Borrowing it
Nothing to install: this file belongs to anthonyhaussman/opencode-agy-auth. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/anthonyhaussman/opencode-agy-auth/main/AGENTS.mdgit clone --depth 1 https://github.com/anthonyhaussman/opencode-agy-authWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/anthonyhaussman/opencode-agy-auth/agents-md)<a href="https://agentmods.dev/instructions/anthonyhaussman/opencode-agy-auth/agents-md"><img src="https://agentmods.dev/badge/instructions/anthonyhaussman/opencode-agy-auth/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/anthonyhaussman/opencode-agy-auth/agents-md"><img src="https://agentmods.dev/badge/instructions/anthonyhaussman/opencode-agy-auth/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.04665 | $0.04665 |
| Opus 5.5 | $0.01866 | $0.01866 |
| Sonnet 5.5 | $0.00933 | $0.00933 |
| Haiku 4.5 | $0.00466 | $0.00466 |
Grade A, and why
opencode-agy-auth AGENTS.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
The script uses Node's built-in `fetch` (HTTP/2 capable). This is required because curl's HTTP/1.0 fallback fails due to network-level stream resets when sending the `Authorization` header against Google APIs from certai How it starts
The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
OpenCode plugin that adds the Google Gemini Antigravity CLI (agy) OAuth provider with dual compatibility for both OpenCode v1 and OpenCode v2 runtimes. This plugin intercepts @ai-sdk/google requests and rewrites them to the Antigravity Code Assist endpoint with OAuth bearer auth, project context resolution, and server-supplied model enum mapping. The plugin ships its own agy_quota and agy_quota_summary tools as well as CLI quota commands.
Dual v1 and v2 Architecture
The package exports a single composite default export from index.ts that provides simultaneous support for OpenCode v1 and OpenCode v2 runtimes without requiring separate packages.
Runtime execution paths
- OpenCode v1 (>= 1.18.29): The v1 runtime loads the default export and invokes the
server(options)hook. This returns the v1 plugin object (config,tool,auth) defined insrc/plugin.ts. Older v1 versions prior to 1.18.29 only supported function exports; 1.18.29 and newer support object exports withserver(). - OpenCode v2: The v2 runtime inspects the default export for
idand executessetup(ctx). This adapter is orchestrated insrc/plugin/v2.ts(using contracts defined insrc/plugin/types.ts) and decomposed into modular units undersrc/plugin/:src/plugin/oauth-authorize.ts: registers thegoogle-agyOAuth integration method with PKCE flow.src/plugin/v2-fetch.ts:createV2FetchInterceptorintercepts AI SDK client initialization (ctx.aisdk.hook("sdk", ...)) to inject dummyapiKeyand handle Code Assist transformations.src/plugin/v2-session.ts: session hookshttp.request,http.response, andretryhandle request rewriting, streaming transformation, and backoff.src/plugin/v2-storage.ts: dual auth storage helpers reading and writing credentials to~/.local/share/opencode/auth.jsonalongside v2 auth store.src/plugin/headers.ts: shared safe HTTP header and URL parsing utilities across v1 and v2.src/plugin/tier.ts: shared model definitions (STATIC_MODELS_SIMPLE,TIER_MAPPING) and tier resolution (resolveModelTier).src/plugin/quota.ts&src/plugin/quota-summary.ts: tool definitions and v2 command mappings (agy-quota,agy-quota-summary).
- Shared engine layer: Both v1 and v2 adapters delegate all underlying business logic to
src/sdk/:- Request preparation and endpoint transformations (
src/sdk/request/) - Quota fetching and telemetry (
src/sdk/fetch_quota.ts,src/plugin/quota.ts,src/plugin/quota-summary.ts) - Backoff retry algorithms and error parsing (
src/sdk/retry/) - Models catalog resolution via
models.json(src/sdk/fetch_models.ts,src/sdk/request/prepare.ts) - OAuth credentials and project context (
src/plugin/project/context.ts)
- Request preparation and endpoint transformations (
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago Changed · +16 tokens per session 47399703de99
- 13d ago First seen · 211 lines · 4,649 tokens per session scan A 6e2b95791bb8
opencode-agy-auth AGENTS.md is an instructions file published in the GitHub repository anthonyhaussman/opencode-agy-auth (31 stars, last pushed 2d ago), licensed Apache-2.0. It adds 4,665 tokens to every session, about $0.0187 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-14.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.