dsh-antigravity-auth

DSH compatibility: 0.1.4-rc.1 targets DSH 0.1.5-rc.1 as its development and minimum supported baseline, with a coherent dependency graph. Keep compatible older plugin releases for older DSH Hosts. See verification.

English | 中文

Release: v0.1.4-rc.1 (npm tag: rc).

A self-contained DeepSeek Harness Antigravity Capability Bundle. It integrates Antigravity's private OAuth session and Wire Identity for:

• the google-antigravity LLM route (Gemini 3.8/3.7/3.6 Flash, Gemini 3.1 Pro, Claude Opus, Claude Sonnet, GPT-OSS);
• a Global Antigravity Search Provider behind DSH's stock web_search tool;
• durable image generation and editing through generate_image, plus the model-facing list_images catalog;
• multimodal workspace MP4 video understanding through analyze_video;
• resilient five-hour and weekly usage/quota visualization dashboard;
• one native Antigravity Auth Settings section with Login, Search, Image Creation, and Video cards.

The settings section follows the DSH interface language (English or Chinese), including descriptions, status labels, capability control names, and quota reset text.

⚠️ Unofficial channel — personal development only. The private, account-gated Antigravity backend surface is unsupported, revocable, and may be rate-limited or changed without notice. Do not rely on it for production workloads.

0.1.4-rc.1: DSH 0.1.5-rc.1 adaptation

Updates development dependencies, peer ranges, package checks, and the matching source verification target to DSH 0.1.5-rc.1. Existing authentication, model, search, and media contracts remain covered by offline tests.

Moves the development baseline to DSH 0.1.5-rc.1. Gemini and Claude requests preserve V3 system-message text in systemInstruction; one-shot options.system remains a preface, followed by system messages in order. Account operations use authenticated /api/antigravity-auth/* routes with the existing static loopback guard. Terminal commands keep their existing names.

v0.1.4-alpha.5 highlights

• Moves the development graph and peer baseline to DSH 0.1.2-alpha.5, including current Settings, Session, Connection, client-injection, and ToolCallId APIs; this repository's lockfile contains no older DSH family.
• Adds authenticated Gemini 3.8 Flash discovery with a Medium default and captured Low/Medium/High routes, model enums, and numeric thinking budgets.
• Realigns every private Cloud Code v1internal: operation with the audited AGY CLI 1.1.24 wire identity while retaining mandatory truthful DSH secondary attribution.
• Drains successful provider terminal SSE framing and bodies, then uses the cancellation-safe async-iterable Web Stream bridge to prevent Node ERR_INVALID_STATE crashes.
• Keeps account RPC fail-closed on alpha.5: only an explicit 127.0.0.1 Web bind reaches authentication services.

Features

Shared Antigravity Login State

• Uses one Host-only auth coordinator for LLM, Search, Image, Video, and Quota operations.
• Direct OAuth 2.0 with PKCE S256: Host memory generates verifier and state handle; the browser receives only the authorization URL.
• The callback listener binds only 127.0.0.1:51121, accepting only the registered one-shot code/state pair.
• Resolves credentials through versioned owner-only storage (POSIX 0600; Windows user-data ACLs), short-lived in-memory cache, and proactive refresh before expiry.
• Coalesces concurrent refreshes in-process and enforces account/lineage consistency before persisting refreshed tokens.
• Shows connection state plus real-time visual progress bars for 5-hour and weekly quotas across Gemini and Claude/GPT model families.
• Sends no token value over /api/antigravity-auth/*. On DSH alpha.5, the real account dispatcher is mounted only for an explicit 127.0.0.1 Web bind; an absent, all-interface, or unknown bind receives an inert value-free denial handler.

LLM Routing & Models

• Registers the google-antigravity provider through DSH's public LlmAdapter seam.
• Intersects the audited @cortexkit/antigravity-auth-core@2.2.0 model snapshot with live account discovery, normalizing the provider's gemini-3.8-flash-tiered directory alias. Gemini 3.8 Flash uses the captured AGY 1.1.24 Low/Medium/High wire routes, numeric thinking budgets, model enums, userAgent envelope field, and Medium default.
• Keeps DSH's stock model selector usable when live discovery is temporarily unavailable or drifts by falling back to the pinned text snapshot; Settings still reports the live-catalog state. This advisory fallback can temporarily retain a legacy route such as Gemini 3.5 Flash, while a successful live intersection filters routes absent for the account. A successful empty intersection stays empty, while missing authentication, authorization denial, cancellation, and explicit attribution rejection remain fail-closed.
• Supports streaming with pre-delta authentication replay and preserve-by-id function call correlation across fragmented provider names. Successful terminal events drain the remaining SSE framing before DSH completion, while required cancellation paths use Node's async-iterable Web Stream bridge instead of the race-prone Readable.toWeb() adapter.

Web Search

The antigravity-search Host row registers provider ID antigravity through @deepseek-ai/dsh-web. Grounded web search requests are formatted and dispatched through the audited Wire Identity dispatcher. Results include the generated output and deduplicated, validated HTTP(S) source references.

