name: remembering description: Advanced memory operations reference. Basic patterns (profile loading, simple recall/remember) are in project instructions. Consult this skill for background writes, memory versioning, complex queries, and edge cases. metadata: version: 0.14.1

⚠️ IMPORTANT FOR CLAUDE CODE AGENTS Before working with this skill, read CLAUDE.md in this directory. It contains critical development context, import patterns, and instructs you to use Muninn to track work on Muninn (meta-usage pattern).

Remembering - Advanced Operations

Basic patterns are in project instructions. This skill covers advanced features and edge cases.

Two-Table Architecture

Table	Purpose	Growth
`config`	Stable operational state (profile + ops + journal)	Small, mostly static
`memories`	Timestamped observations	Unbounded

Config loads fast at startup. Memories are queried as needed.

Boot Sequence

Load context at conversation start to maintain continuity across sessions.

Optimized: Compressed Boot (Recommended)

Use boot() for fast startup (~150ms):

from remembering import boot
print(boot())

Output: Complete profile and ops values for full context at boot.

Performance:

Execution: ~150ms (single HTTP request)
Populates local cache for fast subsequent recall()

Journal System

Temporal awareness via rolling journal entries in config. Inspired by Strix's journal.jsonl pattern.

from remembering import journal, journal_recent, journal_prune

# Record what happened this interaction
journal(
    topics=["project-x", "debugging"],
    user_stated="Will review PR tomorrow",
    my_intent="Investigating memory leak"
)

# Boot: load recent entries for context
for entry in journal_recent(10):
    print(f"[{entry['t'][:10]}] {entry.get('topics', [])}: {entry.get('my_intent', '')}")

# Maintenance: keep last 40 entries
pruned = journal_prune(keep=40)

Entry structure:

t: ISO timestamp
topics: array of tags (enables filtering at scale)
user_stated: commitments/plans user verbalized
my_intent: current goal/task

Key insight from Strix: "If you didn't write it down, you won't remember it next message."

Config Table

Key-value store for profile (behavioral), ops (operational), and journal (temporal) settings.

from remembering import config_get, config_set, config_delete, config_list, profile, ops

# Read
config_get("identity")                    # Single key
profile()                                  # All profile entries
ops()                                      # All ops entries
config_list()                              # Everything

# Write
config_set("new-key", "value", "profile")  # Category: 'profile', 'ops', or 'journal'
config_set("skill-foo", "usage notes", "ops")

# Write with constraints (new!)
config_set("bio", "Short bio here", "profile", char_limit=500)  # Enforce max length
config_set("core-rule", "Never modify this", "ops", read_only=True)  # Mark immutable

# Delete
config_delete("old-key")

Config constraints:

char_limit: Enforces maximum character count on writes (raises ValueError if exceeded)
read_only: Prevents modifications (raises ValueError on attempted updates)

Memory Type System

Type is required on all write operations. Valid types:

Type	Use For
`decision`	Explicit choices: prefers X, always/never do Y
`world`	External facts: tasks, deadlines, project state
`anomaly`	Errors, bugs, unexpected behavior
`experience`	General observations, catch-all

Note: profile is no longer a memory type—use config_set(key, value, "profile") instead.

from remembering import TYPES  # {'decision', 'world', 'anomaly', 'experience'}

Background Writes (Agentic Pattern)

v0.6.0: Unified API with sync parameter. Use remember(..., sync=False) for background writes:

from remembering import remember, flush

# Background writes (non-blocking, returns immediately)
remember("User's project uses Python 3.12 with FastAPI", "world", sync=False)
remember("Discovered: batch insert reduces latency 70%", "experience",
         tags=["optimization"], sync=False)

# Ensure all pending writes complete before conversation end
flush()  # Blocks until all background writes finish

Backwards compatibility: remember_bg() still works (deprecated, calls remember(..., sync=False)):

from remembering import remember_bg
remember_bg("Quick note", "world")  # Same as remember(..., sync=False)

When to use sync=False (background):

Storing derived insights during active work
Memory write shouldn't block response
Agentic pattern where latency matters

When to use sync=True (blocking, default):

User explicitly requests storage
Need confirmation of write success
Critical memories (handoffs, decisions)
End of workflow when durability matters

⚠️ IMPORTANT - Cache Sync Guarantee:

If you use sync=False for ANY writes in a conversation, you MUST call flush() before the conversation ends
This ensures all background writes persist to the database before the ephemeral container is destroyed
Single-user context: no concurrent write conflicts, all writes will succeed
Prefer sync=True (default) for critical writes to guarantee immediate persistence

Memory Versioning (Patch/Snapshot)

Supersede without losing history:

from remembering import supersede

# User's preference evolved
original_id = "abc-123"
supersede(original_id, "User now prefers Python 3.12", "decision", conf=0.9)

Creates new memory with refs=[original_id]. Original preserved but not returned in default queries. Trace evolution via refs chain.

