Mermaid Chart on ChatGPT and Claude
Listings side by side
| Field | Mermaid ChartChatGPT · Apps SDK | Mermaid ChartClaude · Connector |
|---|---|---|
| Kind | Apps SDK | Connector |
| Best rank | #32 Developer Tools | #85 Most popular · among connectors |
| Charts | 1 | 3 |
| Countries | 39/39 | Worldwide |
| Tools or skills | — | 1 |
| MCP server | chatgpt.mermaid.ai | chatgpt.mermaid.ai |
| Developer | Mermaid Chart Inc | Mermaid Chart Inc |
| Website | mermaid.ai | mermaidchart.com |
| Starter prompts | 3 | — |
| Created or launched | Created Jan 13, 2026 | Launched Nov 12, 2025 |
| Listing changes | — | — |
Gaps
ChatGPT · Apps SDK
- 1 tool not herevalidate and render mermaid diagram
- No skill names
Claude · Connector
No gaps
Tool coverage
| Tool | ChatGPT · Apps SDK— | Claude · Connector1 tool |
|---|---|---|
| validate and render mermaid diagram | – | validate_and_render_mermaid_diagram |