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move spoof prompt to support anthropic with custom modes #1031

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Merged
thdxr merged 1 commit into from
Jul 16, 2025
Merged

move spoof prompt to support anthropic with custom modes #1031

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4 changes: 3 additions & 1 deletion packages/opencode/src/session/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ import {

import PROMPT_INITIALIZE from "../session/prompt/initialize.txt"
import PROMPT_PLAN from "../session/prompt/plan.txt"
import PROMPT_ANTHROPIC_SPOOF from "../session/prompt/anthropic_spoof.txt"

import { App } from "../app/app"
import { Bus } from "../bus"
Expand Down Expand Up @@ -546,7 +547,8 @@ export namespace Session {
msgs.push({ info: userMsg, parts: userParts })

const mode = await Mode.get(input.mode ?? "build")
let system = mode.prompt ? [mode.prompt] : SystemPrompt.provider(input.providerID, input.modelID)
let system = input.providerID === "anthropic" ? [PROMPT_ANTHROPIC_SPOOF.trim()] : []
system.push(...(mode.prompt ? [mode.prompt] : SystemPrompt.provider(input.modelID)))
system.push(...(await SystemPrompt.environment()))
system.push(...(await SystemPrompt.custom()))
// max 2 system prompt messages for caching purposes
Expand Down
3 changes: 1 addition & 2 deletions packages/opencode/src/session/system.ts
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Expand Up @@ -13,8 +13,7 @@ import PROMPT_SUMMARIZE from "./prompt/summarize.txt"
import PROMPT_TITLE from "./prompt/title.txt"

export namespace SystemPrompt {
export function provider(providerID: string, modelID: string) {
if (providerID === "anthropic") return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_ANTHROPIC]
export function provider(modelID: string) {
if (modelID.includes("gpt-") || modelID.includes("o1") || modelID.includes("o3")) return [PROMPT_BEAST]
return [PROMPT_ANTHROPIC]
}
Expand Down