Complex Queries

Multiple filters, custom confidence thresholds:

from remembering import recall

# High-confidence decisions only
decisions = recall(type="decision", conf=0.85, n=20)

# Recent anomalies for debugging context
bugs = recall(type="anomaly", n=5)

# Search with tag filter (any match)
tasks = recall("API", tags=["task"], n=15)

# Require ALL tags (tag_mode="all")
urgent_tasks = recall(tags=["task", "urgent"], tag_mode="all", n=10)

Date-Filtered Queries

Query memories by temporal range:

from remembering import recall_since, recall_between

# Get memories after a specific timestamp
recent = recall_since("2025-12-01T00:00:00Z", n=50)
recent_bugs = recall_since("2025-12-20T00:00:00Z", type="anomaly", tags=["critical"])

# Get memories within a time range
december = recall_between("2025-12-01T00:00:00Z", "2025-12-31T23:59:59Z", n=100)
sprint_mems = recall_between("2025-12-15T00:00:00Z", "2025-12-22T00:00:00Z",
                             type="decision", tags=["sprint-5"])

Use cases:

Review decisions made during a project phase
Analyze bugs discovered in a time window
Track learning progress over specific periods
Build time-based memory summaries

Notes:

Timestamps are exclusive (use > and < not >= and <=)
Supports all standard filters: search, type, tags, tag_mode
Sorted by timestamp descending (newest first)
Excludes soft-deleted and superseded memories

Therapy Helpers

Support for reflection and memory consolidation workflows:

from remembering import therapy_scope, therapy_session_count

# Get unprocessed memories since last therapy session
cutoff_time, unprocessed_memories = therapy_scope()
# cutoff_time: timestamp of last therapy session (or None if no sessions)
# unprocessed_memories: all memories created after that timestamp

# Count how many therapy sessions have been recorded
count = therapy_session_count()

Therapy session workflow:

Call therapy_scope() to get unprocessed memories
Analyze and consolidate memories (group patterns, extract insights)

Record therapy session completion:

remember(f"Therapy Session #{count+1}: Consolidated {len(unprocessed)} memories...",
         "experience", tags=["therapy"])

Pattern detection example:

cutoff, mems = therapy_scope()
by_type = group_by_type(mems)  # See Analysis Helpers below

print(f"Since {cutoff}:")
print(f"  {len(by_type.get('decision', []))} decisions")
print(f"  {len(by_type.get('anomaly', []))} anomalies to investigate")

Analysis Helpers

Group and organize memories for pattern detection:

from remembering import group_by_type, group_by_tag

# Get memories and group by type
memories = recall(n=100)
by_type = group_by_type(memories)
# Returns: {"decision": [...], "world": [...], "anomaly": [...], "experience": [...]}

# Group by tags
by_tag = group_by_tag(memories)
# Returns: {"ui": [...], "bug": [...], "performance": [...], ...}
# Note: Memories with multiple tags appear under each tag

Use cases:

Pattern detection: Find clusters of related memories
Quality analysis: Identify over/under-represented memory types
Tag hygiene: Discover inconsistent tagging patterns
Therapy sessions: Organize unprocessed memories before consolidation

Example - Find overused tags:

mems = recall(n=200)
by_tag = group_by_tag(mems)
sorted_tags = sorted(by_tag.items(), key=lambda x: len(x[1]), reverse=True)
print("Top tags:")
for tag, tagged_mems in sorted_tags[:5]:
    print(f"  {tag}: {len(tagged_mems)} memories")

FTS5 Search with Porter Stemmer (v0.13.0)

Full-text search uses FTS5 with Porter stemmer for morphological variant matching:

from remembering import recall

# Searches match word variants automatically
# "running" matches "run", "runs", "runner"
# "beads" matches "bead"
results = recall("running performance")

# Query expansion fallback
# When FTS5 returns < 3 results, automatically extracts tags from
# partial results and searches for related memories
sparse_results = recall("rare term")  # Auto-expands if < 3 matches

How it works:

FTS5 tokenizer: porter unicode61 handles stemming
BM25 ranking for relevance scoring
Query expansion extracts tags from partial results when < 3 matches found
Composite ranking: BM25 × salience × recency × access patterns

Soft Delete

Remove without destroying data:

from remembering import forget

forget("memory-uuid")  # Sets deleted_at, excluded from queries

Memories remain in database for audit/recovery. Hard deletes require direct SQL.

