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Bump GitHub.Copilot.SDK from 0.1.26 to 0.2.0#3

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Bump GitHub.Copilot.SDK from 0.1.26 to 0.2.0#3
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@dependabot dependabot bot commented on behalf of github Mar 22, 2026

Updated GitHub.Copilot.SDK from 0.1.26 to 0.2.0.

Release notes

Sourced from GitHub.Copilot.SDK's releases.

0.2.0

This is a big update with a broad round of API refinements, new capabilities, and cross-SDK consistency improvements that have shipped incrementally through preview releases since v0.1.32.

Highlights

Fine-grained system prompt customization

A new "customize" mode for systemMessage lets you surgically edit individual sections of the Copilot system prompt — without replacing the entire thing. Ten sections are configurable: identity, tone, tool_efficiency, environment_context, code_change_rules, guidelines, safety, tool_instructions, custom_instructions, and last_instructions.

Each section supports four static actions (replace, remove, append, prepend) and a transform callback that receives the current rendered content and returns modified text — useful for regex mutations, conditional edits, or logging what the prompt contains. (#​816)

const session = await client.createSession({
  onPermissionRequest: approveAll,
  systemMessage: {
    mode: "customize",
    sections: {
      identity: {
        action: (current) => current.replace("GitHub Copilot", "Acme Assistant"),
      },
      tone: { action: "replace", content: "Be concise and professional." },
      code_change_rules: { action: "remove" },
    },
  },
});
var session = await client.CreateSessionAsync(new SessionConfig {
    OnPermissionRequest = PermissionHandler.ApproveAll,
    SystemMessage = new SystemMessageConfig {
        Mode = SystemMessageMode.Customize,
        Sections = new Dictionary<string, SectionOverride> {
            ["identity"] = new() {
                Transform = current => Task.FromResult(current.Replace("GitHub Copilot", "Acme Assistant")),
            },
            ["tone"] = new() { Action = SectionOverrideAction.Replace, Content = "Be concise and professional." },
            ["code_change_rules"] = new() { Action = SectionOverrideAction.Remove },
        },
    },
});

OpenTelemetry support across all SDKs

All four SDK languages now support distributed tracing with the Copilot CLI. Set telemetry in your client options to configure an OTLP exporter; W3C trace context is automatically propagated on session.create, session.resume, and session.send, and restored in tool handlers so tool execution is linked to the originating trace. (#​785)

const client = new CopilotClient({
  telemetry: {
    otlpEndpoint: "http://localhost:4318",
 ... (truncated)

## 0.1.33-preview.4

### Feature: fine-grained system prompt customization

A new `"customize"` mode for `systemMessage` lets you selectively override individual sections of the Copilot system prompt — without replacing the entire prompt. This sits between `"append"` (add to the end) and `"replace"` (replace everything). ([#​816](https://github.com/github/copilot-sdk/pull/816))

Ten sections are configurable: `identity`, `tone`, `tool_efficiency`, `environment_context`, `code_change_rules`, `guidelines`, `safety`, `tool_instructions`, `custom_instructions`, and `last_instructions`.

