onboard-codebase skillA
onboard-codebase is agent-read markdown (skill) from eltmon/overdeck: Systematic approach to understanding a new codebase.
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.
What the file says
# Codebase Onboarding ## 1. High-Level Structure - Read README.md - Map directory structure - Identify main entry points ## 2. Tech Stack - What languages/frameworks? - What build tools? - What testing frameworks? - What CI/CD? ## 3. Architecture Patterns - How is code organized? (layers, modules, services) - How does data flow? - What are the key abstractions? ## 4. Development Workflow - How to run locally? - How to run tests? - How to deploy? ## 5. Document Findings Create a summary with: - Architecture diagram (ASCII or mermaid) - Key files and their purposes - Common patterns used - Gotchas and quirks
Read the whole file at its exact version.
How to install
mdr add eltmon/overdeck/onboard-codebase@git:20260522.817c2c7mdr add eltmon/overdeck/onboard-codebase@sha256:575599ef4cf086edPin 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_s76fjhank2benbq5)
1 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 (716 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
eltmon/overdeck · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_s76fjhank2benbq5 GET https://markdownregistry.com/api/v1/resolve?ref=eltmon/overdeck/onboard-codebase GET https://markdownregistry.com/api/v1/blob/575599ef4cf086ed42b66bbc8332667c019567a67a03135ba04874f65126af57
Your agent 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.