Without Tempera:                    With Tempera:
┌─────────────┐                  ┌─────────────┐
│  Session 1  │ ──forgotten──>   │  Session 1  │ ──captured──┐
└─────────────┘                  └─────────────┘             │
┌─────────────┐                  ┌─────────────┐             ▼
│  Session 2  │ ──forgotten──>   │  Session 2  │ ◄──recalls──┤
└─────────────┘                  └─────────────┘             │
┌─────────────┐                  ┌─────────────┐             │
│  Session 3  │ ──forgotten──>   │  Session 3  │ ◄──recalls──┘
└─────────────┘                  └─────────────┘
     │                                 │
     ▼                                 ▼
  No learning                    Continuous improvement

┌────────────────────────────────────────────────────────────────┐
│  1. START TASK                                                 │
│     User: "Fix the login redirect bug"                         │
└────────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌────────────────────────────────────────────────────────────────┐
│  2. RETRIEVE MEMORIES                                          │
│     Claude searches: "login redirect bug"                      │
│     Finds: "Fixed similar issue by sanitizing return URLs"     │
│     + Session context: related episodes from the same task     │
└────────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌────────────────────────────────────────────────────────────────┐
│  3. SOLVE FASTER                                               │
│     Claude uses past experience to solve the problem           │
└────────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌────────────────────────────────────────────────────────────────┐
│  4. CAPTURE SESSION                                            │
│     Claude saves: what was done, what worked, what failed      │
│     Auto-links to current session for multi-step tasks         │
└────────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌────────────────────────────────────────────────────────────────┐
│  5. LEARN FROM FEEDBACK                                        │
│     User: "That memory was helpful!"                           │
│     → Episode utility increases                                │
│     → Multi-hop Bellman propagation spreads value               │
│     → Session-linked episodes get boosted                      │
│     → Unhelpful memories fade over time                        │
└────────────────────────────────────────────────────────────────┘

# Clone and build
git clone https://github.com/anvanster/tempera.git
cd tempera
cargo build --release

# Two binaries are created:
# - target/release/tempera      (CLI tool)
# - target/release/tempera-mcp  (MCP server for Claude Code)

cargo install tempera

# Initialize and trigger model download
tempera init

# Output:
# 🔄 Loading embedding model (this may download the model on first run)...
# ✅ Embedding model loaded

claude mcp add tempera --scope user -- /path/to/Tempera/target/release/tempera-mcp

tempera_session_start          # is anything queued from last session?
tempera_brief(files, ...)      # what does tempera know about this exact change?
tempera_retrieve(query)        # then deep-dive into specific episodes

Search:           tempera_retrieve(query: "authentication bug")
List all:         tempera_retrieve(all: true)
Show details:     tempera_retrieve(query: "abc12345")        # episode ID
Cross-project:    tempera_retrieve(query: "sqlx ordering", scope: "cross-project")

User: Fix the login redirect vulnerability

Claude: [Calls tempera_session_start()]
        No pending ask-back — proceeding.

        [Calls tempera_brief(files: ["src/auth.rs", "src/router.rs"],
                             task_type: "bugfix", domain: "auth-middleware")]

        🔴 PENDING ASK-BACK
          Ask the user first: "Should auth run before or after request logging?"

        📋 REASONING TEMPLATE (bugfix / auth-middleware)
          url-redirect validation
            1. Find every redirect target read from request input
            2. Validate against allow-list or treat as untrusted
            3. Add regression test with adversarial input

        ⚠️  TOP CORRECTION CATEGORIES for these files
          - validation_skipped (3×)
          - host_header_trust (2×)

        Tempera says I've been wrong here before in specific ways.
        Let me ask: should auth run before or after logging?

User: Before — we need an auth'd subject for log lines.

