Bindings

Resources on env. Declare them with the bindings object, the services array, and assets / images / version_metadata.

{
  "name": "app",
  "main": "src/index.ts",
  "vars": { "LOG_LEVEL": "info" },
  "secrets": { "TOKEN": { "env": "MY_TOKEN" } },
  "bindings": {
    "KV": { "type": "kv_namespace", "id": "<kv-id>" },
    "BUCKET": { "type": "r2_bucket", "id": "<r2-id>" },
    "DB": { "type": "d1_database", "id": "<d1-id>" },
    "COUNTER": { "type": "do_namespace", "id": "<do-id>", "className": "Counter" },
    "JOBS": { "type": "queue_producer", "id": "<queue-id>" },
    "FLOW": { "type": "workflow", "id": "<workflow-id>", "className": "MyWorkflow" }
  },
  "services": [
    { "binding": "AUTH", "service": "auth-worker", "entrypoint": "AuthEntrypoint" }
  ],
  "images": { "binding": "IMAGES" },
  "version_metadata": { "binding": "VERSION", "tag": "release-1" }
}

permissions is optional { "read": true, "write": false }. Durable Object and Workflow bindings must provide className: it is only used to check class semantics in generated framework config, and is not sent to the platform as a resource ID. Workflows may set a schedules string array.

Regenerate types after changing config:

bun run oc types --config open-compute.json

Runtime detail: Runtime APIs · bindings.

Compatibility

Topic	Cloudflare	open-compute
Tenants only see declared names	Yes	Yes
Worker-side APIs for KV / R2 / D1 / DO / Queue / Workflow / Service / Assets / Images / Version Metadata	Yes — Cloudflare bindings	Same symbols
Config shape	Wrangler per-product top-level arrays (kv_namespaces, …)	bindings object with {type, id, permissions?}
Service Bindings	Same-account Workers	services: [{binding, service, entrypoint?}]; deploy time resolves the same-account Worker name and freezes a target ID; same-platform only
Workers AI, Vectorize, Hyperdrive, mTLS, Rate Limiting, Secrets Store, Analytics Engine, Browser Rendering	Yes	Not provided
Writing config creates the resource	Wrangler can create some resources	The resource must already exist on the platform