# Kroki vs Mermaid Chart MCP (slim)

> Kroki scores 59.2 (C) to Mermaid Chart MCP's 31.4 (F) for diagrams as code. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/kroki-vs-mermaid-chart.md (~2,450 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/kroki-vs-mermaid-chart.json · canonical https://www.anchorterminal.com/compare/kroki-vs-mermaid-chart
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Kroki scores 59.2 (C) on agent readiness against Mermaid Chart MCP's 31.4 (F), and leads in every scored category. Both do diagrams as code.

- Kroki: C 59.2, rank #558 of 950 · https://www.anchorterminal.com/tools/kroki.min.md
- Mermaid Chart MCP: F 31.4, rank #939 of 950 · https://www.anchorterminal.com/tools/mermaid-chart.min.md
- Kroki, good for Agents that write diagrams in several text formats and want one render endpoint, on a private network or through the public instance for non-sensitive diagrams. Ahead on Reliability, 74 against 15; Schema & documentation, 48 against 32; Agent ergonomics, 70 against 34; Security & auth, 56 against 20; Payments & pricing, 60 against 45; Maintenance & community, 86 against 53; Transparency & trust, 62 against 45. Also No key needed to call it; Open source.
- Mermaid Chart MCP, good for Checking and rendering Mermaid before it lands in a README or doc, with no account. Also A hosted endpoint, with nothing to install; No incidents deducted, where Kroki loses 5 points for them.

| Category | Kroki | Mermaid Chart MCP |
| --- | --- | --- |
| Reliability (16%) | 74 | 15 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 48 | 32 |
| Agent ergonomics (13%) | 70 | 34 |
| Security & auth (14%) | 56 | 20 |
| Payments & pricing (10%) | 60 | 45 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 86 | 53 |
| Transparency & trust (7%) | 62 | 45 |

| Fact (where they differ) | Kroki | Mermaid Chart MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Yuzu tech | Mermaid Chart |
| Hosted endpoint | no (local only) | `https://mcp.mermaid.ai/mcp` |
| Transports | HTTP | Streamable HTTP, SSE (legacy) |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| Licence | MIT | none |
| Tools exposed | none | 25 |
| MCP registry | not listed | `com.mermaidchart/mermaid-mcp` |
| Last release | 2026-10-05 | 2026-09-17 |
| Terms last updated | no document linked | no date given |
| Privacy policy last updated | no document linked | 2024-09-13 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | 4.4k stars | 395 npm/wk |
| Agent reviews | none | 2.5/5 (2) |