feat: custom starter message configuration

lib/shared/src/configuration.ts

@@ -10,6 +10,7 @@ export interface Configuration {
     telemetryLevel: 'all' | 'off'
     useContext: ConfigurationUseContext
     customHeaders: Record<string, string>
+    chatPreInstruction: string
     autocomplete: boolean
     experimentalChatPredictions: boolean
     inlineChat: boolean

vscode/CHANGELOG.md

@@ -11,6 +11,7 @@ Starting from `0.2.0`, Cody is using `major.EVEN_NUMBER.patch` for release versi
 - Add a UI indicator when you're not signed in. [pull/970](https://github.com/sourcegraph/cody/pull/970)
 - Added a completion statistics summary to the autocomplete trace view. [pull/973](https://github.com/sourcegraph/cody/pull/973)
 - Add experimental option `claude-instant-infill` to the `cody.autocomplete.advanced.model` config option that enables users using the Claude Instant model to get suggestions with context awareness (infill). [pull/974](https://github.com/sourcegraph/cody/pull/974)
+- New `cody.chat.preInstruction` configuration option for adding custom message at the start of all chat messages sent to Cody. Extension reload required. [pull/963](https://github.com/sourcegraph/cody/pull/963)
 
 ### Fixed
 

vscode/package.json

@@ -811,6 +811,14 @@
           "default": false,
           "markdownDescription": "Experimental feature for internal use."
         },
+        "cody.chat.preInstruction": {
+          "order": 10,
+          "type": "string",
+          "markdownDescription": "An instruction to be included at the start of all chat messages sent to Cody. Extension reload required.",
+          "examples": [
+            "Answer all my questions in Spanish."
+          ]
+        },
         "cody.experimental.symf.path": {
           "order": 99,
           "type": "string",

vscode/src/configuration.test.ts

@@ -14,6 +14,7 @@ describe('getConfiguration', () => {
             serverEndpoint: DOTCOM_URL.href,
             codebase: '',
             customHeaders: {},
+            chatPreInstruction: undefined,
             useContext: 'embeddings',
             autocomplete: true,
             experimentalCommandLenses: false,
@@ -84,6 +85,8 @@ describe('getConfiguration', () => {
                         return /.*/
                     case 'cody.telemetry.level':
                         return 'off'
+                    case 'cody.chat.preInstruction':
+                        return 'My name is Jeff.'
                     case 'cody.autocomplete.advanced.provider':
                         return 'unstable-codegen'
                     case 'cody.autocomplete.advanced.serverEndpoint':
@@ -115,6 +118,7 @@ describe('getConfiguration', () => {
                 'Cache-Control': 'no-cache',
                 'Proxy-Authenticate': 'Basic',
             },
+            chatPreInstruction: 'My name is Jeff.',
             autocomplete: false,
             experimentalChatPredictions: true,
             experimentalCommandLenses: true,

vscode/src/configuration.ts

@@ -50,6 +50,7 @@ export function getConfiguration(config: ConfigGetter = vscode.workspace.getConf
         autocomplete: config.get(CONFIG_KEY.autocompleteEnabled, true),
         experimentalChatPredictions: config.get(CONFIG_KEY.experimentalChatPredictions, isTesting),
         inlineChat: config.get(CONFIG_KEY.inlineChatEnabled, true),
+        chatPreInstruction: config.get(CONFIG_KEY.chatPreInstruction),
         experimentalGuardrails: config.get(CONFIG_KEY.experimentalGuardrails, isTesting),
         experimentalNonStop: config.get(CONFIG_KEY.experimentalNonStop, isTesting),
         experimentalLocalSymbols: config.get(CONFIG_KEY.experimentalLocalSymbols, false),

vscode/src/main.ts

@@ -3,6 +3,7 @@ import * as vscode from 'vscode'
 import { commandRegex } from '@sourcegraph/cody-shared/src/chat/recipes/helpers'
 import { RecipeID } from '@sourcegraph/cody-shared/src/chat/recipes/recipe'
 import { ConfigurationWithAccessToken } from '@sourcegraph/cody-shared/src/configuration'
+import { newPromptMixin, PromptMixin } from '@sourcegraph/cody-shared/src/prompt/prompt-mixin'
 
 import { ChatViewProvider } from './chat/ChatViewProvider'
 import { ContextProvider } from './chat/ContextProvider'
@@ -94,6 +95,10 @@ const register = async (
     const workspaceConfig = vscode.workspace.getConfiguration()
     const config = getConfiguration(workspaceConfig)
 
+    if (config.chatPreInstruction) {
+        PromptMixin.addCustom(newPromptMixin(config.chatPreInstruction))
+    }
+
     if (config.autocompleteExperimentalSyntacticPostProcessing) {
         parseAllVisibleDocuments()