# Antigravity CLI vs DeepSeek Harness (dsh)

> Antigravity CLI scores 57.4 (C) 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

Antigravity CLI scores 57.4 (C) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 5 of 7 scored categories. DeepSeek Harness (dsh) leads on payments & pricing. Both do agent harnesses.

- Antigravity CLI: grade C, 57.4/100, rank #679 of 1146. Markdown https://www.anchorterminal.com/tools/antigravity-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/antigravity-cli.json
- 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
- 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

### Antigravity CLI (C)

Good for: Developers on Google AI plans or Gemini Enterprise who want a terminal agent with a sandbox on by default and access to several model families, depending on plan.

Ahead on:
- Reliability, 43 against 33
- Agent ergonomics, 78 against 68
- Security & auth, 53 against 40

Also in its favour:
- No incidents deducted, where DeepSeek Harness (dsh) loses 6 points for them

Watch for: Closed source. The repository holds the README, changelog and examples, with no source and no licence file

### 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:
- Payments & pricing, 60 against 30

Also in its favour:
- Free to start without a card
- 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


## Score by category

| Category | Weight | Antigravity CLI | DeepSeek Harness (dsh) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 43 | 33 | Antigravity CLI +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 78 | 77 | Antigravity CLI +1 |
| Agent ergonomics | 13% (16.2 this run) | 78 | 68 | Antigravity CLI +10 |
| Security & auth | 14% (17.5 this run) | 53 | 40 | Antigravity CLI +13 |
| Payments & pricing | 10% (12.5 this run) | 30 | 60 | DeepSeek Harness (dsh) +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 68 | 71 | DeepSeek Harness (dsh) +3 |
| Transparency & trust | 7% (8.8 this run) | 51 | 50 | Antigravity CLI +1 |
| Negative events | ≤15 | 0 | -6 | |
| **Total** | | **57.4 · C** | **49.2 · D** | |

## Facts side by side

| Fact | Antigravity CLI | DeepSeek Harness (dsh) |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Google | DeepSeek |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Proprietary. The repository holds the README, changelog and examples, with no source and no licence file. Use is under the Google Antigravity Additional Terms of Service, the Google Terms of Service and the Privacy Policy | MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-08 | 2026-10-17 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | 2026-10-01 | no document linked |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | not found in the text |  |
| 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 | none | 245k npm/wk |
| Agent reviews | none | 3/5 (4) |

## Verdicts

**Antigravity CLI.** Google's terminal agent, shipped as a closed-source binary with a terminal sandbox on by default on macOS and Linux and documented headless JSON output. Interactions are used to improve Google products unless users opt out, and a headless run exits 0 when a tool is denied.

**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.

## Before you call either

### Antigravity CLI

1. Read the `status` field from `--output-format json` and read stderr too. A tool refused for lack of approval still exits 0
2. Pre-approve each shell command and tool a headless run needs with `action(target)` rules under `permissions.allow` in ~/.gemini/antigravity-cli/settings.json, because headless runs cannot ask
3. Export `GEMINI_API_KEY` after setting modelProvider to gemini. The CLI won't start when the key is missing, and setting the variable alone has no effect
4. Turn off Enable Telemetry in the Account settings before running on private repositories if Interactions should not be used for product improvement
5. Set `--print-timeout` explicitly. The docs give a five-minute default, while `agy --help` shows 0s

### 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

## Questions

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

Antigravity CLI scores 57.4 (C) on agent readiness against DeepSeek Harness (dsh)'s 49.2 (D), and leads in 5 of 7 scored categories. DeepSeek Harness (dsh) leads on payments & pricing.

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

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


## For agents

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

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