Claude: [Implements with URL allow-list, following the template steps]

        Done. [Calls tempera_capture(
          summary: "Fixed login redirect by validating return URL against allow-list",
          outcome: "success",
          validity_scope: "domain:auth-middleware"
        )]
        ✅ Episode saved. (Cross-project — this is an auth-middleware pattern.)

User: That memory was helpful!

Claude: [Calls tempera_feedback(helpful: true, episodes: ["..."])]
        Marked helpful — future retrievals for similar tasks will rank this higher.

# Initialize Tempera
tempera init

# Capture an episode (from a session transcript or interactively)
tempera capture --session /path/to/transcript.md

# Index episodes for semantic search (or re-index)
tempera index [--reindex]

# Search memories — project-scoped by default
tempera retrieve "database connection issues"
tempera retrieve "sqlx pattern" --cross-project       # v0.10.1 — pull from other projects

# Provide feedback
tempera feedback helpful --episodes abc123,def456

# Joint summary of every self-improvement signal for these files
tempera brief --files src/auth.rs,src/router.rs \
              --task-type bugfix --domain auth-middleware

# Include rows from other projects (foreign rows are tagged [from <project>])
tempera brief --files src/store.rs --cross-project

# Show + clear the pending ask-back for this project (if any)
tempera session-start

# History of system-drafted clarifying questions
tempera ask-backs [--pending] [--project P]

# Log a correction the user made
tempera log-correction --category "lifetime annotations" \
                       --description "I assumed &str when &'a str was needed" \
                       --correction "use named lifetime to match trait"

# View the correction log
tempera mistakes [--top 5]              # top categories
tempera mistakes --project tempera      # raw list filtered

# Log a question you should have asked up front
tempera log-should-have-asked --trigger "edit auth middleware" \
                              --question "Which auth provider is wired up?" \
                              --answer "No auth — internal-only service."

# View the should-have-asked log
tempera asks --top 5

# List stored templates
tempera templates list

# Fetch a specific template
tempera templates get --task-type bugfix --domain async-rust

# Manually trigger extraction (otherwise runs in dream cycle)
tempera templates extract --max-usd 0.20

# Per-(task_type, project) verified vs declared rates
tempera calibration --project tempera --task-type bugfix

# Run the full cycle with a budget cap (default $0.50)
tempera dream --max-usd 0.50

# Run one phase, or list available phases
tempera dream --phase reflect
tempera dream --list

# Plan only — show what would happen without making LLM calls
tempera dream --dry-run

# Author yesterday's reflection (Haiku triage + Sonnet authorship if score >= 0.5)
tempera reflect [--date 2026-05-26] [--dry-run]

# Surface active factual contradictions found during dream
tempera contradict --list

# Move an episode forward in the verification chain
tempera advance-verification --episode abc123 --to tests_pass --run-id <id>
tempera advance-verification --episode abc123 --to merged --commit <sha>
tempera advance-verification --episode abc123 --to stable_no_revert --days 30

# Multi-hop Bellman propagation (run weekly)
tempera propagate --temporal

# Prune old / low-value episodes
tempera prune --older-than 90 --min-utility 0.2 --execute

# Stats + trends
tempera stats
tempera trends --project tempera --bucket weekly

# Health check + remediation
tempera doctor [--remediate --yes --target-score 90]

# Eval harness (P@5, R@5, MRR, nDCG@5 against a fixture)
tempera eval run --fixture evals/fixtures/real.jsonl --mode hybrid

# Snapshot / restore the data dir
tempera backup
tempera backup --list
tempera backup --restore 20260524T123456Z

~/.tempera/
├── config.toml              # Configuration (all RL params configurable)
├── episodes/                # Canonical episode JSON
│   └── 2026-01-25/
│       └── <id>.json
├── jobs.sqlite              # SQLite for everything indexable (see below)
├── vectors/                 # Vector index (vectrust embeddings)
├── models/                  # BGE-Small embedding model (~128MB)
├── reflections/             # Daily reflection markdown (v0.7.3)
├── patterns/                # Cross-day pattern pages (v0.7.4)
└── templates/               # Reasoning templates (v0.8.3)

