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feat(opencode): expose running version, provider and model in the env block #51911

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feat(opencode): expose running version, provider and model in the env…
PascalBourdier Sep 28, 2026
9ef6c71
test(opencode): cover the environment system prompt block
PascalBourdier Sep 28, 2026
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6 changes: 5 additions & 1 deletion packages/opencode/src/session/system.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ import { LocationServiceMap, locationServiceMapLayer } from "@opencode-ai/core/l
import { Reference } from "@opencode-ai/core/reference"
import { MCP } from "@/mcp"
import { PermissionV1 } from "@opencode-ai/core/v1/permission"
import { InstallationVersion } from "@opencode-ai/core/installation/version"

export function provider(model: Provider.Model) {
if (model.api.id.includes("muse")) {
Expand Down Expand Up @@ -73,14 +74,17 @@ const layer = Layer.effect(
}).pipe(Effect.provide(locations.get(Location.Ref.make({ directory: AbsolutePath.make(ctx.directory) }))))
return [
[
`You are powered by the model named ${model.api.id}. The exact model ID is ${model.providerID}/${model.api.id}`,
`You are powered by the model named ${model.name}. The exact model ID is ${model.providerID}/${model.api.id}`,
`Here is some useful information about the environment you are running in:`,
`<env>`,
` Working directory: ${ctx.directory}`,
` Workspace root folder: ${ctx.worktree}`,
` Is directory a git repo: ${ctx.project.vcs === "git" ? "yes" : "no"}`,
` Platform: ${process.platform}`,
` Today's date: ${new Date().toDateString()}`,
` OpenCode version: ${InstallationVersion}`,
` Provider: ${model.providerID}`,
` Model: ${model.name} (${model.api.id})`,
`</env>`,
].join("\n"),
references.length === 0
Expand Down
20 changes: 20 additions & 0 deletions packages/opencode/test/session/system.test.ts
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Expand Up @@ -7,6 +7,7 @@ import { Skill } from "../../src/skill"
import { Permission } from "../../src/permission"
import type { Provider } from "../../src/provider/provider"
import { SystemPrompt } from "../../src/session/system"
import { InstallationVersion } from "@opencode-ai/core/installation/version"
import { MCP } from "../../src/mcp"
import { testEffect } from "../lib/effect"

Expand Down Expand Up @@ -109,6 +110,25 @@ describe("session.system", () => {
}
})

it.instance("environment exposes version, provider and model", () =>
Effect.gen(function* () {
const prompt = yield* SystemPrompt.Service
const model = {
name: "Test Model",
providerID: "test-provider",
api: { id: "test-model-id" },
} as unknown as Provider.Model
const parts = yield* prompt.environment(model)
const block = parts.join("\n")

expect(block).toContain(`OpenCode version: ${InstallationVersion}`)
expect(block).toContain("Provider: test-provider")
expect(block).toContain("Model: Test Model (test-model-id)")
expect(block).toContain("You are powered by the model named Test Model.")
expect(block).toContain("The exact model ID is test-provider/test-model-id")
}),
)

it.effect("skills output is sorted by name and stable across calls", () =>
Effect.gen(function* () {
const prompt = yield* SystemPrompt.Service
Expand Down
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