Function buildMcpToolDefinitions

src/proxy.ts:578–594

Convert OpenAI tool definitions to Cursor's MCP tool protobuf format.

(tools: OpenAIToolDef[])

/** Convert OpenAI tool definitions to Cursor's MCP tool protobuf format. */
function buildMcpToolDefinitions(tools: OpenAIToolDef[]): McpToolDefinition[] {
  return tools.map((t) => {
    const fn = t.function;
    const jsonSchema: JsonValue =
      fn.parameters && typeof fn.parameters === "object"
        ? (fn.parameters as JsonValue)
        : { type: "object", properties: {}, required: [] };
    const inputSchema = toBinary(ValueSchema, fromJson(ValueSchema, jsonSchema));
    return create(McpToolDefinitionSchema, {
      name: fn.name,
      description: fn.description || "",
      providerIdentifier: "opencode",
      toolName: fn.name,
      inputSchema,
    });
  });
}

/** Decode a Cursor MCP arg value (protobuf Value bytes) to a JS value. */
function decodeMcpArgValue(value: Uint8Array): unknown {