aget-open-session

aget-open-session is a skill for Claude Code, Codex from aget-framework/aget. It costs 34 tokens per session (1,372 once invoked), scanned A, original, Apache-2.0.

A session-opening workflow for coding agents. It restores relevant context from earlier sessions, checks basic health, records who opened the session, and proposes an agenda.

In plain words
What is it for?
Use it at the start of an AGET session to wake the agent, recover prior context, check readiness, and establish the session.
Why use it?
It reduces the time spent reconstructing unfinished work and helps surface pending tasks and problems before work begins.

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/aget-framework/aget/aget-open-session
Any agent
npx skills add aget-framework/aget --skill aget-open-session
Clone the repo
git clone --depth 1 https://github.com/aget-framework/aget

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for aget-open-session

README.md
[![agentmods](https://agentmods.dev/badge/skills/aget-framework/aget/aget-open-session.svg)](https://agentmods.dev/skills/aget-framework/aget/aget-open-session)
Your own site
<a href="https://agentmods.dev/skills/aget-framework/aget/aget-open-session"><img src="https://agentmods.dev/badge/skills/aget-framework/aget/aget-open-session.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,372 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 $0.00034 $0.01372
Opus 5 $0.00017 $0.00686
Sonnet 5 $0.00007 $0.00274
Haiku 4.5 $0.00003 $0.00137

Measured 5d ago against content hash 9d93dd26e19d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aget-open-session 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 5d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/skills/aget-open-session/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/aget-open-session

Open a session with context-aware establishment. Orchestrates wake-up, then adds context recovery, health gating, and session provenance.

Purpose

The current /aget-wake-up skill runs wake_up.py and displays agent identity — but leaves context recovery to the principal. Open-session transforms session initialization from identity display into context-aware session establishment by adding: prior session context recovery, pre-session health gating, and opened_by provenance (mirroring closed_by from SP-008).

Evidence: SP-008 (close-session) validated composition architecture with cross-fleet evidence (8 sessions). L562 (rename caused 32/32 false-positive drift) confirms composition over rename. L335 (Memory Architecture) specifies 2-minute context recovery target. L670 (Session Quality Assessment Gap). Principal confirmed open/close verb pair (2026-04-10) over start/stop and init/close alternatives.

Input

$ARGUMENTS (none required)

Examples:

  • /aget-open-session — Full open with context recovery
  • open session — Natural language trigger
  • open this session — Natural language trigger

Execution

Phase 1: Wake-Up Delegation

Run wake-up infrastructure as a single Bash call:

Run the wake-up script using the agent's canonical path:

# Try canonical paths in order (agents may have different locations)
if test -f scripts/wake_up.py; then
  python3 scripts/wake_up.py
elif test -f .aget/patterns/session/wake_up.py; then
  python3 .aget/patterns/session/wake_up.py
else
  echo "No wake_up.py found — run manual wake-up"
fi

Optionally log invocation if telemetry script available:

test -f scripts/log_skill_invocation.py && python3 scripts/log_skill_invocation.py --skill aget-open-session --version 0.1.0 --outcome success --duration-seconds 0

This produces agent identity, version, git status, and health check.

Phase 2: Context Recovery

Using Read, Grep, and Glob (no Bash — zero permission cost):

Read the full file on GitHub · 128 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. 5d ago First seen · 128 lines · 34 tokens per session scan A 9d93dd26e19d

Subscribe to this mod's changes

aget-open-session is a skill published in the GitHub repository aget-framework/aget (11 stars, last pushed 5d ago), licensed Apache-2.0. It adds 34 tokens to every session and 1,372 once invoked, about $0.0002 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 2026-08-30.

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