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external-diagram-mermaid-generate

external-diagram-mermaid-generate is a skill for Claude Code, Codex from forcedotcom/sf-skills. It costs 95 tokens per session (2,517 once invoked), scanned A, original, Apache-2.0.

A diagram-writing tool for Salesforce systems, using Mermaid diagrams with an ASCII text fallback. It covers architecture, authentication, data relationships, integration sequences, and Agentforce structures.

In plain words
What is it for?
Use it to create architecture diagrams, OAuth flow diagrams, entity-relationship diagrams (ERDs), flowcharts, and integration sequence diagrams.
Why use it?
It helps explain Salesforce designs in documentation, README files, and issue trackers without requiring a separate drawing application.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 987repo +21 yesterday A scan Socket: passSnyk: passSkillSpector: pass 95 tokens original Apache-2.0

Good fit Use it to create architecture diagrams, OAuth flow diagrams, entity-relationship diagrams (ERDs), flowcharts, and integration sequence diagrams.

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Install with agentmods
npx agentmods add skills/forcedotcom/sf-skills/external-diagram-mermaid-generate
View source ↗ forcedotcom/sf-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add forcedotcom/sf-skills --skill external-diagram-mermaid-generate
Clone the repo
git clone --depth 1 https://github.com/forcedotcom/sf-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for external-diagram-mermaid-generate

README.md
[![agentmods](https://agentmods.dev/badge/skills/forcedotcom/sf-skills/external-diagram-mermaid-generate/github.svg)](https://agentmods.dev/skills/forcedotcom/sf-skills/external-diagram-mermaid-generate)
Your own site
<a href="https://agentmods.dev/skills/forcedotcom/sf-skills/external-diagram-mermaid-generate"><img src="https://agentmods.dev/badge/skills/forcedotcom/sf-skills/external-diagram-mermaid-generate/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for external-diagram-mermaid-generate

Your own site · 80×15
<a href="https://agentmods.dev/skills/forcedotcom/sf-skills/external-diagram-mermaid-generate"><img src="https://agentmods.dev/badge/skills/forcedotcom/sf-skills/external-diagram-mermaid-generate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,517 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 18 Aug 2026
  • Snyk pass 18 Aug 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.02517
Opus 5 $0.00048 $0.01259
Sonnet 5 $0.00019 $0.00503
Haiku 4.5 $0.00010 $0.00252

Measured 8d ago against content hash c4de0567b3bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

external-diagram-mermaid-generate scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/mermaid_preview.py, scripts/query-org-metadata.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- tool: ["curl"]
skills/external-diagram-mermaid-generate/SKILL.md · 237 lines

How it starts

The opening of the file, as written. The whole thing — 237 lines — stays where its author put it; the contents beside it link to each section on GitHub.

external-diagram-mermaid-generate: Salesforce Diagram Generation

Use this skill when the user needs text-based diagrams: Mermaid diagrams for architecture, OAuth, integration flows, ERDs, or Agentforce structure, plus ASCII fallback when plain-text compatibility matters.

Scope

In Scope

Use external-diagram-mermaid-generate when the user wants:

  • Mermaid output
  • ASCII fallback diagrams
  • architecture, sequence, flowchart, or ERD views in markdown-friendly form
  • diagrams that can live directly in docs, READMEs, or issues

Out of Scope — Delegate elsewhere when the user wants:

Supported Diagram Families

Type Preferred Mermaid form Typical use
OAuth / auth flows sequenceDiagram Authorization Code, JWT, PKCE, Device Flow
ERD / data model flowchart LR object relationships and sharing context
integration sequence sequenceDiagram request/response or event choreography
system landscape flowchart high-level architecture
role / access hierarchy flowchart users, profiles, permissions
Agentforce behavior map flowchart agent → topic → action relationships

Required Context to Gather First

Ask for or infer:

  • diagram type
  • scope and entities / systems involved
  • output preference: Mermaid only, ASCII only, or both
  • whether styling should be minimal, documentation-first, or presentation-friendly
  • for ERDs: whether org metadata is available for grounding

1. Pick the right diagram structure

  • use sequenceDiagram for time-ordered interactions
  • use flowchart LR for ERDs and capability maps
  • keep a single primary story per diagram when possible

2. Gather data

For ERDs and grounded diagrams:

Read the full file on GitHub · 237 lines

Files

What ships with it

36 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 237 lines · 95 tokens per session scan A c4de0567b3bc

Subscribe to this mod's changes

external-diagram-mermaid-generate is a skill published in the GitHub repository forcedotcom/sf-skills (987 stars, last pushed yesterday), licensed Apache-2.0. It adds 95 tokens to every session and 2,517 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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