Official agent skill

Verification

Full-story verification — infers what the user is building, then verifies the complete flow end-to-end: browser → API → data → response.

OfficialCustom licenceAuto-check: notesProduct & Project Management

Install Verification

skills CLI

$ npx skills add vercel/vercel-plugin --skill verification -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install vercel/vercel-plugin verification --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/vercel/vercel-plugin.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/verification .claude/skills/verification && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "verification" agent skill from https://github.com/vercel/vercel-plugin/tree/main/skills/verification into .claude/skills/verification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "verification", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/vercel/vercel-plugin/tree/main/skills/verification

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add vercel/vercel-plugin --skill verification -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install vercel/vercel-plugin verification --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/vercel/vercel-plugin.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/verification .agents/skills/verification && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "verification" agent skill from https://github.com/vercel/vercel-plugin/tree/main/skills/verification into .agents/skills/verification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "verification", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add vercel/vercel-plugin --skill verification -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install vercel/vercel-plugin verification --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/vercel/vercel-plugin.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/verification .cursor/skills/verification && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "verification" agent skill from https://github.com/vercel/vercel-plugin/tree/main/skills/verification into .cursor/skills/verification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "verification", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/vercel/vercel-plugin.git --path skills/verification

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add vercel/vercel-plugin --skill verification -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install vercel/vercel-plugin verification --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/vercel/vercel-plugin.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/verification .gemini/skills/verification && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "verification" agent skill from https://github.com/vercel/vercel-plugin/tree/main/skills/verification into .gemini/skills/verification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "verification", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install vercel/vercel-plugin verification

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add vercel/vercel-plugin --skill verification -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/vercel/vercel-plugin.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/verification .github/skills/verification && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "verification" agent skill from https://github.com/vercel/vercel-plugin/tree/main/skills/verification into .github/skills/verification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "verification", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add vercel/vercel-plugin --skill verification -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install vercel/vercel-plugin verification --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/vercel/vercel-plugin.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/verification .opencode/skills/verification && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "verification" agent skill from https://github.com/vercel/vercel-plugin/tree/main/skills/verification into .opencode/skills/verification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "verification", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: verification
GitHub stars: 301
Token cost: ~2k tokens
SKILL.md length: 647 words
Files: 1
Skills in repo: 38
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: Custom licence

At a glance

Full-story verification — infers what the user is building, then verifies the complete flow end-to-end: browser → API → data → response.

Works in 4 steps: Infer the User Story → Establish Evidence Baseline → Walk the Data Flow → …
Dev server start and why isnt this working signals
SKILL.md covers When This Triggers, Step 1 — Infer the User Story, Step 2 — Establish Evidence… and Step 3 — Walk the Data Flow, plus 3 more sections
Calls vercel

What it does

Verification is an agent skill from vercel/vercel-plugin, published by the product's own GitHub organization. Full-story verification — infers what the user is building, then verifies the complete flow end-to-end: browser → API → data → response. Triggers on dev server start and 'why isn't this working' signals.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Product & Project Management. It works with Vercel. The repository describes itself as: Comprehensive Vercel ecosystem plugin — relational knowledge graph, skills for every major product, specialized agents, and Vercel conventions. Turns any AI agent into a Vercel…

When your agent uses it

Dev server start and why isnt this working signals

Example prompts

“why isn”
“/verification”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

Infer the User Story
Establish Evidence Baseline
Walk the Data Flow
Report With Evidence

What it can do on your machine

Read from SKILL.md and the folder at commit 82fa491. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- vercel
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use vercel, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Verification loads about 2k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 647 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~54
When it runs · the whole SKILL.md, loaded when a task matches: ~2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

NoteMentions a .env fileSKILL.md:115

/` or `pages/`), and environment files (`.env*`)

NoteMentions a .env fileSKILL.md:129

| **Environment** | Check `.env.local`, `vercel env ls`, compare expected vs actual | Missing vars, wrong values, produc

NoteMentions a .env fileSKILL.md:150

var absent** in runtime but present in `.env.local`

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 647 words (~1,961 tokens).

“You are a verification orchestrator. Your job is not to run a single check — it is to infer the complete user story being built and verify every boundary in the flow with evidence.”

