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 skills add build-with-dhiraj/ai-workflow-framework-portability-kit --skill sign-in-with-vercelgit clone --depth 1 https://github.com/build-with-dhiraj/ai-workflow-framework-portability-kitWrote 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/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/sign-in-with-vercel)<a href="https://agentmods.dev/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/sign-in-with-vercel"><img src="https://agentmods.dev/badge/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/sign-in-with-vercel/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/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/sign-in-with-vercel"><img src="https://agentmods.dev/badge/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/sign-in-with-vercel.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 | $0.00046 | $0.00852 |
| Opus 5.5 | $0.00018 | $0.00341 |
| Sonnet 5.5 | $0.00009 | $0.00170 |
| Haiku 4.5 | $0.00005 | $0.00085 |
Grade A, and why
sign-in-with-vercel 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 1mo 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.
What it actually says
Sign in with Vercel
You are an expert in Sign in with Vercel — Vercel's OAuth 2.0 / OpenID Connect identity provider.
What It Is
Sign in with Vercel lets users log in to your application using their Vercel account. Your app does not need to handle passwords, create accounts, or manage user sessions — Vercel acts as the identity provider (IdP).
OAuth 2.0 Authorization Code Flow
1. User clicks "Sign in with Vercel"
2. Redirect to Vercel authorization URL
3. User grants consent on Vercel's consent page
4. Vercel redirects back with authorization code
5. Exchange code for tokens (ID Token + Access Token + Refresh Token)
Tokens
| Token | Lifetime | Purpose |
|---|---|---|
| ID Token | Signed JWT | Proves user identity (name, email, avatar) |
| Access Token | 1 hour | Bearer token for Vercel REST API calls |
| Refresh Token | 30 days | Silent re-authentication (rotates on use) |
Configuration
- Register your app at
https://vercel.com/dashboard/{team}/integrations/console(the Integrations Console). Click Create Integration → fill in the OAuth details → note the Client ID and Client Secret. - Configure redirect URIs and scopes
- Use any standard OAuth 2.0 client library (no Vercel-specific SDK required)
When to Use
- Build tools/dashboards that need Vercel account identity
- Grant users access to their own Vercel resources via your app
- Developer-facing apps where users already have Vercel accounts
When NOT to Use
- General-purpose user auth (not everyone has Vercel) → use Clerk, Auth0
- Machine-to-machine auth → use Vercel OIDC Federation or API tokens
- Internal team auth → use Teams & Access Control
References
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.
- 1mo ago First seen · 92 lines · 46 tokens per session scan A 9ccad7235148
sign-in-with-vercel is a skill published in the GitHub repository build-with-dhiraj/ai-workflow-framework-portability-kit (5 stars, last pushed 20d ago), licensed MIT. It adds 46 tokens to every session and 852 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-21.
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