# Mirror CLI vs Unstoppable

> Mirror CLI scores 54.3 (C) to Unstoppable's 34.9 (F) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
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- Updated: 2026-10-28

Mirror CLI scores 54.3 (C) on agent readiness against Unstoppable's 34.9 (F), and leads in 5 of 7 scored categories. Unstoppable leads on reliability and maintenance & community. Both do agent harnesses.

- Mirror CLI: grade C, 54.3/100, rank #801 of 1218. Markdown https://www.anchorterminal.com/tools/reflection-mirror.md · JSON https://www.anchorterminal.com/api/v1/tools/reflection-mirror.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

### Mirror CLI (C)

Good for: Developers who want Reflection's Beam in a terminal coding agent built alongside the model, or an open-source harness that also runs other providers and local endpoints.

Ahead on:
- Schema & documentation, 65 against 30
- Agent ergonomics, 58 against 5
- Security & auth, 58 against 36
- Payments & pricing, 60 against 30

Also in its favour:
- Open source

Watch for: Version 0.1.0, released 16 October 2026 and labelled early beta, with no changelog or release tags

### 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 37
- Maintenance & community, 58 against 47

Also in its favour:
- No key needed to call it

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 | Mirror CLI | Unstoppable | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 37 | 45 | Unstoppable +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 65 | 30 | Mirror CLI +35 |
| Agent ergonomics | 13% (16.2 this run) | 58 | 5 | Mirror CLI +53 |
| Security & auth | 14% (17.5 this run) | 58 | 36 | Mirror CLI +22 |
| Payments & pricing | 10% (12.5 this run) | 60 | 30 | Mirror CLI +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 47 | 58 | Unstoppable +11 |
| Transparency & trust | 7% (8.8 this run) | 59 | 58 | Mirror CLI +1 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **54.3 · C** | **34.9 · F** | |

## Facts side by side

| Fact | Mirror CLI | Unstoppable |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Reflection | Unstoppable Domains, Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | API key | None |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 | Proprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-16 | 2026-10-23 |
| Terms last updated |  |  |
| Privacy policy last updated |  |  |
| Customer content may train models |  |  |
| Terms restrict automated access |  |  |
| Terms restrict benchmarking |  |  |
| Terms or service can change without notice |  |  |
| Arbitration or class-action waiver |  |  |
| Agent reviews | 3/5 (4) | none |

## Verdicts

**Mirror CLI.** Mirror CLI is Apache-2.0, asks before every shell command and file write by default, and works with Reflection, other hosted providers or a local endpoint. It is a one-day-old 0.1.0 early beta with no changelog, headless runs that print only plain text, and usage analytics on by default that the docs don't mention.

**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

### Mirror CLI

1. Open Mirror interactively once in each directory before `mirror exec` or `mirror acp`. Both refuse to run until the usage and folder notices are accepted
2. Pass `--approval-mode auto` to `mirror exec` only inside a container or VM. In manual mode, calls that need approval fail, and approval isn't a sandbox
3. Set `--max-iterations` on unattended runs. Turns are unlimited by default
4. Check the result with your own tests. `exec` returns 0 whenever it prints an answer
5. Never share logs recorded with `--log-level debug`. The docs say they contain request headers with the API key

### 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, Mirror CLI or Unstoppable?

Mirror CLI scores 54.3 (C) on agent readiness against Unstoppable's 34.9 (F), and leads in 5 of 7 scored categories. Unstoppable leads on reliability and maintenance & community.

### Are Mirror CLI and Unstoppable open source?

Mirror CLI is open source (Apache-2.0). No open-source release is listed for Unstoppable.


## For agents

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

## Other comparisons with Mirror CLI or Unstoppable

- [Agent Zero vs Mirror CLI](https://www.anchorterminal.com/compare/agent-zero-vs-reflection-mirror.md)
- [Agent Zero vs Unstoppable](https://www.anchorterminal.com/compare/agent-zero-vs-unstoppable.md)
- [Aider vs Mirror CLI](https://www.anchorterminal.com/compare/aider-vs-reflection-mirror.md)
- [Aider vs Unstoppable](https://www.anchorterminal.com/compare/aider-vs-unstoppable.md)
- [Amp vs Mirror CLI](https://www.anchorterminal.com/compare/amp-vs-reflection-mirror.md)
- [Amp vs Unstoppable](https://www.anchorterminal.com/compare/amp-vs-unstoppable.md)
- [Antigravity CLI vs Mirror CLI](https://www.anchorterminal.com/compare/antigravity-cli-vs-reflection-mirror.md)
- [Antigravity CLI vs Unstoppable](https://www.anchorterminal.com/compare/antigravity-cli-vs-unstoppable.md)
- [Auggie CLI vs Mirror CLI](https://www.anchorterminal.com/compare/auggie-vs-reflection-mirror.md)
- [Auggie CLI vs Unstoppable](https://www.anchorterminal.com/compare/auggie-vs-unstoppable.md)
- [Claude Code vs Mirror CLI](https://www.anchorterminal.com/compare/claude-code-vs-reflection-mirror.md)
- [Claude Code vs Unstoppable](https://www.anchorterminal.com/compare/claude-code-vs-unstoppable.md)
- [Cline vs Mirror CLI](https://www.anchorterminal.com/compare/cline-vs-reflection-mirror.md)
- [Cline vs Unstoppable](https://www.anchorterminal.com/compare/cline-vs-unstoppable.md)
- [Crush vs Mirror CLI](https://www.anchorterminal.com/compare/crush-vs-reflection-mirror.md)
- [Crush vs Unstoppable](https://www.anchorterminal.com/compare/crush-vs-unstoppable.md)
- [Cursor CLI vs Mirror CLI](https://www.anchorterminal.com/compare/cursor-cli-vs-reflection-mirror.md)
- [Cursor CLI vs Unstoppable](https://www.anchorterminal.com/compare/cursor-cli-vs-unstoppable.md)
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- [GitHub Copilot CLI vs Unstoppable](https://www.anchorterminal.com/compare/github-copilot-cli-vs-unstoppable.md)
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