[retrieval]
mode = "hybrid"                  # vector | keyword | hybrid (BM25 + vector fusion)
similarity_weight = 0.3          # Weight for semantic similarity (project mode)
utility_weight = 0.7             # Weight for learned utility (project mode)
hybrid_similarity_weight = 0.85  # RRF-normalized retrieval (hybrid mode)
hybrid_utility_weight = 0.15
recency_weight = 0.0             # Recency (0 = off, opt-in)
recency_halflife_days = 30.0
mmr_lambda = 0.7                 # MMR diversity (0=diverse, 1=relevant)
min_similarity = 0.5             # Filter threshold

[bellman]
gamma = 0.9                      # Discount factor for Bellman updates
alpha = 0.1                      # Learning rate
propagation_threshold = 0.5      # Min similarity for propagation
max_propagation_depth = 2        # Multi-hop depth (hops)
temporal_credit_window_hours = 1

[capture]
auto_capture = true
extract_intent_llm = true        # Use LLM to extract intent + claim + scope
capture_diffs = true
ask_back_on_failure = true       # Draft a clarifying question on Failure/Partial captures (v0.8.5)

[dream]
default_max_usd = 0.50           # Per-cycle budget cap
stable_threshold_days = 30       # Days before Merged → StableNoRevert
triage_model = "claude-haiku-4-5-20251001"
reflect_model = "claude-sonnet-4-6"

# Patterns phase
patterns_lookback_days = 30
patterns_min_evidence = 3
patterns_cluster_threshold = 0.75

# Contradict phase
contradict_top_n = 50
contradict_min_similarity = 0.6
contradict_max_similarity = 0.95
contradict_max_pairs = 30
contradict_min_confidence = 0.7

# Templates phase (v0.8.3)
templates_min_evidence = 3
templates_min_verification_weight = 0.30  # 0.30 = Untested (lenient); 0.60 = Merged

[storage]
max_age_days = 180               # Max episode age for pruning
min_utility_threshold = 0.05     # Min utility to keep
min_retrievals = 2               # Min retrievals before pruning allowed
consolidation_threshold = 0.85   # BKM merge threshold
cluster_threshold = 0.85
stale_age_days = 30
stale_utility_threshold = 0.2

Hop 0: Source episodes (high helpfulness, ≥2 retrievals)
  │
  ▼  γ¹ discount
Hop 1: Similar episodes updated
  │
  ▼  γ² discount
Hop 2: Episodes similar to hop-1 updated
  │
  ▼  Converges when no updates occur

Session abc123:
  ├── Episode 1: "Investigated auth bug" (debug)
  ├── Episode 2: "Found root cause in token validation" (research)
  └── Episode 3: "Fixed token expiry check" (bugfix, success)
       ↓
  Temporal credit flows back to episodes 1 & 2
  Session-linked propagation boosts all 3

verify_advance  →  decay  →  reflect  →  patterns  →  contradict  →  templates
   (free)         (free)   (Sonnet)    (Sonnet)    (Haiku)        (Sonnet)
                          ↓             ↓            ↓             ↓
                  reflections/  patterns/   contradictions  templates/

score = (sim_w × similarity + util_w × utility + rec_w × recency) / (sim_w + util_w + rec_w)

# Nightly: dream cycle (verify_advance + decay + reflect + patterns + contradict + templates)
tempera dream --max-usd 0.50

# Weekly: Propagate utility values (multi-hop with convergence)
tempera propagate --temporal

# Monthly: Clean up old/useless episodes
tempera prune --older-than 90 --min-utility 0.2 --execute

# As needed: Check trends
tempera trends

# As needed: Review and consolidate
# (via MCP) tempera_review(action: "consolidate")

# As needed: health check + auto-remediate
tempera doctor --remediate --yes