— opening of SKILL.md by vercel, Custom licence

name: verification
summary: Verify full user story: browser + server + data flow + env
metadata.priority: 7
metadata.docs: https://vercel.com/docs/projects/project-configuration
metadata.sitemap: https://vercel.com/sitemap.xml
metadata.bashPatterns: \bnext\s+dev\b, \bnpm\s+run\s+dev\b, \bpnpm\s+dev\b, \bbun\s+run\s+dev\b, \byarn\s+dev\b, \bvite\s*(dev)?\b, \bvercel\s+dev\b, \bastro\s+dev\b
retrieval.aliases: end to end test, full stack verify, flow test, integration check
retrieval.intents: verify full flow, test end to end, check if app works, validate implementation
retrieval.entities: browser, API, data flow, end-to-end, verification

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/verification of vercel/vercel-plugin.

Open the folder on GitHubat commit 82fa491

Compare with similar skills

Verification next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Verification compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Verification this skillvercel/vercel-plugin	301	—	~2k	Automated safety check: Notes	Custom licence	yesterday
Nextjs Supabase VercelTechNomadCode/AI-Product-Development-Toolkit	1k	1 repos	~159	Automated safety check: Pass	MIT	2 days ago
Sveltekit WebappLeoYeAI/openclaw-master-skills	2.2k	—	~5.2k	Automated safety check: Notes	MIT	2 mo ago
Agent Browser CLIvercel-labs/agent-browser	44k	24 repos	~864	Automated safety check: Pass	Apache-2.0	yesterday
Vercel Deploybytedance/deer-flow	83k	10 repos	~797	Automated safety check: Pass	MIT	today
Vercel Optimize Auditvercel-labs/agent-skills	32k	8 repos	~4.3k	Automated safety check: Pass	None	1 mo ago

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Questions about Verification

What does Verification do?

Full-story verification — infers what the user is building, then verifies the complete flow end-to-end: browser → API → data → response. Verification is an agent skill from vercel/vercel-plugin, published by the product's own GitHub organization. Full-story verification — infers what the user is building, then verifies the complete flow end-to-end: browser → API → data → response.

When should I use Verification?

Verification fits situations like: dev server start and why isnt this working signals.

How do I install Verification in Claude Code?

Run `npx skills add vercel/vercel-plugin --skill verification -a claude-code`. Or copy the skill folder (skills/verification in vercel/vercel-plugin) into .claude/skills/verification in your project. Claude Code loads it when a task matches its description.

How do I install Verification in Codex?

Run `npx skills add vercel/vercel-plugin --skill verification -a codex`. Or copy the skill folder (skills/verification in vercel/vercel-plugin) into .agents/skills/verification in your project. Codex loads it when a task matches its description.

Can I use Verification in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add vercel/vercel-plugin --skill verification -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/verification, .gemini/skills/verification, .github/skills/verification and .opencode/skills/verification in your project.

What does Verification need to run?

Going by SKILL.md and its folder, Verification needs the command-line tools its instructions call (vercel).

Does Verification access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Verification safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Verification use?

Verification has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Verification use?

About 2k tokens (SKILL.md is roughly 7.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Verification?

Skills that share tags, products or a category with Verification: Nextjs Supabase Vercel (TechNomadCode/AI-Product-Development-Toolkit, 1k stars), Sveltekit Webapp (LeoYeAI/openclaw-master-skills, 2.2k stars), Agent Browser CLI (vercel-labs/agent-browser, 44k stars) and Vercel Deploy (bytedance/deer-flow, 83k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Verification?

vercel (a GitHub organization, an official publisher) maintains it in vercel/vercel-plugin, which has 301 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on October 6, 2026.

Source: vercel/vercel-plugin on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Verification

Install Verification

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

Nextjs Supabase Vercel

Sveltekit Webapp

Agent Browser CLI

Vercel Deploy

Vercel Optimize Audit

AI SDK

More from vercel/vercel-plugin

Deployments Cicd

Plugin Audit

Vercel CLI

AI Gateway

Vercel Services

Access Protected Vercel Deployment

Questions about Verification

Install Verification

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from vercel/vercel-plugin

Related

Questions about Verification