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 OpenHands/extensions --skill vercelgit clone --depth 1 https://github.com/OpenHands/extensionsWrote 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/openhands/extensions/vercel)<a href="https://agentmods.dev/skills/openhands/extensions/vercel"><img src="https://agentmods.dev/badge/skills/openhands/extensions/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/openhands/extensions/vercel"><img src="https://agentmods.dev/badge/skills/openhands/extensions/vercel.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00036 | $0.00724 |
| Opus 5.5 | $0.00014 | $0.00290 |
| Sonnet 5.5 | $0.00007 | $0.00145 |
| Haiku 4.5 | $0.00004 | $0.00072 |
Grade A, and why
vercel 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -H "x-vercel-protection-bypass: <secret>" https://your-preview-url.vercel.app How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vercel Deployment Guide
Deployment Protection and Agent Access
Vercel deployments may have Deployment Protection enabled, which requires authentication to access preview deployments. This can block automated testing and agent access to preview URLs.
Identifying Protected Deployments
If you encounter a login page or authentication requirement when accessing a Vercel preview URL, the deployment has protection enabled. Signs include:
- Redirect to
vercel.com/loginor SSO login page - 401/403 errors when accessing the deployment
- Preview URLs that require Vercel team membership
Enabling Agent Access with Protection Bypass
To allow agents and automated systems to access protected deployments, users need to set up Protection Bypass for Automation:
-
Navigate to Project Settings
- Go to the Vercel Dashboard
- Select the project
- Click on Settings → Deployment Protection
-
Generate a Protection Bypass Secret
- Under "Protection Bypass for Automation", click Generate Secret
- Copy the generated secret securely
-
Using the Bypass Secret
The secret can be used in two ways:
As a Header:
curl -H "x-vercel-protection-bypass: <secret>" https://your-preview-url.vercel.appPowerShell equivalent:
Invoke-WebRequest -Headers @{ "x-vercel-protection-bypass" = "<secret>" } -Uri https://your-preview-url.vercel.appAs a Query Parameter:
https://your-preview-url.vercel.app?x-vercel-protection-bypass=<secret> -
For Browser-Based Testing
- Append
?x-vercel-protection-bypass=<secret>to the preview URL - The secret will be stored in a cookie for subsequent requests
- Append
Alternative: Disable Protection for Previews
If protection bypass is not suitable, users can disable protection for preview deployments:
- Go to Settings → Deployment Protection
- Set "Vercel Authentication" to Only Production Deployments or Disabled
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 109 lines · 36 tokens per session scan A 406063401720
vercel is a skill published in the GitHub repository OpenHands/extensions (167 stars, last pushed today), licensed MIT. It adds 36 tokens to every session and 724 once invoked, about $0.0001 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 2026-09-03.
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