Pick any line to see why it is the way it is: the commit, the pull request and issue it came from, and what the agent was thinking.
| Every agent can have its own computer. A session that needs one wakes it: a home of its own on g1t cloud, one per agent and never shared, where it runs commands, reads and writes files and keeps what it made, with each session working in its own folder under a shared home; after ten idle minutes it sleeps, its home kept as a snapshot and restored when it wakes, and Reset wipes the home while memory and artifacts stay. Its shell and files are abilities with the usual choices, Alone, Alone when asked, Ask first or Never, offered only inside sessions and never to a chat reply; every command shows on the session with its output, and the agent's new Computer tab shows the state, the disk used of the five gigabytes included, the recent commands, and Wake, Put to sleep and Reset. Machine time counts only while it is awake, on the sandbox lines of the ledger that name the agent and who asked, held to the same spend caps as the session; the disk itself costs nothing in this version. The runner gained a long-lived supervisor that answers the computer's requests inside the container, and the runner service a computer per agent that keeps its snapshot in the agent homes bucket when one is attached, and says so when none is. The REST API and the agent tool can read a computer, wake it, put it to sleep and reset it. The agents, abilities, sessions, runners, billing and deploy guides say how it works and what an operator sets up; pinning a computer to your own runner, its browser and take-over come next. | 1 | /** |
| 2 | * The pure parts of an agent's computer (computer.ts): how a command's | |
| 3 | * streamed lines become one transcript, how its end is said in a session's | |
| 4 | * transcript, and how the container's NDJSON is read. No Workers imports, | |
| 5 | * so Node runs the tests on the file as it is. | |
| 6 | */ | |
| 7 | import type { AgentComputerCommand } from "@g1t/contracts"; | |
| 8 | ||
| 9 | /** How much of one command's output a kept transcript holds: `COMPUTER_TRANSCRIPT_BYTES` (@g1t/contracts runner.ts), which computer.ts passes. */ | |
| 10 | const DEFAULT_TRANSCRIPT_BYTES = 64 * 1024; | |
| 11 | ||
| 12 | /** The object key a computer's saved home is kept under. */ | |
| 13 | export function homeKey(agentId: string): string { | |
| 14 | return `homes/${agentId}.tar.zst`; | |
| 15 | } | |
| 16 | ||
| 17 | /** A command's lines gathered into one transcript, in order, cut at the cap. */ | |
| 18 | export function gather(lines: { stream: string; line: string }[], cap = DEFAULT_TRANSCRIPT_BYTES): { output: string; truncated: boolean } { | |
| 19 | let output = ""; | |
| 20 | let truncated = false; | |
| 21 | for (const entry of lines) { | |
| 22 | const next = output ? `${output}\n${entry.line}` : entry.line; | |
| 23 | if (next.length > cap) { | |
| 24 | truncated = true; | |
| 25 | break; | |
| 26 | } | |
| 27 | output = next; | |
| 28 | } | |
| 29 | return { output, truncated }; | |
| 30 | } | |
| 31 | ||
| 32 | /** `outcome` for a session's transcript: `exit 0 · 1.2 s`, with what went wrong. */ | |
| 33 | export function outcomeLine(command: Pick<AgentComputerCommand, "exit_code" | "duration_ms" | "timed_out" | "truncated">): string { | |
| 34 | const seconds = command.duration_ms / 1000; | |
| 35 | const took = seconds < 10 ? `${seconds.toFixed(1)} s` : seconds < 90 ? `${Math.round(seconds)} s` : `${Math.round(seconds / 60)} min`; | |
| 36 | return [`exit ${command.exit_code}`, took, command.timed_out ? "timed out" : null, command.truncated ? "output cut" : null].filter(Boolean).join(" · "); | |
| 37 | } | |
| 38 | ||
| 39 | /** Byte parts as one array. */ | |
| 40 | export function concat(parts: Uint8Array[], size: number): Uint8Array { | |
| 41 | const out = new Uint8Array(size); | |
| 42 | let at = 0; | |
| 43 | for (const part of parts) { | |
| 44 | out.set(part, at); | |
| 45 | at += part.byteLength; | |
| 46 | } | |
| 47 | return out; | |
| 48 | } | |
| 49 | ||
| 50 | /** The lines of an NDJSON body as they arrive, each parsed; lines that aren't JSON objects are skipped. */ | |
| 51 | export async function* ndjson(body: ReadableStream<Uint8Array>): AsyncGenerator<Record<string, unknown>> { | |
| 52 | const reader = body.getReader(); | |
| 53 | const decoder = new TextDecoder(); | |
| 54 | let buffer = ""; | |
| 55 | const parse = (line: string): Record<string, unknown> | null => { | |
| 56 | if (!line.trim()) return null; | |
| 57 | try { | |
| 58 | const value = JSON.parse(line) as unknown; | |
| 59 | return value && typeof value === "object" && !Array.isArray(value) ? (value as Record<string, unknown>) : null; | |
| 60 | } catch { | |
| 61 | return null; | |
| 62 | } | |
| 63 | }; | |
| 64 | for (;;) { | |
| 65 | const { done, value } = await reader.read(); | |
| 66 | if (done) break; | |
| 67 | buffer += decoder.decode(value, { stream: true }); | |
| 68 | let at: number; | |
| 69 | while ((at = buffer.indexOf("\n")) >= 0) { | |
| 70 | const parsed = parse(buffer.slice(0, at)); | |
| 71 | buffer = buffer.slice(at + 1); | |
| 72 | if (parsed) yield parsed; | |
| 73 | } | |
| 74 | } | |
| 75 | const last = parse(buffer + decoder.decode()); | |
| 76 | if (last) yield last; | |
| 77 | } | |
| 78 | ||
| 79 | /** | |
| 80 | * What a command's streamed lines and closing line become, as kept: the | |
| 81 | * output with the closing note on its last line, or a line saying the | |
| 82 | * computer stopped answering when there was no closing line. | |
| 83 | */ | |
| 84 | export function transcriptOf( | |
| 85 | lines: { stream: string; line: string }[], | |
| 86 | closing: { exit_code?: number; duration_ms?: number; truncated?: boolean; timed_out?: boolean; note?: string } | null, | |
| 87 | problem: string | null, | |
| 88 | cap = DEFAULT_TRANSCRIPT_BYTES, | |
| 89 | ): Pick<AgentComputerCommand, "output" | "truncated" | "timed_out" | "exit_code"> & { duration_ms: number | null } { | |
| 90 | const { output, truncated } = gather(lines, cap); | |
| 91 | const tail = closing ? (closing.note ? `[${closing.note}]` : null) : `[The computer stopped answering${problem ? `: ${problem}` : ""}.]`; | |
| 92 | return { | |
| 93 | output: tail ? `${output}${output ? "\n" : ""}${tail}` : output, | |
| 94 | truncated: truncated || Boolean(closing?.truncated), | |
| 95 | timed_out: Boolean(closing?.timed_out), | |
| 96 | exit_code: typeof closing?.exit_code === "number" ? closing.exit_code : -1, | |
| 97 | duration_ms: typeof closing?.duration_ms === "number" ? closing.duration_ms : null, | |
| 98 | }; | |
| 99 | } |
