHEN NOT TO SUMMARIZE" section to buildSummaryPrompt that instructs the SDK to skip creating summaries for:
- Work already covered in previous prompts (prevents duplicates)
- Conversational banter with no deliverables
- Trivial requests (questions, status checks)
- Meta-discussions about memory system without shipped changes
Implementation:
- src/sdk/prompts.ts: Added WHEN NOT TO SUMMARIZE section with <skip_summary> output format
- src/sdk/parser.ts: Added skip_summary detection before parsing full summary XML
- src/sdk/parser.ts: Fixed observation type validation to include all 6 types (bugfix, feature, refactor, change, discovery, decision)
This should eliminate the duplicate summaries like the three "restore 6 types" summaries we saw for session d9137878.
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Co-Authored-By: Claude <noreply@anthropic.com>
Restored full type system: bugfix, feature, refactor, change, discovery, decision.
This enables more precise search queries like "show all bugfixes in auth" vs generic "show all changes".
Also updated README to reflect current behavior (10 summaries with three-tier verbosity).
Changes:
- prompts.ts: Expanded type field from 3 to 6 types with clear definitions
- CLAUDE.md: Fixed context hook description (3 → 10 summaries)
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Co-Authored-By: Claude <noreply@anthropic.com>
Updated SDK prompts to distinguish between deliverables (what was built/shipped) vs meta-operations (what the memory system is doing). This prevents self-referential pollution like "Process tool executions" instead of actual coding tasks like "Fix authentication bug".
Changes:
- buildInitPrompt: Added deliverable-focused framing with contrastive examples
- buildSummaryPrompt: Injected user's original prompt + explicit examples
- Added verb guidance (implemented/fixed/deployed vs analyzed/tracked/stored)
- Added "NOW DOES" present-tense capability framing
Works across all project types: dev, DevOps, docs, infrastructure, research, config.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added `claudeSessionId` to the `ActiveSession` interface to store the real Claude Code session ID.
- Updated session initialization to fetch the real Claude Code session ID from the database.
- Modified session creation logic to ensure the real session ID is used consistently throughout the worker service.
- Adjusted message generation to utilize the real session ID instead of a placeholder.
- Added functionality to automatically create a session record in the database if it does not exist when storing observations or session summaries.
- Updated `storeObservation` and `storeSummary` methods to include checks for existing session records and insert new records as needed.
- Added logging for auto-created session records for better traceability.
- Added functionality to save raw user prompts for full-text search in the newHook function.
- Introduced new search endpoint 'search_user_prompts' to retrieve user prompts using FTS5.
- Created UserPromptRow and UserPromptSearchResult types for handling user prompt data.
- Implemented searchUserPrompts method in SessionSearch class to perform FTS5 queries.
- Created user_prompts table with FTS5 support and necessary triggers for data synchronization.
- Updated SessionStore to include methods for saving user prompts and managing the new table.
The worker was still returning 404 "Session not found" when trying to add
observations or summaries. This happened if:
- Worker restarted (sessions lost from memory)
- Race condition where observations arrive before /init
- Session continued after /exit
Changes:
- handleObservation: Auto-create session if not in memory map
- handleSummarize: Auto-create session if not in memory map
This completes the "no validation" philosophy: worker accepts any session_id
and auto-creates the session state if needed. Saves ALL data without blockage.
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Co-Authored-By: Claude <noreply@anthropic.com>
Root cause: Hooks provide session_id as the source of truth. We were adding
unnecessary validation (checking if sessions exist, checking status, etc.)
which caused 409 conflicts when continuing sessions after /exit.
Changes:
1. worker-service.ts: Removed 409 "Session already exists" check in handleInit
2. SessionStore.ts: Made createSDKSession idempotent using INSERT OR IGNORE
3. new-hook.ts: Simplified to just call createSDKSession - no findActiveSDKSession,
no reactivateSession logic, no status management
4. save-hook.ts: Removed session validation, use fixed port instead of session.worker_port
5. summary-hook.ts: Removed session validation, use fixed port instead of session.worker_port
Philosophy: Hooks manage lifecycle, we just save data with whatever session_id
they give us. No validation, no status checks, no guessing.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Filter out observation type from concepts array in parseObservations function to ensure types and concepts are treated as separate dimensions. Added logging for removed types.
- Update prompts documentation to clarify that the observation type must not be included in the concepts array.
- Modify search-server to provide clearer guidance on result limits, emphasizing starting with smaller limits to avoid exceeding token limits.
- Refactor SessionSearch methods to accept options for limit, offset, and orderBy parameters, improving flexibility in querying observations by concept and type.
Changed summary prompts to generate discrete per-request summaries instead of cumulative session summaries. This provides better chronological memory where each summary is a clean unit representing one request/response cycle.
Changes:
- Renamed buildFinalizePrompt() to buildSummaryPrompt() in src/sdk/prompts.ts
- Updated prompt text to focus on "THIS REQUEST" rather than "this session"
- Updated all import and function call sites in worker-service.ts and worker.ts
- Added IMPORTANT warning to emphasize request-level scope
Expected behavior: Each summary will now describe only what happened during that specific request, eliminating cumulative recaps.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Updated contextHook to support colorized output for terminal and JSON format for hooks.
- Introduced ANSI color codes for improved readability in terminal output.
- Modified the output structure to include session details with color formatting.
- Added a new method in SessionStore to aggregate files read and modified from observations for a session.
- Improved error handling for JSON parsing of file data in the new method.
Alex Newman