diagram-as-code skillA
diagram-as-code is agent-read markdown (skill) from jnpiyush/agentx: Author, review, and maintain diagrams as code across Mermaid, PlantUML, Structurizr DSL, Graphviz DOT, and draw.io XML. Covers swimlane/cross-functional workflows, C4 architecture, sequence, state, ER, dependency, and network diagrams. Use when any agent needs to create or update a diagram in a PRD, ADR, spec, UX flow, or architecture doc..
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
# Diagrams as Code > **Purpose**: One conventions layer for all diagrams produced across Frontier roles. > **Principle**: Text-first, diffable, reviewable, rendered at read-time. Binary formats (PNG, JPG, VSDX) are an export, never the source of truth. > **Scope**: This skill is the convention layer. The `diagram-specialist` sub-agent (`.github/agents/internal/diagram-specialist.agent.md`) owns spawn-and-execute behavior. Each reference file covers one format or quality concern. --- ## When to Use Load this skill any time an agent needs to: - Create a swimlane / cross-functional workflow (e.g. the contract-lifecycle template) - Draw a C4 context / container / component diagram for an ADR or spec - Capture an API or event sequence - Document a state machine or lifecycle - Render an ER diagram or data model - Produce a network / infra / pipeline topology - Convert a legacy Visio file into a diffable code artifact - Review an existing diagram for clarity and correctness --- ## Default Format Policy (Mermaid-First) …
Read the whole file at its exact version.
How to install
mdr add jnpiyush/agentx/diagram-as-code@v1.0.0mdr add jnpiyush/agentx/diagram-as-code@sha256:fce635a7e60e6977Pin 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_5lisnbt4x3aopow3)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-15 | f17c505 | 6,613 B | A | view · diff |
| v1.0.0 | 2026-04-22 | 7f3a017 | 6,603 B | A | view · diff |
| v1.0.0 | 2026-04-22 | 2f27c4e | 5,464 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 (6613 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
jnpiyush/agentx · 16 stars · license Apache-2.0 · pushed 2026-09-21 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_5lisnbt4x3aopow3 GET https://markdownregistry.com/api/v1/resolve?ref=jnpiyush/agentx/diagram-as-code GET https://markdownregistry.com/api/v1/blob/fce635a7e60e6977befb812df04a80b55d8681f89d773e7cc1df42304a6cae13
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