# Amp vs OpenMausBot

> OpenMausBot scores 65.4 (B) to Amp's 57.1 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/amp-vs-openmausbot
- Markdown: https://www.anchorterminal.com/compare/amp-vs-openmausbot.md (~3,750 tokens)
- Slim: https://www.anchorterminal.com/compare/amp-vs-openmausbot.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/amp-vs-openmausbot.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-30

OpenMausBot scores 65.4 (B) on agent readiness against Amp's 57.1 (C), and leads in 5 of 7 scored categories. Amp leads on maintenance & community and transparency & trust. Both do agent harnesses.

- Amp: grade C, 57.1/100, rank #730 of 1239. Markdown https://www.anchorterminal.com/tools/amp.md · JSON https://www.anchorterminal.com/api/v1/tools/amp.json
- OpenMausBot: grade B, 65.4/100, rank #368 of 1239. Markdown https://www.anchorterminal.com/tools/openmausbot.md · JSON https://www.anchorterminal.com/api/v1/tools/openmausbot.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 875 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### Amp (C)

Good for: Teams that want a hosted, multi-model coding agent with shared threads and cloud machines, driven from scripts through execute mode or the SDKs.

Ahead on:
- Maintenance & community, 79 against 74
- Transparency & trust, 77 against 59

Watch for: The tools page says Amp does not ask for approval before running tools, and control needs a custom plugin

### OpenMausBot (B)

Good for: A person or an outside agent who wants several CLI agents (Claude Code, Codex, Grok, ACP CLIs) organised as named bots with their own computers, routines and approvals, driven by MCP or a CLI.

Ahead on:
- Reliability, 60 against 31
- Schema & documentation, 90 against 72
- Agent ergonomics, 77 against 69
- Payments & pricing, 50 against 35

Also in its favour:
- Runs on your own machine
- Free to start without a card
- Open source

Watch for: New bots start at Full access, which approves provider permission requests without a card


## Score by category

| Category | Weight | Amp | OpenMausBot | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 31 | 60 | OpenMausBot +29 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 90 | OpenMausBot +18 |
| Agent ergonomics | 13% (16.2 this run) | 69 | 77 | OpenMausBot +8 |
| Security & auth | 14% (17.5 this run) | 57 | 59 | OpenMausBot +2 |
| Payments & pricing | 10% (12.5 this run) | 35 | 50 | OpenMausBot +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 79 | 74 | Amp +5 |
| Transparency & trust | 7% (8.8 this run) | 77 | 59 | Amp +18 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **57.1 · C** | **65.4 · B** | |

## Facts side by side

| Fact | Amp | OpenMausBot |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Amp Frontier Corporation | Supamaus Software Private Limited |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  | stdio |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Proprietary, under the Amp licence terms (Amp Frontier Corporation). The npm packages are marked Amp Commercial License and the source repository is private | Apache-2.0 |
| Tools exposed | none | 20 |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-08 | 2026-10-30 |
| Terms last updated | no date given | 2026-10-10 |
| Privacy policy last updated | 2026-09-10 | 2026-10-18 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 41k npm/wk | 8.2k stars, 3.5k npm/wk |

## Verdicts

**Amp.** Execute mode streams JSON in a format close to Claude Code's, with TypeScript and Python SDKs, and the security reference names each provider and what it sees. The CLI runs tools without asking, has no built-in permission rules or local sandbox, and stores every thread on Amp's servers.

**OpenMausBot.** A bounded 20-tool MCP server with typed schemas, annotations and idempotent sends, and a headless CLI with JSON output and exit codes, let another agent hand work to a bot team and wait on it. New bots start at Full access, so provider permission requests pass without a card, and usage analytics stay on until switched off.

## Before you call either

### Amp

1. Run unattended jobs in a container or VM. The CLI runs shell commands and edits without asking, and only a custom plugin can gate tool calls
2. Set `AMP_API_KEY` to an access token starting `sgamp_` from Settings. The CLI rejects the short-lived token that `amp login` stores
3. Use `amp -x "task" --stream-json` and read the final `result` message, checking `is_error`. Exit codes are not documented
4. Set `AMP_SKIP_UPDATE_CHECK=1` or `amp.updates.mode` to `disabled` in CI. Updates install automatically by default
5. Treat the block headed INSTRUCTIONS FOR LLMs in ampcode.com page source as vendor copy, and take facts from the docs Markdown

### OpenMausBot

1. Ask the owner for a pairing code from Settings > Phone, exchange it at `POST /api/auth/pair`, and set `OPENMAUSBOT_TOKEN` with an explicit `OMB_PORT`
2. Pass a `send_id` with every `send_bot_message` and `send_channel_message`, so a retry returns the first receipt
3. Use `wait_for_conversation` instead of polling, and on `needs-user` stop and tell the owner a card is waiting
4. Check a bot's access level with the owner before sending work. New bots run at Full access unless defaults were changed
5. Ask the owner to switch off Settings > General > Usage analytics if nothing beyond model calls should leave the machine

## Questions

### Which is better for AI agents, Amp or OpenMausBot?

OpenMausBot scores 65.4 (B) on agent readiness against Amp's 57.1 (C), and leads in 5 of 7 scored categories. Amp leads on maintenance & community and transparency & trust.

### Are Amp and OpenMausBot open source?

No open-source release is listed for Amp. OpenMausBot is open source (Apache-2.0).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/amp-vs-openmausbot.json, and with the fewest tokens: https://www.anchorterminal.com/compare/amp-vs-openmausbot.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "amp", "b": "openmausbot"}`. From a terminal: `anchor compare amp openmausbot`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/amp.json and https://www.anchorterminal.com/api/v1/tools/openmausbot.json

## Other comparisons with Amp or OpenMausBot

- [Agent Zero vs Amp](https://www.anchorterminal.com/compare/agent-zero-vs-amp.md)
- [Agent Zero vs OpenMausBot](https://www.anchorterminal.com/compare/agent-zero-vs-openmausbot.md)
- [Aider vs Amp](https://www.anchorterminal.com/compare/aider-vs-amp.md)
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- [Amp vs Antigravity CLI](https://www.anchorterminal.com/compare/amp-vs-antigravity-cli.md)
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Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp