dsh-antigravity

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Google Antigravity / Cloud Code Assist model provider plugin crafted for DeepSeek Harness (DSH).

Access Google Cloud Code Assist's robust suite of coding models directly through Google OAuth with no API key required, featuring large context windows and advanced reasoning.

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✨ Features

• Day-One Gemini 3.8 Flash Support: Full native support for Google's latest gemini-3.8-flash-tiered with 1M context window, direct model targeting, and configurable thinking levels (Low / Medium / High), defaulting to helpful low-level reasoning.
• Intelligent Endpoint Auto-Failover & 429 Resilience:
  • Sandbox Promoted as Primary Endpoint: By default, daily-cloudcode-pa.sandbox.googleapis.com is prioritized as the primary endpoint (zero extra round-trip latency, immune to account-wide throttles), while the original standard endpoint acts as a reliable fallback.
  • Seamless 429 recovery: Progresses through fallback endpoints upon 429 rate limits without prematurely aborting valid streams.
  • Accurate Google 429 RESOURCE_EXHAUSTED quota detection with friendly live reset countdowns.
• Robust Multi-Account Credentials & Quota Persistence:
  • Resolved OAuth token refresh deserialization sync flaws to prevent token rollback and 401 loops.
  • Supports multi-account rotation and real-time quota tracking.
• Modernized DSH-Native UI:
  • Seamless dark and light theme adaptability following DSH theme tokens;
  • Distinct live quota bars for Gemini (Emerald) and Claude & GPT (Violet/Cyan);
  • Filter tabs (All, Gemini, Claude & GPT, Enabled).
• Clean Model Catalog: Pruned legacy and broken variants, focusing on the 5 core flagship models.
• Dual-ID Compatibility: Registers both dsh-antigravity and @wisexin/dsh-antigravity to ensure 100% activation success across marketplace, GitHub, and local tarball installations.

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📦 Installation

Option 1: DSH Marketplace

Search antigravity in the DSH Plugin Marketplace and click Install.

Option 2: From GitHub

dsh plugin --profile web add github:WiseXin/dsh-antigravity

Option 3: From Local Tarball

npm run pack:dist
dsh plugin --profile web add ./dist/wisexin-dsh-antigravity-0.1.3.tgz

Restart DSH:

dsh web

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🔐 Authentication

1. Open Settings > Antigravity in DSH;
2. Click Sign in with Google to complete standard browser OAuth;
3. Once signed in, live quota pools and reset countdowns will display automatically:
   • Gemini Models Pool: Shared among Gemini 3.8 Flash, 3.7 Flash, etc.
   • Claude & GPT Models Pool: Independent pool for Claude Opus 4.6, Claude Sonnet 4.6, and GPT-OSS 120B.
4. Select Antigravity in your chat model picker and start coding.

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📋 Model Catalog

Model ID	Display Name	Provider	Features	Default
gemini-3.8-flash	Gemini 3.8 Flash	Google	🧠 Thinking (Low/Med/High) · 👁️ Vision · 1M Context	Enabled
gemini-3.7-flash	Gemini 3.7 Flash	Google	🧠 Thinking (Low/Med/High) · 👁️ Vision · 1M Context	Enabled
claude-sonnet-4-6	Claude Sonnet 4.6	Anthropic	🧠 Thinking · 👁️ Vision · 200k Context	Enabled
claude-opus-4-6	Claude Opus 4.6	Anthropic	🧠 Flagship Large · 👁️ Vision · 250k Context	Enabled
gpt-oss-120b	GPT-OSS 120B	OpenAI	Open Weight Model · 131k Context	Enabled

Note: Due to upstream sandbox endpoint capabilities, if you experience 404/429 with 3.7 models, gemini-3.8-flash is strongly recommended as the daily driver.

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⚖️ Disclaimers & Acknowledgments

• Disclaimer: Unofficial community integration. Not affiliated with or endorsed by Google, Anthropic, or OpenAI.
• Acknowledgment: Derived and enhanced from the open-source community project LiZhenNet/dsh-antigravity.

📄 License

MIT License