OpenCode is an open-source AI coding agent that helps developers work on software projects. It includes agents for full-access development, read-only exploration and planning, plus a general subagent for complex searches and multistep tasks; the catalogue add-ons extend its workflows.
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.
npx skills add anomalyco/opencode --skill figma-generate-diagramgit clone --depth 1 https://github.com/anomalyco/opencodeWrote 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.
[](https://agentmods.dev/skills/anomalyco/opencode/figma-generate-diagram)<a href="https://agentmods.dev/skills/anomalyco/opencode/figma-generate-diagram"><img src="https://agentmods.dev/badge/skills/anomalyco/opencode/figma-generate-diagram/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.
<a href="https://agentmods.dev/skills/anomalyco/opencode/figma-generate-diagram"><img src="https://agentmods.dev/badge/skills/anomalyco/opencode/figma-generate-diagram.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00164 | $0.02340 |
| Opus 5.5 | $0.00066 | $0.00936 |
| Sonnet 5.5 | $0.00033 | $0.00468 |
| Haiku 4.5 | $0.00016 | $0.00234 |
Grade A, and why
figma-generate-diagram scanned grade A with 0 findings 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 2d ago.
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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
3 near-identical copies found in the catalogue:
- figma-generate-diagram — 100% identical, 0 lines differ
- figma-generate-diagram — 100% identical, 0 lines differ
- figma-generate-diagram — 86% identical, 54 lines differ
How it starts
The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.
generate-diagram
You MUST load this skill before every generate_diagram tool call. Skipping it causes preventable rendering failures and low-quality output.
generate_diagram takes Mermaid.js syntax and produces an editable FigJam diagram. This skill routes you to the right per-type guidance and sets universal constraints.
Step 1: Is generate_diagram the right tool?
Supported diagram types
flowchart, sequenceDiagram, stateDiagram / stateDiagram-v2, gantt, erDiagram.
Unsupported — don't call the tool
If the user wants any of these, tell them directly that generate_diagram doesn't support it instead of calling the tool and failing:
- Pie chart, mindmap, venn diagram, class diagram, journey, timeline, quadrant, C4, git graph, requirement diagram
When to push the user to edit in Figma
The tool cannot:
- Change fonts on an existing diagram
- Move individual shapes
- Edit a diagram node-by-node after generation
If the user asks for any of those on an existing diagram, recommend they open the diagram in Figma and edit there. For content-level changes, it's usually faster to regenerate.
Step 2: Pick the diagram type
Lightweight routing — use the first match.
| User wants… | Type | Next step |
|---|---|---|
| Services + datastores + queues + integrations | Architecture flowchart | Read references/architecture.md |
| Decision tree, process flow, pipeline, dependency graph, user journey | Flowchart | Read references/flowchart.md |
| Interactions between parties over time (API calls, auth, messaging) | Sequence diagram | Read references/sequence.md |
| Data model, tables, keys, cardinality | ER diagram | Read references/erd.md |
| Named states with transitions between them | State diagram | Read references/state.md |
| Project schedule with dates, milestones | Gantt chart | Read references/gantt.md |
What ships with it
7 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.
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.
- 2d ago First seen · 113 lines · 164 tokens per session scan A 7297638dbf21
figma-generate-diagram is a skill published in the GitHub repository anomalyco/opencode (213,922 stars, last pushed today), licensed MIT. It adds 164 tokens to every session and 2,340 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-14.
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