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Cloudflare Wrangler & Pages

Manage Cloudflare Workers, KV, D1, R2, and secrets using the Wrangler CLI. Use when deploying workers, managing databases, storing objects, or configuring Cl...

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Description

name: cloudflare description: Manage Cloudflare Workers, KV, D1, R2, and secrets using the Wrangler CLI. Use when deploying workers, managing databases, storing objects, or configuring Cloudflare resources. Covers worker deployment, KV namespaces, D1 SQL databases, R2 object storage, secrets management, and tailing logs.

Cloudflare (Wrangler CLI)

Manage Cloudflare Workers and associated services via the wrangler CLI.

R2 Configuration

Credentials stored in ~/.openclaw/secrets.json under cloudflare.r2:

{
  "cloudflare": {
    "apiToken": "<main API token>",
    "r2": {
      "accessKeyId": "<R2 access key>",
      "secretAccessKey": "<R2 secret key>",
      "endpoint": "https://<accountId>.r2.cloudflarestorage.com",
      "bucket": "openclaw"
    }
  }
}

Lifecycle Rules (auto-delete)

R2 lifecycle rules auto-delete objects after N days. Minimum granularity is 1 day (no hours/minutes).

import boto3
from botocore.config import Config

client = boto3.client("s3", endpoint_url=r2["endpoint"],
    aws_access_key_id=r2["accessKeyId"],
    aws_secret_access_key=r2["secretAccessKey"],
    region_name="auto", config=Config(signature_version="s3v4"))

client.put_bucket_lifecycle_configuration(
    Bucket="openclaw",
    LifecycleConfiguration={
        "Rules": [{
            "ID": "auto-delete-uploads",
            "Status": "Enabled",
            "Filter": {"Prefix": "uploads/"},
            "Expiration": {"Days": 1},
        }]
    }
)

Active rule on openclaw bucket: uploads/* → deleted after 1 day. Presigned URLs expire in 1 min (no access), objects cleaned up within 24h.

Generate presigned URL (Node.js)

import { S3Client, GetObjectCommand } from "@aws-sdk/client-s3";
import { getSignedUrl } from "@aws-sdk/s3-request-presigner";
import { readFileSync } from "fs";

const { cloudflare: { r2 } } = JSON.parse(readFileSync(`${process.env.HOME}/.openclaw/secrets.json`));

const client = new S3Client({
  region: "auto",
  endpoint: r2.endpoint,
  credentials: { accessKeyId: r2.accessKeyId, secretAccessKey: r2.secretAccessKey },
});

const url = await getSignedUrl(
  client,
  new GetObjectCommand({ Bucket: r2.bucket, Key: "my-file.txt" }),
  { expiresIn: 600 } // 10 minutes
);

Prerequisites

  • Node.js v20+ required
  • Install: npm install -g wrangler or use project-local npx wrangler
  • Auth: Token stored in ~/.openclaw/secrets.json under cloudflare.apiToken
  • To use with curl/API calls: TOKEN=$(jq -r '.cloudflare.apiToken' ~/.openclaw/secrets.json)
  • To use with wrangler CLI: export CLOUDFLARE_API_TOKEN=$(jq -r '.cloudflare.apiToken' ~/.openclaw/secrets.json)
  • Verify: wrangler whoami

Quick Reference

Workers

# Initialize new worker
wrangler init <name>

# Local development
wrangler dev [script]

# Deploy
wrangler deploy [script]

# List deployments
wrangler deployments list

# View deployment
wrangler deployments view [deployment-id]

# Rollback
wrangler rollback [version-id]

# Delete worker
wrangler delete [name]

# Tail logs (live)
wrangler tail [worker]

Secrets

# Add/update secret (interactive)
wrangler secret put <key>

# Add secret from stdin
echo "value" | wrangler secret put <key>

# List secrets
wrangler secret list

# Delete secret
wrangler secret delete <key>

# Bulk upload from JSON file
wrangler secret bulk secrets.json

KV (Key-Value Store)

# Create namespace
wrangler kv namespace create <name>

# List namespaces
wrangler kv namespace list

# Delete namespace
wrangler kv namespace delete --namespace-id <id>

# Put key
wrangler kv key put <key> <value> --namespace-id <id>

# Get key
wrangler kv key get <key> --namespace-id <id>

# Delete key
wrangler kv key delete <key> --namespace-id <id>

# List keys
wrangler kv key list --namespace-id <id>

# Bulk operations (JSON file)
wrangler kv bulk put <file> --namespace-id <id>
wrangler kv bulk delete <file> --namespace-id <id>

D1 (SQL Database)

# Create database
wrangler d1 create <name>

# List databases
wrangler d1 list

# Database info
wrangler d1 info <name>

# Execute SQL
wrangler d1 execute <database> --command "SELECT * FROM users"

# Execute SQL file
wrangler d1 execute <database> --file schema.sql

# Local execution (for dev)
wrangler d1 execute <database> --local --command "..."

# Export database
wrangler d1 export <name> --output backup.sql

# Delete database
wrangler d1 delete <name>

# Migrations
wrangler d1 migrations create <database> <name>
wrangler d1 migrations apply <database>
wrangler d1 migrations list <database>

R2 (Object Storage)

# Create bucket
wrangler r2 bucket create <name>

# List buckets
wrangler r2 bucket list

# Delete bucket
wrangler r2 bucket delete <name>

# Upload object
wrangler r2 object put <bucket>/<key> --file <path>

# Download object
wrangler r2 object get <bucket>/<key> --file <path>

# Delete object
wrangler r2 object delete <bucket>/<key>

Queues

# Create queue
wrangler queues create <name>

# List queues
wrangler queues list

# Delete queue
wrangler queues delete <name>

Configuration Files

Wrangler supports both TOML and JSON/JSONC config formats:

  • wrangler.toml — traditional format
  • wrangler.json or wrangler.jsonc — newer, with JSON schema support

⚠️ Important: If both exist, JSON takes precedence. Pick one format to avoid confusion where edits to TOML are ignored.

