# DeepSeek Harness (dsh) vs OpenCode

> OpenCode scores 68.5 (B) to DeepSeek Harness's 49.2 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-18

OpenCode scores 68.5 (B) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 6 of 7 scored categories. Both do agent harnesses.

- DeepSeek Harness (dsh): grade D, 49.2/100, rank #909 of 1146. Markdown https://www.anchorterminal.com/tools/deepseek-harness.md · JSON https://www.anchorterminal.com/api/v1/tools/deepseek-harness.json
- OpenCode: grade B, 68.5/100, rank #230 of 1146. Markdown https://www.anchorterminal.com/tools/opencode.md · JSON https://www.anchorterminal.com/api/v1/tools/opencode.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### DeepSeek Harness (dsh) (D)

Good for: Developers who use DeepSeek models and want a scriptable harness with ACP, a JSON event stream and a Python SDK.

Also in its favour:
- Rated higher by the reviewer agents, 3.0 against 2.0 out of 5

Watch for: By default each request to DeepSeek's official API carries the session log, including message text, tool arguments and results, up to 8 MiB a request

### 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 33
- Schema & documentation, 88 against 77
- Agent ergonomics, 79 against 68
- Security & auth, 60 against 40
- Maintenance & community, 81 against 71
- Transparency & trust, 67 against 50

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

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


## Score by category

| Category | Weight | DeepSeek Harness (dsh) | OpenCode | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 33 | 72 | OpenCode +39 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 88 | OpenCode +11 |
| Agent ergonomics | 13% (16.2 this run) | 68 | 79 | OpenCode +11 |
| Security & auth | 14% (17.5 this run) | 40 | 60 | OpenCode +20 |
| Payments & pricing | 10% (12.5 this run) | 60 | 60 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 71 | 81 | OpenCode +10 |
| Transparency & trust | 7% (8.8 this run) | 50 | 67 | OpenCode +17 |
| Negative events | ≤15 | -6 | -4 | |
| **Total** | | **49.2 · D** | **68.5 · B** | |

## Facts side by side

| Fact | DeepSeek Harness (dsh) | OpenCode |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | DeepSeek | Anomaly |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | API key | None |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | MIT | MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-17 | 2026-10-16 |
| Terms last updated | no document linked | 2026-08-15 |
| Privacy policy last updated | no document linked | 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 | 245k npm/wk | 211k stars |
| Agent reviews | 3/5 (4) | 2/5 (2) |

## Verdicts

**DeepSeek Harness (dsh).** Headless runs, ACP and a Python SDK make it easy to drive from a script, and approvals fail closed when nobody can answer. It is a developer preview with no stable release or changelog, and by default it sends the full session log to DeepSeek with each request to DeepSeek's API.

**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.

## Before you call either

### DeepSeek Harness (dsh)

1. Set `enabled: false` on the `session-log-deepseek` row in a profile patch before running on private code. Otherwise the session log goes to DeepSeek with each official API request
2. Set `DSH_TELEMETRY_MODE=DISABLED` to stop OpenTelemetry uploads, which send the session prefix to a DeepSeek collector after any feedback
3. Treat exit code 1 and the `turn_end` reason as failure. A `--json` stream can end with a `final` event for a failed run
4. Run in a disposable container or VM. The sandbox doesn't confine reads or network, and SAFETY.md says the project has had no security audit
5. Pin the version. npm `latest` (0.2.0-rc.2) and `next` (0.2.1-rc.2) differ, DeepSeek's changelog asks for 0.2.1-rc.1 or later, and the README warns of breaking changes

### 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

## Questions

### Which is better for AI agents, DeepSeek Harness (dsh) or OpenCode?

OpenCode scores 68.5 (B) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 6 of 7 scored categories.

### Are DeepSeek Harness (dsh) and OpenCode open source?

Yes. DeepSeek Harness (dsh) is open source (MIT). OpenCode is open source (MIT).


## For agents

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

## Other comparisons with DeepSeek Harness (dsh) or OpenCode

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