Build, debug, or review Cloudflare Workers called by the Forward action in Gateway HTTP policies. The skill guides the `GatewayMiddleware` entry point, Gateway context, request continuation, and response handling within the documented limits.
Build, debug, or review Cloudflare Workers invoked by the Forward action in Gateway HTTP policies, including the GatewayMiddleware entrypoint, Gateway types, context, and continuation.
Run score Not tested
See how to installReview the instructions the agent will receive before you install.
Read the current Forward guide before implementing a Worker. It defines how Gateway invokes Workers on permitted HTTP traffic. Retrieve the relevant page below rather than copying setup, API payloads, or limits into the project from memory.
GatewayMiddleware class extending WorkerEntrypoint from cloudflare:workers. Implement handle(request, context, next) and return a Response. Gateway calls this method through RPC. A default fetch() handler alone does not implement the Forward contract.this.ctx (Workers execution context) and this.env (bindings).next(request) at most once, or return a synthetic response without calling it. next() always targets the original destination. Changes to the destination URL or host are ignored, and it cannot redirect, retry, or fan out. Use fetch() to send a request to a different destination. It creates an independent subrequest that does not inherit the user's Gateway policies or egress configuration.Use the published types and context reference for field names and availability. Treat a falsy identity (!identity) as anonymous and guard optional posture values. Call await context.identity() or await context.devicePosture() only when needed. Both getters can reject. Catch lookup failures separately from missing values and decide how to handle each when the Worker depends on them. Use Gateway-provided identity rather than client-supplied identity headers.
Type-check against the installed Gateway types and test the named RPC entrypoint, including zero or one continuation call and the context values the Worker uses. Then test a permitted request through a scoped Gateway Forward policy. A direct request to a default fetch() handler does not validate the Gateway path. Follow the chosen template's test procedure and the Forward guide's troubleshooting steps.
Check the response and streaming rules: return a final status from 200 to 599, return no body for HEAD requests or statuses 204, 205, and 304, and stream bodies rather than buffering them.
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