# Jules vs Unstoppable

> Jules scores 44.7 (E) to Unstoppable's 34.9 (F) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/jules-vs-unstoppable
- Markdown: https://www.anchorterminal.com/compare/jules-vs-unstoppable.md (~3,700 tokens)
- Slim: https://www.anchorterminal.com/compare/jules-vs-unstoppable.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/jules-vs-unstoppable.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: 2026-10-28

Jules scores 44.7 (E) on agent readiness against Unstoppable's 34.9 (F), and leads in 3 of 7 scored categories. Unstoppable leads on reliability, maintenance & community and transparency & trust. Both do agent harnesses.

- Jules: grade E, 44.7/100, rank #1040 of 1218. Markdown https://www.anchorterminal.com/tools/jules.md · JSON https://www.anchorterminal.com/api/v1/tools/jules.json
- Unstoppable: grade F, 34.9/100, rank #1133 of 1218. Markdown https://www.anchorterminal.com/tools/unstoppable.md · JSON https://www.anchorterminal.com/api/v1/tools/unstoppable.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 833 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.

Ahead on:
- Schema & documentation, 76 against 30
- Agent ergonomics, 64 against 5
- Security & auth, 57 against 36

Also in its favour:
- Runs on your own machine

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

### Unstoppable (F)

Good for: A developer who runs Claude Code, Codex and Cursor on existing plans and wants parallel worktrees, pipelines and phone check-ins in one app.

Ahead on:
- Reliability, 45 against 13
- Maintenance & community, 58 against 18
- Transparency & trust, 58 against 46

Also in its favour:
- No key needed to call it
- Free to start without a card

Watch for: No API, MCP server, SDK or documented CLI for an outside agent. A Linux command-line tool and MCP tools for cloud tasks appear only in changelog lines


## Score by category

| Category | Weight | Jules | Unstoppable | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 13 | 45 | Unstoppable +32 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 30 | Jules +46 |
| Agent ergonomics | 13% (16.2 this run) | 64 | 5 | Jules +59 |
| Security & auth | 14% (17.5 this run) | 57 | 36 | Jules +21 |
| Payments & pricing | 10% (12.5 this run) | 30 | 30 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 18 | 58 | Unstoppable +40 |
| Transparency & trust | 7% (8.8 this run) | 46 | 58 | Unstoppable +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **44.7 · E** | **34.9 · F** | |

## Facts side by side

| Fact | Jules | Unstoppable |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Google LLC | Unstoppable Domains, Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP, stdio |  |
| Auth | OAuth or key | None |
| 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 | Proprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published |
| Tools exposed | 8 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-03-09 | 2026-10-23 |
| Terms last updated | 2026-07-30 |  |
| Privacy policy last updated | 2026-10-01 |  |
| Customer content may train models | yes |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 1.3k npm/wk | none |
| 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.

**Unstoppable.** Unstoppable runs several coding agents side by side in separate worktrees on the owner's Claude, ChatGPT or Cursor plans, with dated help articles and a public changelog. It has no API, MCP server or documented command an outside agent can call, every chat starts in Full access, and its pages disagree on which parts need a paid plan.

## 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

### Unstoppable

1. Don't plan to drive Unstoppable from another agent. It has no documented API, MCP server or CLI. Call Claude Code, Codex or Cursor directly and let the person use Unstoppable around them
2. Inside Unstoppable, check the approval mode before acting. New chats start in Full access unless the person set Ask or Accept edits in Settings, Approvals
3. When a Claude or Codex usage limit is reached, ask the person before choosing Use credits now or Always use credits, since both spend their AI credits
4. Keep each task in its own worktree and let the person review the diff and press Create PR, rather than pushing to a shared branch

## Questions

### Which is better for AI agents, Jules or Unstoppable?

Jules scores 44.7 (E) on agent readiness against Unstoppable's 34.9 (F), and leads in 3 of 7 scored categories. Unstoppable leads on reliability, maintenance & community and transparency & trust.


## For agents

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

## Other comparisons with Jules or Unstoppable

- [Agent Zero vs Jules](https://www.anchorterminal.com/compare/agent-zero-vs-jules.md)
- [Agent Zero vs Unstoppable](https://www.anchorterminal.com/compare/agent-zero-vs-unstoppable.md)
- [Aider vs Jules](https://www.anchorterminal.com/compare/aider-vs-jules.md)
- [Aider vs Unstoppable](https://www.anchorterminal.com/compare/aider-vs-unstoppable.md)
- [Amp vs Jules](https://www.anchorterminal.com/compare/amp-vs-jules.md)
- [Amp vs Unstoppable](https://www.anchorterminal.com/compare/amp-vs-unstoppable.md)
- [Antigravity CLI vs Jules](https://www.anchorterminal.com/compare/antigravity-cli-vs-jules.md)
- [Antigravity CLI vs Unstoppable](https://www.anchorterminal.com/compare/antigravity-cli-vs-unstoppable.md)
- [Auggie CLI vs Jules](https://www.anchorterminal.com/compare/auggie-vs-jules.md)
- [Auggie CLI vs Unstoppable](https://www.anchorterminal.com/compare/auggie-vs-unstoppable.md)
- [Claude Code vs Jules](https://www.anchorterminal.com/compare/claude-code-vs-jules.md)
- [Claude Code vs Unstoppable](https://www.anchorterminal.com/compare/claude-code-vs-unstoppable.md)
- [Cline vs Jules](https://www.anchorterminal.com/compare/cline-vs-jules.md)
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- [Crush vs Jules](https://www.anchorterminal.com/compare/crush-vs-jules.md)
- [Crush vs Unstoppable](https://www.anchorterminal.com/compare/crush-vs-unstoppable.md)
- [Cursor CLI vs Jules](https://www.anchorterminal.com/compare/cursor-cli-vs-jules.md)
- [Cursor CLI vs Unstoppable](https://www.anchorterminal.com/compare/cursor-cli-vs-unstoppable.md)
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- [Unstoppable vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/unstoppable-vs-warp.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