Copilot SDK v0.1.33-preview.4: Fine-Grained Prompts
Copilot SDK now lets you customize individual system prompt sections without replacing the entire prompt. Use transform callbacks for dynamic mutations.
changelog
Product changelogs and update logs
Copilot SDK Go v0.2.0: Dependency Updates
Copilot SDK Go v0.2.0 bumps @github/copilot to 1.0.10 and refreshes dependencies. Maintenance release with code regeneration.
Copilot SDK v0.2.0: Fine-Grained Prompts & OpenTelemetry
Copilot SDK v0.2.0 ships fine-grained system prompt customization, OpenTelemetry tracing across all SDKs, blob attachments, and significant Python API overhaul. Breaking changes in Python and Go.
Copilot SDK v0.2.1-preview.0: Commands & Blob Attachments
Node.js gets commands and UI prompts, all SDKs gain custom model listing, and blob attachments let you send images without disk writes. Go has breaking enum and struct naming changes.
Copilot SDK v0.2.1-preview.1: Ephemeral Events Fix
Copilot SDK v0.2.1-preview.1 makes ephemeral events truly ephemeral—no longer returned by getMessages(). Use live listeners instead. Breaking change for session idle detection.
Copilot SDK v0.2.1-preview.2: Elicitation & Metadata
Copilot SDK v0.2.1-preview.2 adds elicitation request handling for Node, cross-SDK session metadata lookups, and Python async context managers. Fixes tool result serialization bugs.
Copilot Chat v0.43.2026040301: MCP & Claude 4.6
MCP Insiders mode now configurable, Claude 4.6 gets optimized prompts by default, plus session tracking improvements and API updates.