provider-auth

provider-auth is a cursor rule for Cursor from coddy-project/coddy-agent. It costs 0 tokens per session (254 once invoked), scanned A, original, MIT.

A set of rules for keeping authentication separate between configured coding-agent providers and their command-line logins.

In plain words
What is it for?
It governs sign-in, credential lookup, provider probing, usage invalidation, and requests made through provider proxies.
Why use it?
It prevents one provider row from using another row's credentials and keeps login, usage, and model checks tied to the correct provider.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions Codex.

Good fit It governs sign-in, credential lookup, provider probing, usage invalidation, and requests made through provider proxies.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/coddy-project/coddy-agent/provider-auth
Install

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.

Clone the repo
git clone --depth 1 https://github.com/coddy-project/coddy-agent

Made for: Cursor.

Wrote 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.

agentmods badge for provider-auth

README.md
[![agentmods](https://agentmods.dev/badge/rules/coddy-project/coddy-agent/provider-auth/github.svg)](https://agentmods.dev/rules/coddy-project/coddy-agent/provider-auth)
Your own site
<a href="https://agentmods.dev/rules/coddy-project/coddy-agent/provider-auth"><img src="https://agentmods.dev/badge/rules/coddy-project/coddy-agent/provider-auth/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.

agentmods 80×15 button for provider-auth

Your own site · 80×15
<a href="https://agentmods.dev/rules/coddy-project/coddy-agent/provider-auth"><img src="https://agentmods.dev/badge/rules/coddy-project/coddy-agent/provider-auth.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 254 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00254
Opus 5.5 $0.00000 $0.00102
Sonnet 5.5 $0.00000 $0.00051
Haiku 4.5 $0.00000 $0.00025

Measured 11d ago against content hash d1861b47602a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 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.

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.

.cursor/rules/provider-auth.mdc · 24 lines

What it actually says

Provider authentication isolation

  • A machine-wide Codex or Devin CLI login serves exactly one configured row: the sole row, or among multiple rows the row named codex for Codex and devin for Devin.
  • Completion, model discovery, context-window lookup, usage, labels, dry-run, and sign-in all propagate NoCLILogin.
  • A second credential-less row cannot consume another row's login.
  • An unsaved retyped sign-in probes the requested provider type and only the current proxy.
  • Usage invalidation applies only to the owning row.
  • Provider requests still obey the provider-proxy rule.
Changes

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.

  1. 11d ago First seen · 24 lines · 0 tokens per session scan A d1861b47602a

Subscribe to this mod's changes

provider-auth is a cursor rule published in the GitHub repository coddy-project/coddy-agent (175 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 254 tokens. 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 2026-10-05.