maintaining-deferred-memory SKILL.md skillA
maintaining-deferred-memory from letta-ai/letta-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add letta-ai/letta-code/maintaining-deferred-memory@git:20261030.9d1220bPins git:20261030.9d1220b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- letta-ai/letta-code
- Path
src/skills/builtin/maintaining-deferred-memory/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261030.9d1220b, committed Oct 30, 2026
- First version recorded
- Oct 19, 2026
- Size
- 9,791 bytes
- Repository stars
- 3,790
- License
- Apache-2.0
Maintains deferred memory, which stores accumulated knowledge, analysis, and observations made by the agent over time. Use when saving knowledge (e.g. about a person, project, repository, system, or event). Do NOT use for managing skills, prompts, or for saving information that is already automatically stored in the message history.
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
Deferred memory contains the agent's knowledge. Use deferred memory for understanding of a subject that matters only when that subject comes up. If the agent needs it on most turns, it is core memory: use the `maintaining-core-memory` skill. If it is a procedure with a trigger, use the `creating-skills` skill. Deferred memory should NOT be used to store: - Information that can be accessed by querying the message history (recall memory). For example, logs of specific interactions can simply be looked up in past messages. Reserve deferred memory to store knowledge that is actually *derived* from experience, or to organize knowledge in a way that optimizes recalling the right information at the right time through progressive disclosure. - Justifications, reasons, or sources for updating memory. These belong in the commit message; see [Commit memory changes](#commit-memory-changes). ## Check the limits first Read `$MEMORY_DIR/.memfs.config.json` if it exists. The memory repository's pre-commit hook enforces it: …
Read the whole file at its exact version.
How to install
mdr add letta-ai/letta-code/maintaining-deferred-memory@sha256:5d6f9544f4516bcfThe line at the top of this page pins the label git:20261030.9d1220b, 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_naaepmjnnnex47e4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Oct 19, 2026 and Oct 30, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.9d1220b latest | 2026-10-30 | 9d1220b | 9,791 B | A | view · diff |
| git:20261026.bbfc6e9 | 2026-10-26 | bbfc6e9 | 7,580 B | A | view · diff |
| git:20261019.0ace9fa | 2026-10-19 | 0ace9fa | 7,046 B | A | view · diff |
| git:20261019.2d3dd8f | 2026-10-19 | 2d3dd8f | 7,099 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 (9791 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
letta-ai/letta-code · 3,790 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_naaepmjnnnex47e4 GET https://markdownregistry.com/api/v1/resolve?ref=letta-ai/letta-code/maintaining-deferred-memory GET https://markdownregistry.com/api/v1/blob/5d6f9544f4516bcf23764b9499ba6b2fab93086d89d4b2995d54c3e210c4ca9f
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.