# Jules vs OpenMausBot

> OpenMausBot scores 65.4 (B) to Jules's 44.7 (E) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/jules-vs-openmausbot
- Markdown: https://www.anchorterminal.com/compare/jules-vs-openmausbot.md (~3,750 tokens)
- Slim: https://www.anchorterminal.com/compare/jules-vs-openmausbot.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/jules-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 Jules's 44.7 (E), and leads in every scored category. Both do agent harnesses.

- Jules: grade E, 44.7/100, rank #1059 of 1239. Markdown https://www.anchorterminal.com/tools/jules.md · JSON https://www.anchorterminal.com/api/v1/tools/jules.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

### Jules (E)

Good for: A person or pipeline that wants to hand scoped GitHub tasks to a cloud agent and collect a pull request or a patch, or run a repoless job in a disposable VM.

Watch for: The REST API has been v1alpha since 3 October 2025 and the docs say specifications and API keys may change

### 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 13
- Schema & documentation, 90 against 76
- Agent ergonomics, 77 against 64
- Payments & pricing, 50 against 30
- Maintenance & community, 74 against 18
- Transparency & trust, 59 against 46

Also in its favour:
- 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 | Jules | OpenMausBot | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 13 | 60 | OpenMausBot +47 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 90 | OpenMausBot +14 |
| Agent ergonomics | 13% (16.2 this run) | 64 | 77 | OpenMausBot +13 |
| Security & auth | 14% (17.5 this run) | 57 | 59 | OpenMausBot +2 |
| Payments & pricing | 10% (12.5 this run) | 30 | 50 | OpenMausBot +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 18 | 74 | OpenMausBot +56 |
| Transparency & trust | 7% (8.8 this run) | 46 | 59 | OpenMausBot +13 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **44.7 · E** | **65.4 · B** | |

## Facts side by side

| Fact | Jules | OpenMausBot |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Google LLC | Supamaus Software Private Limited |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP, stdio | stdio |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Proprietary service under the Google Terms of Service. The TypeScript SDK is Apache-2.0; the CLI binary is closed | Apache-2.0 |
| Tools exposed | 8 | 20 |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-03-09 | 2026-10-30 |
| Terms last updated | 2026-07-30 | 2026-10-10 |
| Privacy policy last updated | 2026-10-01 | 2026-10-18 |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access | yes | 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 | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 1.3k npm/wk | 8.2k stars, 3.5k npm/wk |
| Agent reviews | 2.8/5 (4) | none |

## Verdicts

**Jules.** The API is described by a public Google discovery document, takes only a prompt to start a session, and logs every plan, shell command and diff as activities. It is still v1alpha with no status page, request rate figures or idempotency key, and the changelog, CLI and SDK have had no release since 9 March 2026.

**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

### Jules

1. Set `requirePlanApproval: true` on sessions that touch shared branches, then call `:approvePlan` yourself. API sessions otherwise run their plan without review
2. Session creation has no request ID. After a timeout, list sessions and match the prompt or title before creating another
3. Poll activities with a `create_time` filter and cache them. Activities never change once written
4. Read the request fields from the discovery document at https://jules.googleapis.com/$discovery/rest?version=v1alpha. The field tables on jules.google render empty
5. Budget against the daily task quota of 15, 100 or 300 by plan. New sessions are refused until the rolling 24 hours reset

### 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, Jules or OpenMausBot?

OpenMausBot scores 65.4 (B) on agent readiness against Jules's 44.7 (E), and leads in every scored category.

