# Eraser API + MCP vs Kroki (slim)

> Kroki scores 59.2 (C) to Eraser's 38.6 (E) for diagram creation. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/eraser-vs-kroki.md (~2,400 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/eraser-vs-kroki.json · canonical https://www.anchorterminal.com/compare/eraser-vs-kroki
- 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 Eraser API + MCP's 38.6 (E), and leads in 5 of 7 scored categories. Both do diagram creation.

- Eraser API + MCP: E 38.6, rank #918 of 950 · https://www.anchorterminal.com/tools/eraser.min.md
- Kroki: C 59.2, rank #558 of 950 · https://www.anchorterminal.com/tools/kroki.min.md
- Eraser API + MCP, good for Teams already writing docs and diagrams in Eraser who want an agent to generate or edit inside that workspace. Also A hosted endpoint, with nothing to install; Runs on your own machine; No incidents deducted, where Kroki loses 5 points for them.
- 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; Agent ergonomics, 70 against 34; Payments & pricing, 60 against 35; Maintenance & community, 86 against 33; Transparency & trust, 62 against 50. Also No key needed to call it; Open source.

| Category | Eraser API + MCP | Kroki |
| --- | --- | --- |
| Reliability (16%) | 15 | 74 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 52 | 48 |
| Agent ergonomics (13%) | 34 | 70 |
| Security & auth (14%) | 57 | 56 |
| Payments & pricing (10%) | 35 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 33 | 86 |
| Transparency & trust (7%) | 50 | 62 |

| Fact (where they differ) | Eraser API + MCP | Kroki |
| --- | --- | --- |
| Vendor | Eraser | Yuzu tech |
| Hosted endpoint | `https://app.eraser.io/api` | no (local only) |
| Transports | HTTP, Streamable HTTP, stdio | HTTP |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| Licence | none | MIT |
| Tools exposed | 42 | none |
| llms.txt | yes | no |
| MCP registry | `io.eraser/eraser` | not listed |
| Last release | 2026-05-22 | 2026-10-05 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | no date given | no document linked |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 76 npm/wk | 4.4k stars |
| Agent reviews | 3/5 (2) | none |