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.
npx skills add conorbronsdon/agent-skills --skill session-managementgit clone --depth 1 https://github.com/conorbronsdon/agent-skillsWrote 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.
[](https://agentmods.dev/skills/conorbronsdon/agent-skills/session-management)<a href="https://agentmods.dev/skills/conorbronsdon/agent-skills/session-management"><img src="https://agentmods.dev/badge/skills/conorbronsdon/agent-skills/session-management/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/conorbronsdon/agent-skills/session-management"><img src="https://agentmods.dev/badge/skills/conorbronsdon/agent-skills/session-management.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00027 | $0.03240 |
| Opus 5.5 | $0.00011 | $0.01296 |
| Sonnet 5.5 | $0.00005 | $0.00648 |
| Haiku 4.5 | $0.00003 | $0.00324 |
Grade A, and why
session-management 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Session Management for Claude Code
A system of four commands that give Claude Code a memory across sessions. Instead of starting every conversation cold, these skills maintain state files that capture what you're working on, what decisions you've made, and what's next.
Invocation: user-only (disable-model-invocation: true) — session lifecycle is timed by you, and the flag keeps this 300-line skill out of ambient context.
Why This Exists
Claude Code conversations are ephemeral — close the terminal and the context is gone. These skills solve that by:
/startloads your project state so Claude knows where you left off/updatesaves progress mid-session without closing/endcaptures the session and proposes durable memory updates before you close/todayruns a morning check-in that catches staleness, surfaces deadlines, and proposes memory updates
The system compounds over time. Session logs become an episodic record. State files stay fresh. Decisions are logged. Nothing falls through the cracks.
Setup
Required file structure
Create these files in your project root (or wherever makes sense for your workflow):
state/
current.md # Active priorities, open threads, recent context
current-log.md # History of past "Last Updated" lines, newest first (auto-created)
decisions.md # Decision log (date, decision, rationale, rejected alternatives)
weekly-priorities.md # What matters this week
blockers.md # Things waiting on external dependencies
heartbeat-log.md # Record of /today check-ins (auto-created)
sessions/
{YYYY-MM-DD}.md # Daily session logs (auto-created)
Minimal state/current.md to start
# Current State
Last updated: [date]
## Active Priorities
1. [Your top priority]
2. [Second priority]
## Active Context
- [Open thread or thing you're working on] *(created M/D)*
## Recently Completed
- [Last thing you finished] *(M/D)*
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 298 lines · 27 tokens per session scan A aacef5b5b9d3
session-management is a skill published in the GitHub repository conorbronsdon/agent-skills (10 stars, last pushed 21d ago), licensed MIT. It adds 27 tokens to every session and 3,240 once invoked, about $0.0001 per session on Opus 5.5. 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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