Vercel Has a Free API You Should Know About

Vercel isn't just a hosting platform — its REST API gives you programmatic control over deployments, domains, and edge config.

The Deployments API

# List deployments
curl "https://api.vercel.com/v6/deployments" \
  -H "Authorization: Bearer $VERCEL_TOKEN"

# Create a deployment from files
curl -X POST "https://api.vercel.com/v13/deployments" \
  -H "Authorization: Bearer $VERCEL_TOKEN" \
  -d '{
    "name": "my-app",
    "files": [
      { "file": "index.html", "data": "<h1>Hello World</h1>" },
      { "file": "api/hello.js", "data": "export default (req, res) => res.json({ hello: true })" }
    ]
  }'

Edge Config — Global Key-Value

import { get } from '@vercel/edge-config'

// Read in <1ms at the edge
const featureFlags = await get('feature-flags')
const maintenanceMode = await get('maintenance')

if (maintenanceMode) {
  return new Response('Down for maintenance', { status: 503 })
}

Vercel KV (Redis)

import { kv } from '@vercel/kv'

// Rate limiting
const ip = request.headers.get('x-forwarded-for')
const requests = await kv.incr(`rate:${ip}`)
await kv.expire(`rate:${ip}`, 60)

if (requests > 100) {
  return new Response('Too Many Requests', { status: 429 })
}

// Session store
await kv.set(`session:${token}`, { userId: '123' }, { ex: 3600 })
const session = await kv.get(`session:${token}`)

Vercel Blob — File Storage

import { put, list, del } from '@vercel/blob'

// Upload
const blob = await put('avatars/user-123.jpg', file, {
  access: 'public',
  contentType: 'image/jpeg'
})
console.log(blob.url) // https://xxx.public.blob.vercel-storage.com/avatars/user-123.jpg

// List
const { blobs } = await list({ prefix: 'avatars/' })

// Delete
await del(blob.url)

Cron Jobs

// vercel.json
{
  "crons": [
    { "path": "/api/daily-report", "schedule": "0 9 * * *" },
    { "path": "/api/cleanup", "schedule": "0 */6 * * *" }
  ]
}

Real-World Use Case

A SaaS company was managing feature flags in a JSON file, redeploying every time they changed. They switched to Vercel Edge Config: update a value via API, it propagates globally in <100ms. No redeploy. Their feature flag latency went from "minutes to deploy" to "milliseconds to propagate."

Vercel turned deployment infrastructure into a developer API.

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