synthesis-context-lifecycle SKILL.md skillA
synthesis-context-lifecycle from synthesisengineering/synthesis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add synthesisengineering/synthesis-skills/synthesis-context-lifecycle@v2.2.1Pins v2.2.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- synthesisengineering/synthesis-skills
- Path
skills/synthesis-context-lifecycle/SKILL.md- Versions recorded
- 15
- Latest version
- v2.2.1, committed Oct 30, 2026
- First version recorded
- Sep 6, 2026
- Size
- 6,865 bytes
- Repository stars
- 23
- License
- Apache-2.0
Keep a project's working memory small, current and durable across sessions, harnesses and Macs: CONTEXT, REFERENCE and session logs, session start, mid-session refresh, archiving, edits, deletion units, and the context records doctor.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Context Lifecycle Management AI collaborators start every session with zero context; their effectiveness depends on the context they receive. A single context file grows without bound because it mixes information with different lifecycles. This skill splits a project's memory into three tiers, each with its own budget and update rule, and verifies them with a doctor. ## Binding rules 1. **The project files are the memory.** CONTEXT.md (≤150 lines; ≤80 when completed), REFERENCE.md (stable facts, ≤300), `sessions/YYYY-MM.md` (append-only). Chat, native memory and compaction summaries are not. 2. **Run the Session Start Protocol before substantive work** and show the verification: `date`, then `git log` and `git status` on the project, then CONTEXT.md, the newest session entries, REFERENCE.md. 3. **Refresh on the triggers:** before any time-interval claim, after an hour's pause, every ~25 tool calls, on any drift or compaction signal, before writing a session log. 4. **Archive first, delete second.** Write to sessions/ or REFERENCE.md, verify it is there, then remove it from CONTEXT.md. …
Read the whole file at its exact version.
How to install
mdr add synthesisengineering/synthesis-skills/synthesis-context-lifecycle@sha256:92f39d41f62bb2b9The line at the top of this page pins the label v2.2.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_64f3ljkorx2b5ybm)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 15 versions of this file, between Sep 6, 2026 and Oct 30, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.2.1 latest | 2026-10-30 | a3ca1cd | 6,865 B | A | view · diff |
| v2.2.0 | 2026-10-30 | 99fe9b8 | 6,865 B | A | view · diff |
| v2.1.0 | 2026-10-30 | 38ecf9c | 6,518 B | A | view · diff |
| v2.0.0 | 2026-10-06 | b6a2877 | 5,919 B | A | view · diff |
| v1.22.0 | 2026-10-03 | 2d54cb9 | 27,766 B | A | view · diff |
| v1.22.0 | 2026-09-29 | f980f9e | 18,569 B | A | view · diff |
| v1.21.1 | 2026-09-28 | 6725b62 | 18,093 B | A | view · diff |
| v1.21.0 | 2026-09-27 | 95144f1 | 17,330 B | A | view · diff |
| v1.20.0 | 2026-09-21 | 7ae9f1a | 59,427 B | A | view · diff |
| v1.20.0 | 2026-09-21 | b0146c3 | 58,800 B | A | view · diff |
| v1.19.3 | 2026-09-09 | f2d462d | 58,241 B | A | view · diff |
| v1.19.2 | 2026-09-09 | c1c7935 | 58,241 B | A | view · diff |
| v1.19.2 | 2026-09-09 | 3dcf14f | 58,015 B | A | view · diff |
| v1.19.2 | 2026-09-06 | c27eadb | 57,277 B | A | view · diff |
| v1.19.1 | 2026-09-06 | 451efd0 | 56,753 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6865 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
synthesisengineering/synthesis-skills · 23 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_64f3ljkorx2b5ybm GET https://markdownregistry.com/api/v1/resolve?ref=synthesisengineering/synthesis-skills/synthesis-context-lifecycle GET https://markdownregistry.com/api/v1/blob/92f39d41f62bb2b9b13797b80923ab2e888a3db72bdb6b42f1d480a18b69c327
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.