Cloudflare Computer now helps agents recover from interruptions and wait for approval

@cloudflare/computer gives your agent a workspace to run code in. From v0.7.0, that code can resume after a deploy or crash, and pause on an external action, for example to approve a tool call.

Resume interrupted runs

Set onInterrupt: "replay" on WorkerJavaScriptBackend, or on a single run.

import { DurableObject } from "cloudflare:workers"; import { Workspace } from "@cloudflare/computer"; import { WorkerJavaScriptBackend } from "@cloudflare/computer/backends/worker-javascript"; export class MyAgent extends DurableObject { workspace = new Workspace({ storage: this.ctx.storage, backends: [ new WorkerJavaScriptBackend({ loader: this.env.LOADER, onInterrupt: "replay", }), ], }); }

import { DurableObject } from "cloudflare:workers"; import { Workspace } from "@cloudflare/computer"; import { WorkerJavaScriptBackend } from "@cloudflare/computer/backends/worker-javascript"; export class MyAgent extends DurableObject<Env> { workspace = new Workspace({ storage: this.ctx.storage, backends: [ new WorkerJavaScriptBackend({ loader: this.env.LOADER, onInterrupt: "replay", }), ], }); }

When recovery is triggered, the JavaScript runs again from the beginning, reusing recorded results for completed calls without printing previously recorded output again. If a call's result was not recorded before the interruption, recovery may repeat the call — even if its action already succeeded. For retry handling, including unsafeToRepeat() for operations that cannot safely repeat, refer to Calls that must not run twice.

Recovery starts on the next call to workspace.runtime. To recover without waiting for traffic, call workspace.runtime.recover() from a Durable Object alarm.

Wait for approvals

Expose your application functions through custom modules. A function can call ctx.interrupt() to pause the run until your application supplies an approval decision.

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