session-manager

A fallback skill for recording development sessions and restoring project context from an Obsidian vault, a folder of linked notes. It handles explicit resume, handoff, status, and end-of-session requests when automatic capture is unavailable.

In plain words
What is it for?
Use it to reload project notes, log the end of a session, or manage handoffs and status updates across development projects.
Why use it?
It helps preserve what happened during a coding session so work can be resumed without relying on memory or repeating setup steps.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/enakoneschniy/claude-dev-stack/session-manager
Any agent
npx skills add Enakoneschniy/claude-dev-stack --skill session-manager
Clone the repo
git clone --depth 1 https://github.com/Enakoneschniy/claude-dev-stack

Made for: Claude Code, Codex.

Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,137 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00108 $0.02137
Opus 5 $0.00054 $0.01069
Sonnet 5 $0.00022 $0.00427
Haiku 4.5 $0.00011 $0.00214

Measured 3d ago against content hash 6059423c3613, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

session-manager scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/session-manager/SKILL.md · 220 lines

How it starts

The opening of the file, as written. The whole thing — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Session Manager Skill

Context is loaded at SessionStart by hooks/session-start-context.sh. This skill only handles end-of-session logging (/end) and explicit resume requests (/resume).

Manage development session lifecycle for multi-project work. Eliminates Claude Code "amnesia" by maintaining session logs and project context in an Obsidian vault.

Vault Location

Default: ~/vault/ Override with env var: VAULT_PATH

Commands

/resume

Explicit re-load of project context. The SessionStart hook (hooks/session-start-context.sh) already loads context at session start — use this command only to force a re-read mid-session (e.g., after manually editing context.md or after switching projects).

VAULT="${VAULT_PATH:-$HOME/vault}"
PROJECT_NAME=$(basename "$(git rev-parse --show-toplevel 2>/dev/null || pwd)")
PROJECT_DIR="$VAULT/projects/$PROJECT_NAME"
CURRENT_DIR=$(git rev-parse --show-toplevel 2>/dev/null || pwd)

# SSR-01: if the SessionStart hook already loaded context <60 min ago,
# skip redundant cat — context is already in the model's prompt.
MARKER="$CURRENT_DIR/.claude/.session-loaded"
if [ -f "$MARKER" ]; then
  NOW=$(date +%s)
  MTIME=$(stat -f %m "$MARKER" 2>/dev/null || stat -c %Y "$MARKER" 2>/dev/null || echo 0)
  AGE=$(( NOW - MTIME ))
  if [ "$AGE" -lt 3600 ] && [ "$AGE" -ge 0 ]; then
    echo "📋 Context pre-loaded at $(cat "$MARKER" 2>/dev/null) by SessionStart hook — skipping redundant cat."
    return 0 2>/dev/null || exit 0
  fi
fi

cat "$PROJECT_DIR/context.md" 2>/dev/null || echo "No context.md found for $PROJECT_NAME"

# Last 3 session logs
for f in $(ls -t "$PROJECT_DIR/sessions/"*.md 2>/dev/null | head -3); do
  echo "=== $(basename "$f") ==="
  cat "$f"
  echo ""
done

/end or /done

Create session log and update context.

PROJECT_NAME=$(basename $(git rev-parse --show-toplevel 2>/dev/null || pwd))
VAULT=${VAULT_PATH:-~/vault}
PROJECT_DIR="$VAULT/projects/$PROJECT_NAME"
SESSION_FILE="$PROJECT_DIR/sessions/$(date +%Y-%m-%d)-SESSION_SLUG.md"

# Create session log
cat > "$SESSION_FILE" << 'EOF'
# Session: DATE — DESCRIPTION

## Что сделано
- (list concrete changes: files modified, features added, bugs fixed)

## Решения
- (architectural decisions made, if any)

## TODO на следующую сессию
- [ ] (specific actionable items)

## Проблемы
- (bugs encountered, workarounds used, tech debt noted)

## Изменённые файлы
- (list key files that were modified)

## Зависимости
- (new packages added, version changes)
EOF

# Update context.md "Session History" section (D-01, D-02)
# Invokes the same Node wrapper the Stop hook uses — idempotent by filename.
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "$(git rev-parse --show-toplevel 2>/dev/null || pwd)" && pwd)"
UPDATER="$REPO_ROOT/hooks/update-context.mjs"
if [ -f "$UPDATER" ]; then
  VAULT_PATH="$VAULT" CDS_PROJECT_NAME="$PROJECT_NAME" \
    node "$UPDATER" "$(basename "$SESSION_FILE")" 2>/dev/null || true
fi

# ── Auto-ADR Capture (Phase 26, ADR-02) ────────────────────────
# Scans the session transcript and writes architectural decisions to vault.
# Fail-open: never blocks /end if the bridge errors.
ADR_BRIDGE="$REPO_ROOT/lib/adr-bridge-session.mjs"
if [ -f "$ADR_BRIDGE" ]; then
  # SESSION_ID may be substituted by Claude from its runtime context.
  # If unset, the bridge falls back to most-recent-mtime JSONL detection.
  ADR_RESULT=$(VAULT_PATH="$VAULT" CDS_PROJECT_NAME="$PROJECT_NAME" \
    node "$ADR_BRIDGE" \
    --session-log "$(basename "$SESSION_FILE")" \
    --cwd "$REPO_ROOT" \
    ${SESSION_ID:+--session-id "$SESSION_ID"} \
    2>/dev/null) || ADR_RESULT='{"newAdrs":[],"superseded":[],"error":"bridge failed"}'
  # ADR_RESULT is valid JSON: {"newAdrs":[...],"superseded":[...],"error":null|string}
  # Claude reads this variable and formats a one-line summary for the user.
  echo "$ADR_RESULT"
fi
# ────────────────────────────────────────────────────────────

Read the full file on GitHub · 220 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 220 lines · 108 tokens per session scan A 6059423c3613

Subscribe to this mod's changes

session-manager is a skill published in the GitHub repository Enakoneschniy/claude-dev-stack (5 stars, last pushed 4mo ago), licensed MIT. It adds 108 tokens to every session and 2,137 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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