Memory Quality Guidelines

Write complete, searchable summaries that standalone without conversation context:

✓ "User prefers direct answers with code examples over lengthy conceptual explanations"

✗ "User wants code" (lacks context, unsearchable)

✗ "User asked question" + "gave code" + "seemed happy" (fragmented, no synthesis)

Handoff Convention

Cross-environment work coordination with version tracking and automatic completion marking.

Creating Handoffs

From Claude.ai (web/mobile) - cannot persist file changes:

from remembering import remember

remember("""
HANDOFF: Implement user authentication

## Context
User wants OAuth2 + JWT authentication for the API.

## Files to Modify
- src/auth/oauth.py
- src/middleware/auth.py
- tests/test_auth.py

## Implementation Notes
- Use FastAPI OAuth2PasswordBearer
- JWT tokens with 24h expiry
- Refresh token support
...
""", "world", tags=["handoff", "pending", "auth"])

Important: Tag with ["handoff", "pending", ...] so it appears in handoff_pending() queries.

Handoff structure:

Title: Brief summary of what needs to be done
Context: Why this work is needed
Files to Modify: Specific paths
Implementation Notes: Code patterns, constraints, dependencies

Completing Handoffs

From Claude Code - streamlined workflow:

from remembering import handoff_pending, handoff_complete

# Get pending work (excludes completed handoffs)
pending = handoff_pending()
print(f"{len(pending)} pending handoff(s)")

for h in pending:
    print(f"[{h['created_at'][:10]}] {h['summary'][:80]}")

# Complete a handoff (automatically tags with version)
handoff_id = pending[0]['id']
handoff_complete(
    handoff_id,
    "COMPLETED: Implemented boot() function with batched queries...",
    # version auto-detected from VERSION file, or specify: "0.5.0"
)

What happens:

Original handoff is superseded (won't appear in future handoff_pending() queries)
Completion record created with tags ["handoff-completed", "v0.5.0"]
Version tracked automatically from VERSION file
Full history preserved via supersede() chain

Querying History

from remembering import recall

# See what was completed in a specific version
v050_work = recall(tags=["handoff-completed", "v0.5.0"])

# See all completion records
completed = recall(tags=["handoff-completed"], n=50)

Use when:

Working in Claude.ai (web/mobile) without file write access
Planning work that needs Claude Code execution
Coordinating between environments
Leaving detailed instructions for future sessions

Export/Import for Portability

Backup or migrate Muninn state across environments:

from remembering import muninn_export, muninn_import
import json

# Export all state to JSON
state = muninn_export()
# Returns: {"version": "1.0", "exported_at": "...", "config": [...], "memories": [...]}

# Save to file
with open("muninn-backup.json", "w") as f:
    json.dump(state, f, indent=2)

# Import (merge with existing data)
with open("muninn-backup.json") as f:
    data = json.load(f)
stats = muninn_import(data, merge=True)
print(f"Imported {stats['config_count']} config, {stats['memory_count']} memories")

# Import (replace all - destructive!)
stats = muninn_import(data, merge=False)

Notes:

merge=False deletes all existing data before import (use with caution!)
Memory IDs are regenerated on import to avoid conflicts
Returns stats dict with counts and any errors

Edge Cases

Empty recall results: Returns [], not an error. Check list length before accessing.

Search literal matching: Current implementation uses SQL LIKE. Searches "API test" matches "API testing" but not "test API" (order matters).

Tag partial matching: tags=["task"] matches memories with tags ["task", "urgent"] via JSON substring search.

Confidence defaults: decision type defaults to 0.8 if not specified. Others default to NULL.

Invalid type: Raises ValueError with list of valid types.

Invalid category: config_set raises ValueError if category not 'profile', 'ops', or 'journal'.

Journal pruning: Call journal_prune() periodically to prevent unbounded growth. Default keeps 40 entries.

Tag mode: tag_mode="all" requires all specified tags to be present. tag_mode="any" (default) matches if any tag present.

Query expansion: When FTS5 returns < 3 results, tags are automatically extracted from partial matches and used to find related memories.

Implementation Notes

Backend: Turso SQLite HTTP API
Token: TURSO_TOKEN environment variable or /mnt/project/turso-token.txt
Two tables: config (KV) and memories (observations)
FTS5 search: Porter stemmer tokenizer with BM25 ranking
HTTP API required (libsql SDK bypasses egress proxy)
Local SQLite cache for fast recall (< 5ms vs 150ms+ network)
Thread-safe for background writes

remembering

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