Image Creation & Editing

generate_image presents a unified operation dispatching to Antigravity image endpoints:

• Supports prompts, up to five explicit references (session handle image:<id> or workspace path), and size/aspect controls.
• Generated image bytes are validated, decoded, signature-checked, and persisted via AttachmentStore.
• list_images provides paginated session image catalogs for image-capable models.

Video Understanding

Multimodal analyze_video tool accepts workspace MP4 videos, performing bounded frame sampling and textual comprehension.

Usage & Quota Visual Dashboard

• Renders real-time progress bars for 5-Hour and Weekly limit windows.
• Reset countdowns of at least 24 hours show days, hours, and minutes (for example, 94h 43m becomes 3d 22h 43m; Chinese uses 3天 22h 43m). Shorter countdowns retain the hour/minute format.
• Clear status tiers: Normal (>60%, emerald green), Warning (30%–60%, amber), and Low (<30%, coral red).
• Elegant loading shimmer tracks and querying spinner animations.

Requirements

• DeepSeek Harness 0.1.5-rc.1 (tested coherent dependency graph).
• Node.js ^22.19.0 or >=24.0.0.
• pnpm available on PATH (11.7.0 is the tested project package manager).
• A Google account with Antigravity access.

Install

Stop dsh web, ensure the target Host uses a coherent DSH 0.1.5-rc.1 graph, then install the exact prerelease into the intended profile:

dsh --version
dsh plugin --profile web add dsh-antigravity-auth@0.1.4-rc.1
dsh plugin --profile web list

Verify the entry, restart dsh web, and refresh the browser. This version uses the npm rc tag. An install without a version or tag selects latest, which does not include this RC1 adaptation. Older DSH Hosts should retain a compatible older plugin release.

Terminal login command

On interactive surfaces that host the DSH commands seam, the bundle registers an antigravity-auth slash command as an alternative to the Web settings card:

/antigravity-auth            # show current login state (default)
/antigravity-auth login      # start the Google OAuth authorization flow
/antigravity-auth cancel     # cancel a pending authorization
/antigravity-auth logout     # clear the shared Antigravity credential

Account operations are the terminal login entry point: they run on a local DSH Host (no WebServer at all, or one bound explicitly to 127.0.0.1) and are denied before touching the auth service only when the WebServer exposes the shared commands seam on any other interface. The account RPC keeps its own stricter ADR-0008 guard (a real dispatcher on the explicit 127.0.0.1 bind only).

login acknowledges the unofficial-channel risk note and starts the loopback OAuth flow, whose temporary callback listener binds 127.0.0.1:51121 independently of any DSH WebServer. The command then opens the Google sign-in page in your default browser with a best-effort platform opener; the authorization URL is not echoed into the command result, because CommandResult.text is persisted verbatim into the session's command/done event and the URL carries the OAuth state handle and PKCE challenge. On Windows the opener is cmd /c start "" "<url>" with the URL quoted and Node's argument rewriting disabled, so every &-separated OAuth parameter reaches the browser intact. If the opener cannot start, the command reports that failure without reproducing the URL. Complete sign-in in the browser, then run /antigravity-auth status. Tokens, verifier, codes, and callback URLs never appear in command output or the session log. DSH exposes no public transient-presentation or browser-launch API for plugins, so on a Host without a desktop browser the interactive handoff cannot complete from the terminal.

Host configuration

The bundle patch activates independent Host rows in dependency order:

Wire Identity

The Wire Identity module keeps the audited AGY CLI 1.1.24 content-request User-Agent and adds the truthful DSH identity returned by DSH's public attributionHeaders() formatter as the mandatory secondary carrier:

X-DeepSeek-Harness-Attribution: deepseek-harness/<version> (+repository-url)

Requests are code-owned: only fixed HTTPS Antigravity origins and enumerated v1internal: operation paths are accepted.

Security and limitations

• Token values never enter the browser, settings, logs, session events, or tool metadata. Only Host-side requests receive authorization headers.
• POSIX owner-only modes are enforced for auth, gate-evidence, and controlled live-image files. Windows access is governed by ACLs, so synthetic POSIX group/other bits are not treated as an access decision; symlink, file-type, size, schema, and content checks remain enforced.
• Single-account only: no account arrays, switching, rotation, quota pools, or identity fallback.
• Local logout clears local storage and in-memory caches immediately.
• DSH alpha.5 no longer exposes a per-method or Host-side carrier authority tier. The plugin therefore enables the real account RPC handler only when the public WebServer bind is exactly 127.0.0.1; absent, all-interface, and unknown binds receive only loopback-required. The browser also hides the section when ConnectionHandle.isLoopback is false, but that client hint is UX only: an owner-contained custom carrier cannot be authorized until DSH exposes a corresponding Host-side fact.
• Raw media base64 never enters session text or browser RPC.

Development

pnpm install
pnpm peers check
pnpm test
pnpm run check

pnpm run build emits:

• lib/index.js — Auth / LLM Host plugin;
• lib/search.js — Search Host plugin;
• lib/image.js — Image Host plugin;
• lib/video.js — Video Host plugin;
• lib/quota.js — Quota Host plugin;
• lib/wire-identity.js — Wire Identity Host module;
• lib/client.cjs — Loader-compatible browser settings plugin;
• lib/types/** — TypeScript declarations.

Friendship links

• LINUX DO (L 站)