ai-codegraph skillA
ai-codegraph is agent-read markdown (skill) from arcasilesgroup/ai-engineering: Semantic code intelligence via MCP: call chains, blast radius, cross-file symbol relationships. Uses CodeGraph (colbymchenry/codegraph) — a local-first Rust server that builds a SQLite knowledge graph from tree-sitter ASTs. One tool: codegraph_explore. Use when the question involves "how does X work", "what calls Y", "if I change X what breaks", or cross-file dependency analysis. Not for literal text search — use find/grep for that. Not for file discovery — use glob. Trigger for "codegraph", "co.
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
# ai-codegraph — semantic code intelligence via MCP ## What it produces Nothing written. This skill reads the code graph and returns structured answers: verbatim source grouped by file, call paths (including dynamic dispatch), and blast radius summaries. The agent uses these to answer graph questions without grepping every file. ## When to use CodeGraph vs find/grep | Question | Tool | Why | |----------|------|-----| | "How does X work?" | `codegraph_explore` | Follows call chains across files | | "What calls function Y?" | `codegraph_explore` | Graph traversal, follows polymorphism | | "If I change this interface, what breaks?" | `codegraph_explore` | Blast radius via edge traversal | | "What does this module depend on?" | `codegraph_explore` | Import edges in the graph | | "Find all TODOs" | `grep` | Literal text search, faster | | "Where is X defined?" | `find` | Simple path lookup | | "Find all files importing X" | `grep` | Literal text match | | "Show me the test for this function" | `find` + `grep` | Convention-based lookup | **Rule of thumb:** graph questions → CodeGraph. Text questions → find/grep. ## Steps 1. **Check availability** — is CodeGraph installed? …
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How to install
mdr add arcasilesgroup/ai-engineering/ai-codegraph@git:20260923.5ad45c5mdr add arcasilesgroup/ai-engineering/ai-codegraph@sha256:2f30556b0b2ecd46Pin 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_oj6mw6iammxn65ra)
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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 (4393 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
arcasilesgroup/ai-engineering · 58 stars · license Apache-2.0 · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_oj6mw6iammxn65ra GET https://markdownregistry.com/api/v1/resolve?ref=arcasilesgroup/ai-engineering/ai-codegraph GET https://markdownregistry.com/api/v1/blob/2f30556b0b2ecd46998b6608bb796361469d038ea00cd30c5298b4dce4094f85
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