JSONC format (with schema autocomplete)

{
  "$schema": "./node_modules/wrangler/config-schema.json",
  "name": "my-worker",
  "main": "src/index.ts",
  "compatibility_date": "2024-12-30"
}

TOML format

name = "my-worker"
main = "src/index.ts"
compatibility_date = "2024-12-30"

With bindings:

name = "my-worker"
main = "src/index.ts"
compatibility_date = "2024-12-30"

# KV binding
[[kv_namespaces]]
binding = "MY_KV"
id = "xxx"

# D1 binding
[[d1_databases]]
binding = "DB"
database_name = "my-db"
database_id = "xxx"

# R2 binding
[[r2_buckets]]
binding = "BUCKET"
bucket_name = "my-bucket"

# Environment variables
[vars]
API_URL = "https://api.example.com"

# Secrets (set via `wrangler secret put`)
# Referenced as env.SECRET_NAME in worker code

Static assets (for frameworks like Next.js):

name = "my-site"
main = ".open-next/worker.js"
compatibility_date = "2024-12-30"
compatibility_flags = ["nodejs_compat"]

[assets]
directory = ".open-next/assets"
binding = "ASSETS"

Common Patterns

Deploy with environment

wrangler deploy -e production
wrangler deploy -e staging

Custom domain (via dashboard or API)

Custom domains must be configured in the Cloudflare dashboard under Worker Settings > Domains & Routes, or via the Cloudflare API. Wrangler doesn't directly manage custom domains.

Local development with bindings

# Creates local D1/KV/R2 for dev
wrangler dev --local

Checking deployment status

wrangler deployments list
wrangler deployments view

Pages (Static Sites)

Deploy via Wrangler CLI

# IMPORTANT: wrangler pages deploy requires BOTH env vars
export CLOUDFLARE_API_TOKEN=$(jq -r '.cloudflare.apiToken' ~/.openclaw/secrets.json)
export CLOUDFLARE_ACCOUNT_ID=b4c7ead049e93e5c5d1c4f4415864c8a

npx wrangler pages deploy dist --project-name=my-project

⚠️ --account-id flag does NOT exist for wrangler pages deploy — you must use the CLOUDFLARE_ACCOUNT_ID env var. The --project-name flag is enough alongside env vars.

Create Pages project via API

TOKEN=$(jq -r '.cloudflare.apiToken' ~/.openclaw/secrets.json)
curl -s -X POST "https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/pages/projects" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name":"my-project","production_branch":"main"}'

Add custom domain to Pages project

curl -s -X POST "https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/pages/projects/my-project/domains" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name":"example.com"}'

Set production deployment

curl -s -X PATCH "https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/pages/projects/my-project" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"production_deployment": "<deploy-id>"}'

DNS for custom domain

  • Root domain must be a CNAME pointing to <project>.pages.dev with proxied: true
  • If the zone is already on Cloudflare, Pages auto-validates ownership via HTTP
  • Common gotcha: stale NS records from old registrar (e.g. GoDaddy) may appear in zone but don't affect routing — they can be safely deleted
  • Check actual nameservers with dig NS example.com +short — should show *.ns.cloudflare.com

Pages API — Direct Upload (without wrangler)

If wrangler auth fails (e.g. zone-scoped token), use multipart form upload directly:

import hashlib, json, mimetypes, requests
from pathlib import Path

TOKEN = "..."
ACCOUNT_ID = "..."
PROJECT = "my-project"
DIST = Path("./dist")

headers = {"Authorization": f"Bearer {TOKEN}"}
files_list = sorted([f for f in DIST.rglob("*") if f.is_file()])

manifest = {}
file_map = {}
for f in files_list:
    rel = "/" + str(f.relative_to(DIST))
    content = f.read_bytes()
    h = hashlib.sha256(content).hexdigest()
    manifest[rel] = h
    file_map[h] = (f, content)

# Part names = file SHA256 hashes; manifest is a separate JSON part
multipart = [("manifest", (None, json.dumps(manifest), "application/json"))]
for h, (f, content) in file_map.items():
    mime = mimetypes.guess_type(str(f))[0] or "application/octet-stream"
    multipart.append((h, (f.name, content, mime)))

resp = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{ACCOUNT_ID}/pages/projects/{PROJECT}/deployments",
    headers=headers,
    files=multipart,
)
print(resp.json()["result"]["url"])

What Wrangler Does NOT Do

  • DNS management — Use the Cloudflare dashboard or API for DNS records
  • Custom domains — Configure via dashboard (Worker Settings > Domains & Routes) or API
  • SSL certificates — Managed automatically by Cloudflare when custom domains are added
  • Firewall/WAF rules — Use dashboard or API

For DNS/domain management, see the cloudflare skill (uses Cloudflare API directly).

Troubleshooting

Issue Solution
"Not authenticated" Run wrangler login
Node version error Requires Node.js v20+
"No config found" Ensure config file exists (wrangler.toml or wrangler.jsonc) or use -c path/to/config
Config changes ignored Check for wrangler.json/wrangler.jsonc — JSON takes precedence over TOML
Binding not found Check wrangler.toml bindings match code references

Resources

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