v1.0.17-preview.4

Feature: sub-agent lifecycle hooks

Register OnSubagentStart and OnSubagentStop hooks on the parent session. Start hooks can prepend context to a sub-agent's first prompt. Stop hooks can inspect the response, replace it, or block the stop with a follow-up instruction. (6b4f3a3)

Hooks = new SessionHooks { OnSubagentStart = (input, inv) =>
    Task.FromResult<SubagentStartHookOutput?>(new() { AdditionalContext = "Read the file first." }) }

Hooks: &copilot.SessionHooks{OnSubagentStart: func(in copilot.SubagentStartHookInput, inv copilot.HookInvocation) (*copilot.SubagentStartHookOutput, error) {
    return &copilot.SubagentStartHookOutput{AdditionalContext: "Read the file first."}, nil }}

Feature: binary session filesystem providers

A session filesystem provider can now serve exact file bytes, so the view tool can read provider-only images. Implement the binary provider interface and set Capabilities.Binary. Reads and writes are capped at about 48 MiB. (6b4f3a3)

• C#: implement ISessionFsBinaryProvider (ReadFileBytesAsync, WriteFileBytesAsync)
• Go: implement SessionFSBinaryProvider (ReadFileBytes, WriteFileBytes)

Other changes

• improvement: update the bundled Copilot CLI to 1.0.92-4 and regenerate RPC and session event types across all SDKs (6b4f3a3)
• feature: new session events tool.shell_output and human_response.recorded, plus file-edit details on tool.execution_complete (6b4f3a3)
• feature: new customization reload RPC result types and model discovery types (6b4f3a3)

Warning

Firewall blocked 1 domain

The following domain was blocked by the firewall during workflow execution:

• github.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "github.com"

See Network Configuration for more information.

Generated by Release Notes Generator · copilot · auto · 33.3 AIC · ⌖ 6.48 AIC · ⊞ 10.4K