v1.0.7

Feature: in-process (FFI) transport

The SDK can now host the Copilot runtime in-process by loading the native runtime library via its C ABI (FFI), eliminating the overhead of spawning a child process. This experimental transport is available for Node.js, Rust, Python, and Go. (#1953, #1915, #1975, #1976)

const client = new CopilotClient({ connection: RuntimeConnection.forInProcess() });

var client = new CopilotClient(new CopilotClientOptions { Connection = RuntimeConnection.ForInProcess() });

Feature: tool search configuration

A new toolSearch session option controls how the SDK defers tools when the total tool count exceeds a threshold. When enabled (the default), excess MCP and external tools are surfaced on demand through the built-in tool_search_tool rather than pre-loaded into every prompt. Tool results can also include toolReferences to link cited sources back to the tool that produced them. (#1933)

const session = await client.createSession({
    toolSearch: { defer: "auto" },
});

var session = await client.CreateSessionAsync(new SessionConfig
{
    ToolSearch = new ToolSearchConfig { Defer = "auto" },
});

Feature: opaque metadata passthrough on tool definitions

Tool definitions now accept an optional metadata bag that is forwarded verbatim in session.create and session.resume RPC calls. This lets hosts attach namespaced, implementation-specific metadata to tools without expanding the typed public contract; unknown keys are preserved and round-tripped untouched. (#1864)

session.defineTool("my-tool", { metadata: { "myapp:priority": 1 } }, handler);

session.DefineTool("my-tool", new ToolOptions { Metadata = new() { ["myapp:priority"] = 1 } }, handler);

Other changes

• feature: [All SDKs] add canvasProvider field to session create/resume config so hosts can supply a stable canvas-provider identity that survives cold resume (#1847)
• feature: [All SDKs] forward enableManagedSettings flag in session create/resume for enterprise managed-settings enforcement (#1925)
• feature: [All SDKs] propagate agentId, parentAgentId, and interactionType from LLM inference start frames into request-handler contexts (#1949)
• improvement: [Rust] make tool schema and MCP server serialization deterministic by replacing HashMap with IndexMap (#1931)
• improvement: [Rust] use native-tls for the build-time CLI download (#1964)
• bugfix: [.NET] avoid Windows in-process test teardown deadlock (#1997)

New contributors

• @agoncal made their first contribution in #1951
• @Shivam60 made their first contribution in #1964
• @rinceyuan made their first contribution in #1978
• @belaltaher8 made their first contribution in #1864

Full Changelog: v1.0.6...v1.0.7

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