Each section supports four static actions (`replace`, `remove`, `append`, `prepend`) and a `transform` action — a callback that receives the current rendered section content and returns the modified version, enabling regex mutations, logging, or conditional edits.

```ts
const session = await client.createSession({
  systemMessage: {
    mode: "customize",
    sections: {
      identity: {
        // transform: read current content and return modified content
        action: (current) => current.replace("GitHub Copilot", "Acme Assistant"),
      },
      tone: { action: "replace", content: "Be concise and professional." },
      code_change_rules: { action: "remove" },
    },
  },
});
var session = await client.CreateSessionAsync(new SessionOptions {
    SystemMessage = new SystemMessageOptions {
        Mode = SystemMessageMode.Customize,
        Sections = new Dictionary(string, SectionOverride) {
            ["identity"] = new() {
                Transform = current => current.Replace("GitHub Copilot", "Acme Assistant"),
            },
            ["tone"] = new() { Action = "replace", Content = "Be concise and professional." },
            ["code_change_rules"] = new() { Action = "remove" },
        },
    },
});

Generated by Release Changelog Generator

Generated by Release Changelog Generator

0.1.33-preview.3

Feature: OpenTelemetry support across all SDKs

All four SDK languages now support distributed tracing with the Copilot CLI. Set telemetry in your client options to configure an OTLP exporter; W3C trace context is then propagated on session.create, session.resume, and session.send, and restored in tool handlers so tool execution is linked to the originating trace. (#​785)

const client = new CopilotClient({
  telemetry: {
    otlpEndpoint: "(localhost/redacted)
    sourceName: "my-app",
  },
});
var client = new CopilotClient(new CopilotClientOptions {
    Telemetry = new TelemetryConfig {
        OtlpEndpoint = "(localhost/redacted)
        SourceName = "my-app",
    },
});

Feature: blob attachment type for inline base64 data

A new blob attachment type lets you send images or other binary content directly to a session without writing to disk first — useful when data is already in memory (screenshots, API responses, generated images). (#​731)

await session.send("What's in this image?", {
  attachments: [{ type: "blob", data: base64Str, mimeType: "image/png" }],
});
await session.SendAsync("What's in this image?", new MessageOptions {
    Attachments = [new BlobAttachment { Data = base64Str, MimeType = "image/png" }],
});

Feature: Node.js CommonJS (CJS) compatibility

The Node.js SDK now ships both ESM and CJS builds, fixing crashes in VS Code extensions and other tools bundled with esbuild's format: "cjs". No changes needed in consumer code — Node automatically selects the right format. (#​546)

Feature: reasoningEffort when switching models

All SDKs now accept an optional reasoningEffort parameter in setModel() for models that support it. (#​712)

await session.setModel("claude-sonnet-4.6", { reasoningEffort: "high" });

... (truncated)

0.1.33-preview.0

Feature: pre-select a custom agent at session creation

You can now specify which custom agent should be active when a session starts, without needing a separate session.rpc.agent.select() call. (#​722)

const session = await client.createSession({
  customAgents: [
    { name: "researcher", prompt: "You are a research assistant." },
    { name: "editor", prompt: "You are a code editor." },
  ],
  agent: "researcher",  // active agent at session start
  onPermissionRequest: approveAll,
});
var session = await client.CreateSessionAsync(new SessionConfig {
    CustomAgents = [
        new CustomAgentConfig { Name = "researcher", Prompt = "You are a research assistant." },
        new CustomAgentConfig { Name = "editor", Prompt = "You are a code editor." },
    ],
    Agent = "researcher",  // active agent at session start
});

Feature: custom model listing for BYOK

Applications using bring-your-own-key providers can now supply onListModels in client options to override client.listModels() with their own model list, instead of forwarding the call to the CLI. (#​730)

const client = new CopilotClient({ onListModels: () => myProviderModels });
var client = new CopilotClient(new CopilotClientOptions {
    OnListModels = () => Task.FromResult(myProviderModels)
});
  • Python: on_list_models=lambda: my_provider_models
  • Go: OnListModels: func(ctx context.Context) ([]copilot.ModelInfo, error) { return myModels, nil }

Feature: new events and APIs (system notifications, session log, extension support)

