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feat: add assistant info block to system prompt #6350

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feat: add assistant info block to system prompt #6350

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2 changes: 2 additions & 0 deletions packages/opencode/src/session/llm.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -47,8 +47,10 @@ export namespace LLM {
const [language, cfg] = await Promise.all([Provider.getLanguage(input.model), Config.get()])

const system = SystemPrompt.header(input.model.providerID)
const assistantInfo = await SystemPrompt.assistantInfo(input.model)
system.push(
[
assistantInfo,
// use agent prompt otherwise provider prompt
...(input.agent.prompt ? [input.agent.prompt] : SystemPrompt.provider(input.model)),
// any custom prompt passed into this call
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9 changes: 8 additions & 1 deletion packages/opencode/src/session/system.ts
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Expand Up @@ -2,6 +2,8 @@ import { Ripgrep } from "../file/ripgrep"
import { Global } from "../global"
import { Filesystem } from "../util/filesystem"
import { Config } from "../config/config"
import { Installation } from "../installation"
import { Provider } from "../provider/provider"

import { Instance } from "../project/instance"
import path from "path"
Expand All @@ -14,14 +16,19 @@ import PROMPT_GEMINI from "./prompt/gemini.txt"
import PROMPT_ANTHROPIC_SPOOF from "./prompt/anthropic_spoof.txt"

import PROMPT_CODEX from "./prompt/codex.txt"
import type { Provider } from "@/provider/provider"

export namespace SystemPrompt {
export function header(providerID: string) {
if (providerID.includes("anthropic")) return [PROMPT_ANTHROPIC_SPOOF.trim()]
return []
}

export async function assistantInfo(model?: Provider.Model) {
if (!model) return `You are running in OpenCode v${Installation.VERSION}, the best coding agent on the planet.`
const provider = await Provider.getProvider(model.providerID)
return `You are ${model.name} (${provider.name}: ${model.id}) running in OpenCode v${Installation.VERSION}, the best coding agent on the planet.`
}

export function provider(model: Provider.Model) {
if (model.api.id.includes("gpt-5")) return [PROMPT_CODEX]
if (model.api.id.includes("gpt-") || model.api.id.includes("o1") || model.api.id.includes("o3"))
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