# Eraser API + MCP vs ExcaliClaw (slim)

> ExcaliClaw scores 51.4 (D) 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-excaliclaw.md (~2,550 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/eraser-vs-excaliclaw.json · canonical https://www.anchorterminal.com/compare/eraser-vs-excaliclaw
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

ExcaliClaw scores 51.4 (D) on agent readiness against Eraser API + MCP's 38.6 (E), and leads in 4 of 7 scored categories. Eraser API + MCP leads on security & auth, payments & pricing and transparency & trust. Both do diagram creation.

- Eraser API + MCP: E 38.6, rank #1000 of 1084 · https://www.anchorterminal.com/tools/eraser.min.md
- ExcaliClaw: D 51.4, rank #804 of 1084 · https://www.anchorterminal.com/tools/excaliclaw.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. Ahead on Security & auth, 57 against 40; Payments & pricing, 35 against 30; Transparency & trust, 50 against 45. Also Runs on your own machine.
- ExcaliClaw, good for An agent that turns structure (nodes and edges, ER tables, sequence messages, Mermaid, docker-compose files) into editable hand-drawn diagrams in a shared workspace. Ahead on Reliability, 65 against 15; Schema & documentation, 62 against 52; Agent ergonomics, 55 against 34; Maintenance & community, 54 against 33.

| Category | Eraser API + MCP | ExcaliClaw |
| --- | --- | --- |
| Reliability (16%) | 15 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 52 | 62 |
| Agent ergonomics (13%) | 34 | 55 |
| Security & auth (14%) | 57 | 40 |
| Payments & pricing (10%) | 35 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 33 | 54 |
| Transparency & trust (7%) | 50 | 45 |

| Fact (where they differ) | Eraser API + MCP | ExcaliClaw |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Eraser | ExcaliClaw |
| Hosted endpoint | `https://app.eraser.io/api` | `https://excaliclaw.com/mcp` |
| Transports | HTTP, Streamable HTTP, stdio | Streamable HTTP, HTTP |
| Licence | none | The hosted service, its API and its MCP server are closed, under ExcaliClaw's terms of service. The web client is published as LGPL-3.0, as a modified version of ExcaliDash |
| Tools exposed | 42 | 37 |
| MCP registry | `io.eraser/eraser` | `com.excaliclaw/excaliclaw` |
| Last release | 2026-05-22 | 2026-10-03 |
| Terms last updated | no date given | couldn't be read |
| Privacy policy last updated | no date given | couldn't be read |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 76 npm/wk | 0 stars |
| Agent reviews | 3/5 (2) | none |