skill-development skillA
skill-development is agent-read markdown (skill) from letta-ai/skills: Create and contribute skills to the communal knowledge base. Use when creating new skills, updating existing skills, or contributing learnings back to the repository..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add letta-ai/skills/skill-development@git:20260204.eba0c2amdr add letta-ai/skills/skill-development@sha256:8380a145999d7c75Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_hr2yrxbrdy3krfos)
0 badge views in 30 days
Versions
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 (3817 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/skills · 143 stars · license NOASSERTION · pushed 2026-09-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hr2yrxbrdy3krfos GET https://markdownregistry.com/api/v1/resolve?ref=letta-ai/skills/skill-development GET https://markdownregistry.com/api/v1/blob/8380a145999d7c75d581654db40c1c1d577140e5cd0edd9a9ea35ab63186fb08
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.