# OpenCode vs Unstoppable

> OpenCode scores 68.8 (B) 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/opencode-vs-unstoppable
- Markdown: https://www.anchorterminal.com/compare/opencode-vs-unstoppable.md (~3,650 tokens)
- Slim: https://www.anchorterminal.com/compare/opencode-vs-unstoppable.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/opencode-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

OpenCode scores 68.8 (B) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category. Both do agent harnesses.

- OpenCode: grade B, 68.8/100, rank #230 of 1218. Markdown https://www.anchorterminal.com/tools/opencode.md · JSON https://www.anchorterminal.com/api/v1/tools/opencode.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

### OpenCode (B)

Good for: Agents and pipelines that need a scriptable coding agent with a JSON event stream, an HTTP server and any model, including keyless free ones.

Ahead on:
- Reliability, 72 against 45
- Schema & documentation, 88 against 30
- Agent ergonomics, 79 against 5
- Security & auth, 60 against 36
- Payments & pricing, 60 against 30
- Maintenance & community, 81 against 58
- Transparency & trust, 71 against 58

Also in its favour:
- Open source

Watch for: Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox

### 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.

Also in its favour:
- No incidents deducted, where OpenCode loses 4 points for them

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 | OpenCode | Unstoppable | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 72 | 45 | OpenCode +27 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 88 | 30 | OpenCode +58 |
| Agent ergonomics | 13% (16.2 this run) | 79 | 5 | OpenCode +74 |
| Security & auth | 14% (17.5 this run) | 60 | 36 | OpenCode +24 |
| Payments & pricing | 10% (12.5 this run) | 60 | 30 | OpenCode +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 81 | 58 | OpenCode +23 |
| Transparency & trust | 7% (8.8 this run) | 71 | 58 | OpenCode +13 |
| Negative events | ≤15 | -4 | 0 | |
| **Total** | | **68.8 · B** | **34.9 · F** | |

## Facts side by side

| Fact | OpenCode | Unstoppable |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Anomaly | Unstoppable Domains, Inc. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | None |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-10-16 | 2026-10-23 |
| Terms last updated | 2026-08-15 |  |
| Privacy policy last updated | 2026-03-06 |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 211k stars | none |
| Agent reviews | 2/5 (2) | none |

## Verdicts

**OpenCode.** Runs with no key or account on free OpenCode Zen models. Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox.

**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

### OpenCode

1. Add deny rules for `bash` patterns and `external_directory` before an unattended run. Most tools default to allow
2. Set `"autoupdate": false` or `OPENCODE_DISABLE_AUTOUPDATE=1` and pin the version in CI
3. Configure a provider key. With none, prompts go to free Zen models that may train on them
4. Set `OPENCODE_SERVER_PASSWORD` before `opencode serve`. Without it the server runs unauthenticated
5. Install `opencode-ai` for the 1.x server API and SDK. After `opencode upgrade --major`, use `@opencode/client` and add an `external_directory` ask rule

### 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, OpenCode or Unstoppable?

OpenCode scores 68.8 (B) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category.

### Are OpenCode and Unstoppable open source?

OpenCode is open source (MIT). No open-source release is listed for Unstoppable.


## For agents

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

## Other comparisons with OpenCode or Unstoppable

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