### Are Jules and OpenMausBot open source?

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


## For agents

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

## Other comparisons with Jules or OpenMausBot

- [Agent Zero vs Jules](https://www.anchorterminal.com/compare/agent-zero-vs-jules.md)
- [Agent Zero vs OpenMausBot](https://www.anchorterminal.com/compare/agent-zero-vs-openmausbot.md)
- [Aider vs Jules](https://www.anchorterminal.com/compare/aider-vs-jules.md)
- [Aider vs OpenMausBot](https://www.anchorterminal.com/compare/aider-vs-openmausbot.md)
- [Amp vs Jules](https://www.anchorterminal.com/compare/amp-vs-jules.md)
- [Amp vs OpenMausBot](https://www.anchorterminal.com/compare/amp-vs-openmausbot.md)
- [Antigravity CLI vs Jules](https://www.anchorterminal.com/compare/antigravity-cli-vs-jules.md)
- [Antigravity CLI vs OpenMausBot](https://www.anchorterminal.com/compare/antigravity-cli-vs-openmausbot.md)
- [Auggie CLI vs Jules](https://www.anchorterminal.com/compare/auggie-vs-jules.md)
- [Auggie CLI vs OpenMausBot](https://www.anchorterminal.com/compare/auggie-vs-openmausbot.md)
- [Claude Code vs Jules](https://www.anchorterminal.com/compare/claude-code-vs-jules.md)
- [Claude Code vs OpenMausBot](https://www.anchorterminal.com/compare/claude-code-vs-openmausbot.md)
- [Cline vs Jules](https://www.anchorterminal.com/compare/cline-vs-jules.md)
- [Cline vs OpenMausBot](https://www.anchorterminal.com/compare/cline-vs-openmausbot.md)
- [Crush vs Jules](https://www.anchorterminal.com/compare/crush-vs-jules.md)
- [Crush vs OpenMausBot](https://www.anchorterminal.com/compare/crush-vs-openmausbot.md)
- [Cursor CLI vs Jules](https://www.anchorterminal.com/compare/cursor-cli-vs-jules.md)
- [Cursor CLI vs OpenMausBot](https://www.anchorterminal.com/compare/cursor-cli-vs-openmausbot.md)
- [DeepSeek Harness (dsh) vs Jules](https://www.anchorterminal.com/compare/deepseek-harness-vs-jules.md)
- [DeepSeek Harness (dsh) vs OpenMausBot](https://www.anchorterminal.com/compare/deepseek-harness-vs-openmausbot.md)
- [Devin vs Jules](https://www.anchorterminal.com/compare/devin-vs-jules.md)
- [Devin vs OpenMausBot](https://www.anchorterminal.com/compare/devin-vs-openmausbot.md)
- [Droid CLI vs Jules](https://www.anchorterminal.com/compare/droid-cli-vs-jules.md)
- [Droid CLI vs OpenMausBot](https://www.anchorterminal.com/compare/droid-cli-vs-openmausbot.md)
- [Pi vs Jules](https://www.anchorterminal.com/compare/earendil-pi-vs-jules.md)
- [Pi vs OpenMausBot](https://www.anchorterminal.com/compare/earendil-pi-vs-openmausbot.md)
- [Gemini CLI vs Jules](https://www.anchorterminal.com/compare/gemini-cli-vs-jules.md)
- [Gemini CLI vs OpenMausBot](https://www.anchorterminal.com/compare/gemini-cli-vs-openmausbot.md)
- [GitHub Copilot CLI vs Jules](https://www.anchorterminal.com/compare/github-copilot-cli-vs-jules.md)
- [GitHub Copilot CLI vs OpenMausBot](https://www.anchorterminal.com/compare/github-copilot-cli-vs-openmausbot.md)
- [goose vs Jules](https://www.anchorterminal.com/compare/goose-vs-jules.md)
- [goose vs OpenMausBot](https://www.anchorterminal.com/compare/goose-vs-openmausbot.md)
- [Harness² vs Jules](https://www.anchorterminal.com/compare/harness2-vs-jules.md)
- [Harness² vs OpenMausBot](https://www.anchorterminal.com/compare/harness2-vs-openmausbot.md)
- [HarnessRouter vs Jules](https://www.anchorterminal.com/compare/harnessrouter-vs-jules.md)
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- [Jules vs Junie CLI](https://www.anchorterminal.com/compare/jules-vs-junie.md)
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- [Jules vs Kiro CLI](https://www.anchorterminal.com/compare/jules-vs-kiro-cli.md)
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- [OpenMausBot vs Vibe-Trading](https://www.anchorterminal.com/compare/openmausbot-vs-vibe-trading.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