Updated to match the latest CLI runtime, adding: system.notification events, a session log RPC API, reasoningEffort changes after model switch, alreadyInUse flag on sessions, and the groundwork for extension-based integrations. (#​737)

Other changes

  • feature: add no-result permission outcome so extensions can attach to sessions without actively answering permission requests (#​802)
  • bugfix: fix race condition where events emitted during session creation (e.g. session.start) could be dropped; also adds OnEvent catch-all handler to SessionConfig (#​664)
    ... (truncated)

0.1.32

Feature: backward compatibility with v2 CLI servers

SDK applications written against the v3 API now also work when connected to a v2 CLI server, with no code changes required.

Generated by Release Changelog Generator

Generated by Release Changelog Generator

0.1.31

Feature: strongly-typed PermissionRequestResultKind for .NET and Go

Rather than comparing result.Kind against undiscoverable magic strings like "approved" or "denied-interactively-by-user", .NET and Go now provide typed constants. Node and Python already had typed unions for this; this brings full parity. (#​631)

session.OnPermissionCompleted += (e) => {
    if (e.Result.Kind == PermissionRequestResultKind.Approved) { /* ... */ }
    if (e.Result.Kind == PermissionRequestResultKind.DeniedInteractivelyByUser) { /* ... */ }
};
// Go: PermissionKindApproved, PermissionKindDeniedByRules,
//     PermissionKindDeniedCouldNotRequestFromUser, PermissionKindDeniedInteractivelyByUser
if result.Kind == copilot.PermissionKindApproved { /* ... */ }

Other changes

  • feature: [Python] [Go] add get_last_session_id() / GetLastSessionID() for SDK-wide parity (was already available in Node and .NET) (#​671)
  • improvement: [Python] add timeout parameter to generated RPC methods, allowing callers to override the default 30s timeout for long-running operations (#​681)
  • bugfix: [Go] PermissionRequest fields are now properly typed (ToolName, Diff, Path, etc.) instead of a generic Extra map[string]any catch-all (#​685)

Generated by Release Changelog Generator

0.1.30

Feature: support overriding built-in tools

Applications can now override built-in tools such as grep, edit_file, or read_file. To do this, register a custom tool with the same name and set the override flag. Without the flag, the runtime will return an error if the name clashes with a built-in. (#​636)

import { defineTool } from "`@​github/copilot-sdk`";

const session = await client.createSession({
  tools: [defineTool("grep", {
    overridesBuiltInTool: true,
    handler: async (params) => `CUSTOM_GREP_RESULT: \$\{params.query}`,
  })],
  onPermissionRequest: approveAll,
});
var grep = AIFunctionFactory.Create(
    ([Description("Search query")] string query) => $"CUSTOM_GREP_RESULT: {query}",
    "grep",
    "Custom grep implementation",
    new AIFunctionFactoryOptions
    {
        AdditionalProperties = new ReadOnlyDictionary(string, object?)(
            new Dictionary(string, object?) { ["is_override"] = true })
    });

Feature: simpler API for changing model mid-session

While session.rpc.model.switchTo() already worked, there is now a convenience method directly on the session object. (#​621)

  • TypeScript: await session.setModel("gpt-4.1")
  • C#: await session.SetModelAsync("gpt-4.1")
  • Python: await session.set_model("gpt-4.1")
  • Go: err := session.SetModel(ctx, "gpt-4.1")

Other changes

  • improvement: [C#] use event delegate for thread-safe, insertion-ordered event handler dispatch (#​624)
  • improvement: [C#] deduplicate OnDisposeCall and improve implementation (#​626)
  • improvement: [C#] remove unnecessary SemaphoreSlim locks for handler fields (#​625)
  • bugfix: [Python] correct PermissionHandler.approve_all type annotations (#​618)

New contributors

  • @​giulio-leone made their first contribution in #​618

Generated by Release Changelog Generator

... (truncated)

0.1.29

v0.1.29 (2026-02-27)

Changes

  • bugfix: [Python] CopilotClient.stop() now raises an ExceptionGroup instead of silently returning a list of exceptions (#​603)

Generated by Release Changelog Generator

0.1.28

What's Changed

New Contributors

Full Changelog: github/copilot-sdk@v0.1.25...v0.1.28

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@dependabot
Bump GitHub.Copilot.SDK from 0.1.26 to 0.2.0
07c5acb 
---
updated-dependencies:
- dependency-name: GitHub.Copilot.SDK
  dependency-version: 0.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot added .NET Pull requests that update .NET code dependencies Pull requests that update a dependency file labels Mar 22, 2026
@dependabot dependabot bot mentioned this pull request Mar 22, 2026
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