Pipelines, Workers - Pipeline binding configuration field renamed to stream

Summary

The field name inside the pipelines binding block in your Wrangler config has been renamed from pipeline to stream. The old pipeline field is deprecated but still accepted; update your config to stream to avoid deprecation warnings.

Key Points

• Replace pipeline with stream in wrangler.jsonc / wrangler.toml pipeline bindings.
• No other changes required: binding names, TypeScript types, and runtime API remain the same (e.g. env.MY_PIPELINE.send(...)).
• The old pipeline field continues to be accepted temporarily but will produce a deprecation warning.

Example

Before (deprecated):

{
  "$schema": "./node_modules/wrangler/config-schema.json",
  "pipelines": [
    { "binding": "MY_PIPELINE", "pipeline": "<STREAM_ID>" }
  ]
}

[[pipelines]]
binding = "MY_PIPELINE"
pipeline = "<STREAM_ID>"

After (update to avoid warning):

{
  "$schema": "./node_modules/wrangler/config-schema.json",
  "pipelines": [
    { "binding": "MY_PIPELINE", "stream": "<STREAM_ID>" }
  ]
}

[[pipelines]]
binding = "MY_PIPELINE"
stream = "<STREAM_ID>"

For more information, see the documentation on writing to streams.