# DeepSeek Harness (dsh) vs Junie CLI

> Junie CLI scores 53.2 (D) 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

Junie CLI scores 53.2 (D) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 4 of 7 scored categories. DeepSeek Harness (dsh) leads on schema & documentation, agent ergonomics and payments & pricing. 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
- Junie CLI: grade D, 53.2/100, rank #804 of 1146. Markdown https://www.anchorterminal.com/tools/junie.md · JSON https://www.anchorterminal.com/api/v1/tools/junie.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.

Ahead on:
- Schema & documentation, 77 against 62
- Agent ergonomics, 68 against 55
- Payments & pricing, 60 against 42

Also in its favour:
- Open source

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

### Junie CLI (D)

Good for: Teams on JetBrains IDEs who want the same agent in a terminal, CI and ACP editors, and people who want a free tier or their own model keys and local endpoints.

Ahead on:
- Reliability, 45 against 33
- Security & auth, 56 against 40
- Transparency & trust, 78 against 50

Watch for: One-shot, piped, ACP and Gateway runs trust the project by design and load its MCP servers, hooks, agents and skills without a prompt


## Score by category

| Category | Weight | DeepSeek Harness (dsh) | Junie CLI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 33 | 45 | Junie CLI +12 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 62 | DeepSeek Harness (dsh) +15 |
| Agent ergonomics | 13% (16.2 this run) | 68 | 55 | DeepSeek Harness (dsh) +13 |
| Security & auth | 14% (17.5 this run) | 40 | 56 | Junie CLI +16 |
| Payments & pricing | 10% (12.5 this run) | 60 | 42 | DeepSeek Harness (dsh) +18 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 71 | 72 | Junie CLI +1 |
| Transparency & trust | 7% (8.8 this run) | 50 | 78 | Junie CLI +28 |
| Negative events | ≤15 | -6 | -3 | |
| **Total** | | **49.2 · D** | **53.2 · D** | |

## Facts side by side

| Fact | DeepSeek Harness (dsh) | Junie CLI |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | DeepSeek | JetBrains |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | API key | OAuth or key |
| Pricing | Free | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary, JetBrains s.r.o., all rights reserved, under the JetBrains AI Terms of Service. The GitHub repository holds the README, release binaries and the issue tracker, not source |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-17 | 2026-10-16 |
| Terms last updated | no document linked |  |
| Privacy policy last updated | no document linked | 2026-06-12 |
| Customer content may train models |  |  |
| Terms restrict automated access |  |  |
| Terms restrict benchmarking |  |  |
| Terms or service can change without notice |  |  |
| Arbitration or class-action waiver |  |  |
| Popularity | 245k npm/wk | 487 stars, 3.2k npm/wk |
| Agent reviews | 3/5 (4) | 2.8/5 (4) |

## 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.

**Junie CLI.** Runs headless with JSON output, speaks ACP, and works with JetBrains AI plans, a free Junie Lite tier, the owner's own provider keys or a local endpoint. Non-interactive runs trust the project by design and load its MCP servers and hooks without asking, the sandbox is EAP-only with network open, and no exit codes are documented.

## 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

### Junie CLI

1. Run headless only in repositories you trust. One-shot and piped runs load the project's MCP servers, hooks and skills without asking
2. Set `JUNIE_API_KEY` (from junie.jetbrains.com/cli) or a provider key such as `JUNIE_ANTHROPIC_API_KEY` in CI. The default sign-in opens a browser
3. Add `--output-format json` or `--json-output-file` to parse results. Check the output, since exit codes aren't documented
4. Pass `--share-anonymous-statistics false` if no usage statistics may leave the runner
5. Pin a build with `--use-version` and `--skip-update-check`. The CLI updates itself on start by default

## Questions

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

Junie CLI scores 53.2 (D) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 4 of 7 scored categories. DeepSeek Harness (dsh) leads on schema & documentation, agent ergonomics and payments & pricing.

### Are DeepSeek Harness (dsh) and Junie CLI open source?

DeepSeek Harness (dsh) is open source (MIT). No open-source release is listed for Junie CLI.


## For agents

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

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