Borrowing it
Nothing to install: this file belongs to matrixorigin/memoria. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/matrixorigin/memoria/main/.kiro/steering/session-lifecycle.mdgit clone --depth 1 https://github.com/matrixorigin/memoriaWrote 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/instructions/matrixorigin/memoria/session-lifecycle)<a href="https://agentmods.dev/instructions/matrixorigin/memoria/session-lifecycle"><img src="https://agentmods.dev/badge/instructions/matrixorigin/memoria/session-lifecycle/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/instructions/matrixorigin/memoria/session-lifecycle"><img src="https://agentmods.dev/badge/instructions/matrixorigin/memoria/session-lifecycle.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 | $0.00741 | $0.00741 |
| Opus 5.5 | $0.00296 | $0.00296 |
| Sonnet 5.5 | $0.00148 | $0.00148 |
| Haiku 4.5 | $0.00074 | $0.00074 |
Grade A, and why
session-lifecycle 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Session Lifecycle Management
Systematic memory management across conversation phases: bootstrap, mid-session, and wrap-up.
Phase 1: Conversation Start (Bootstrap)
Before your first response, run a multi-query bootstrap to load full context:
- Primary query — derive from user's message:
memory_retrieve(query="<semantic extraction>") - Active goals —
memory_search(query="GOAL ACTIVE")(if user's message references ongoing work, a previous task, or doesn't start a clearly new topic) - User profile —
memory_profile()(if user asks about preferences or you need style context)
Combine retrieved context into a mental model. Flag anything that looks stale (e.g., "Currently debugging X" from days ago).
session_id: If the user's tool provides a session ID, pass it to memory_retrieve and memory_store throughout the conversation. This enables episodic memory and per-session retrieval boosting.
Phase 2: Mid-Session (Active Work)
Re-retrieval triggers
Call memory_retrieve again mid-conversation when:
- User shifts to a completely different topic
- You need context about something not covered in the initial bootstrap
- User references a past decision or preference you don't have loaded
Store cadence
- Don't batch-store at the end. Store facts as they emerge — this gives each memory accurate timestamps.
- One fact per
memory_storecall. Don't combine unrelated facts into one memory.
Working memory discipline (when to store as working, when to promote/purge) is defined in memory.md — follow those rules here.
Phase 3: Conversation End (Wrap-Up)
When the conversation is winding down (user says thanks, goodbye, or stops engaging):
1. Clean up working memories
memory_purge(topic="<task keyword>", reason="session complete")
Only purge working memories for tasks that are actually done. Leave active task working memories for next session.
2. Promote durable findings
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 · 81 lines · 741 tokens per session scan A 8a0d87099d48
session-lifecycle is an instructions file published in the GitHub repository matrixorigin/memoria (623 stars, last pushed 2d ago), licensed Apache-2.0. It adds 741 tokens to every session, about $0.0030 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 2026-09-08.
session-lifecycle compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| session-lifecyclematrixorigin/memoria | Instructions file | 623 | 2d ago | Apache-2.0 | A | 741 | Kiro |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |