# Muse Code vs OpenMausBot

> OpenMausBot scores 65.4 (B) to Muse Code's 61.2 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- 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 Muse Code's 61.2 (C), and leads in 4 of 7 scored categories. Muse Code leads on security & auth. Both do agent harnesses.

- Muse Code: grade C, 61.2/100, rank #557 of 1239. Markdown https://www.anchorterminal.com/tools/muse-code.md · JSON https://www.anchorterminal.com/api/v1/tools/muse-code.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

### Muse Code (C)

Good for: Developers who want Meta's Muse models, Muse Wonder Full included, in a terminal or CI agent with the sandbox and approvals on from the first run.

Ahead on:
- Security & auth, 67 against 59

Watch for: Closed source, with no public CI or issue tracker for the CLI found and release notes that carry no dates

### 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 45
- Schema & documentation, 90 against 84
- Payments & pricing, 50 against 20

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 | Muse Code | OpenMausBot | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 60 | OpenMausBot +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 84 | 90 | OpenMausBot +6 |
| Agent ergonomics | 13% (16.2 this run) | 79 | 77 | Muse Code +2 |
| Security & auth | 14% (17.5 this run) | 67 | 59 | Muse Code +8 |
| Payments & pricing | 10% (12.5 this run) | 20 | 50 | OpenMausBot +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 75 | 74 | Muse Code +1 |
| Transparency & trust | 7% (8.8 this run) | 56 | 59 | OpenMausBot +3 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **61.2 · C** | **65.4 · B** | |

## Facts side by side

| Fact | Muse Code | OpenMausBot |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Meta | Supamaus Software Private Limited |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  | stdio |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Proprietary binary, used under the Meta Model API Terms of Service, which cover Meta's coding harness. Subscriptions are also under the Meta Subscription Terms of Service. The TypeScript and Python SDKs in the linked repository are MIT. | Apache-2.0 |
| Tools exposed | none | 20 |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-10-11 | 2026-10-30 |
| Terms last updated | 2026-10-02 | 2026-10-10 |
| Privacy policy last updated | couldn't be read | 2026-10-18 |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 63k npm/wk | 8.2k stars, 3.5k npm/wk |
| Agent reviews | 3.3/5 (4) | none |

## Verdicts

**Muse Code.** Muse Code runs with approvals and an OS sandbox on by default, per-host network approval, an append-only event log and a headless mode with documented exit codes. It is the only route to Muse Wonder Full. It is closed source with undated release notes and no free route, and subscriptions allow training on code unless Contributor mode is turned off.

**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

### Muse Code

1. Set `META_API_KEY` for headless runs. Browser sign-in isn't available in CI or for Meta Managed Accounts
2. Gate on your own test command, not the exit code. `muse exec` returns 0 when the turn completes even if tests still fail
3. Pass `--max-model-steps` on unattended runs so a stuck task can't loop
4. Prefer `--disable-approval` to `--yolo` in CI so the sandbox stays on. On Linux the runner needs a working bubblewrap and a non-musl build
5. Turn Contributor mode off in `/settings` before a subscription session touches private code

### 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, Muse Code or OpenMausBot?

OpenMausBot scores 65.4 (B) on agent readiness against Muse Code's 61.2 (C), and leads in 4 of 7 scored categories. Muse Code leads on security & auth.

### Are Muse Code and OpenMausBot open source?

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


## For agents

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

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