Head to head · Agent harnesses · October 2026 research run
Jules vs OpenMausBot
OpenMausBot scores 65.4 (B) on agent readiness against Jules's 44.7 (E), and leads in every scored category. Both do agent harnesses.
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Which one, for what
Jules E
Best 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.
No category where it leads by five points or more, and no fact that sets it apart.
Watch for
The REST API has been v1alpha since 3 October 2025 and the docs say specifications and API keys may change
Best 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 this run | Jules | OpenMausBot | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 13 | 60 | OpenMausBot +47 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 76 | 90 | OpenMausBot +14 |
| Agent ergonomics | 13%16.2 | 64 | 77 | OpenMausBot +13 |
| Security & auth | 14%17.5 | 57 | 59 | OpenMausBot +2 |
| Payments & pricing | 10%12.5 | 30 | 50 | OpenMausBot +20 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 18 | 74 | OpenMausBot +56 |
| Transparency & trust | 7%8.8 | 46 | 59 | OpenMausBot +13 |
| Negative events | ≤15 | 0 | -2 | |
| Total | E 44.7/100 | B 65.4/100 |
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
- Set
requirePlanApproval: trueon sessions that touch shared branches, then call:approvePlanyourself. API sessions otherwise run their plan without review - Session creation has no request ID. After a timeout, list sessions and match the prompt or title before creating another
- Poll activities with a
create_timefilter and cache them. Activities never change once written - 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
- Budget against the daily task quota of 15, 100 or 300 by plan. New sessions are refused until the rolling 24 hours reset
OpenMausBot
- Ask the owner for a pairing code from Settings > Phone, exchange it at
POST /api/auth/pair, and setOPENMAUSBOT_TOKENwith an explicitOMB_PORT - Pass a
send_idwith everysend_bot_messageandsend_channel_message, so a retry returns the first receipt - Use
wait_for_conversationinstead of polling, and onneeds-userstop and tell the owner a card is waiting - Check a bot's access level with the owner before sending work. New bots run at Full access unless defaults were changed
- 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).
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- Droid CLI vs Jules
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- Pi vs Jules
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- Gemini CLI vs Jules
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- GitHub Copilot CLI vs Jules
- GitHub Copilot CLI vs OpenMausBot
- goose vs Jules
- goose vs OpenMausBot
- Harness² vs Jules
- Harness² vs OpenMausBot
- HarnessRouter vs Jules
- HarnessRouter vs OpenMausBot
- Jules vs Junie CLI
- Jules vs Kilo Code CLI
- Jules vs Kimi Code CLI
- Jules vs Kiro CLI
- Jules vs mini-swe-agent
- Jules vs MiniMax Code
- Jules vs Mistral Vibe CLI
- Jules vs Muse Code
- Jules vs OpenAI Codex
- Jules vs OpenCode
- Jules vs OpenHands
- Jules vs Prime Agent
- Jules vs Qoder CLI
- Jules vs Qwen Code
- Jules vs Mirror CLI
- Jules vs Rovo Dev CLI
- Jules vs Unstoppable
- Jules vs Vibe-Trading
- Jules vs Warp (Warp Agent CLI and the Oz Agent API)
- Junie CLI vs OpenMausBot
- Kilo Code CLI vs OpenMausBot
- Kimi Code CLI vs OpenMausBot
- Kiro CLI vs OpenMausBot
- mini-swe-agent vs OpenMausBot
- MiniMax Code vs OpenMausBot
- Mistral Vibe CLI vs OpenMausBot
- Muse Code vs OpenMausBot
- OpenAI Codex vs OpenMausBot
- OpenCode vs OpenMausBot
- OpenHands vs OpenMausBot
- CLI Manager vs Jules
- CLI Manager vs OpenMausBot
- Harness vs Jules
- Harness vs OpenMausBot
- Jules vs Paperclip
- Jules vs Parallax
- OpenMausBot vs Paperclip
- OpenMausBot vs Parallax
- OpenMausBot vs Prime Agent
- OpenMausBot vs Qoder CLI
- OpenMausBot vs Qwen Code
- OpenMausBot vs Mirror CLI
- OpenMausBot vs Rovo Dev CLI
- OpenMausBot vs Unstoppable
- OpenMausBot vs Vibe-Trading
- OpenMausBot vs Warp (Warp Agent CLI and the Oz Agent API)
Machine-readable
- This page as Markdown
/compare/jules-vs-openmausbot.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/jules.json·/api/v1/tools/openmausbot.json - From a terminal
anchor compare jules openmausbot(the CLI) - Over MCP
compare_tools {"a": "jules", "b": "openmausbot"}at/mcp, no key