Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add commands/attendantlion8/provider-fallback-plugin/provider-authgit clone --depth 1 https://github.com/AttendantLion8/provider-fallback-pluginWrote 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/commands/attendantlion8/provider-fallback-plugin/provider-auth)<a href="https://agentmods.dev/commands/attendantlion8/provider-fallback-plugin/provider-auth"><img src="https://agentmods.dev/badge/commands/attendantlion8/provider-fallback-plugin/provider-auth.svg" alt="Measured on agentmods" 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 | $0.00015 | $0.01285 |
| Opus 5 | $0.00008 | $0.00642 |
| Sonnet 5 | $0.00003 | $0.00257 |
| Haiku 4.5 | $0.00002 | $0.00128 |
Grade A, and why
provider-auth scanned grade A with 0 findings 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 5d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Provider Authentication Configuration
Configure authentication methods for all supported providers. Supports three auth types with automatic priority:
| Priority | Type | Description |
|---|---|---|
| 100 | Subscription | Pro/Plus/Max subscriptions (highest priority) |
| 50 | OAuth | OAuth 2.0 tokens (Antigravity-style) |
| 10 | API | Direct API keys (lowest priority) |
Usage
View Auth Status
/provider-auth status
/provider-auth status anthropic
Shows all configured providers grouped by vendor with auth type and status.
Set API Key
/provider-auth setup anthropic-api --key sk-ant-...
/provider-auth setup openai-api --key sk-...
/provider-auth setup google-api --key AIza...
Configure OAuth (Antigravity-style)
/provider-auth oauth google-oauth
/provider-auth oauth anthropic-oauth
/provider-auth oauth openai-oauth
This will:
- Prompt for OAuth client ID and secret
- Start local callback server on port 19284
- Open browser for authorization
- Exchange code for tokens
- Store tokens securely
Set Subscription Token
/provider-auth setup anthropic-subscription --key <session-token>
/provider-auth setup openai-subscription --key <session-token>
/provider-auth setup google-subscription --key <session-token>
Refresh OAuth Tokens
/provider-auth refresh google-oauth
/provider-auth refresh anthropic-oauth
Remove Credentials
/provider-auth remove anthropic-api
/provider-auth remove google-oauth
Provider IDs
Anthropic
| ID | Type | Auth Method |
|---|---|---|
anthropic-subscription |
Subscription | Claude Pro/Max session token |
anthropic-oauth |
OAuth | OAuth 2.0 flow |
anthropic-api |
API | API key from console.anthropic.com |
OpenAI
| ID | Type | Auth Method |
|---|---|---|
openai-subscription |
Subscription | ChatGPT Plus/Pro session |
openai-oauth |
OAuth | OAuth 2.0 flow |
openai-api |
API | API key from platform.openai.com |
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.
- 5d ago First seen · 190 lines · 15 tokens per session scan A 4920e83dcbf2
provider-auth is a command published in the GitHub repository AttendantLion8/provider-fallback-plugin (2 stars, last pushed 8mo ago), licensed MIT. It adds 15 tokens to every session and 1,285 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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