Function readToolInstructions

src/node/services/systemMessage.ts:291–313

(
  metadata: WorkspaceMetadata,
  runtime: Runtime,
  workspacePath: string,
  modelString: string,
  agentInstructions?: readonly string[]
)

 * @returns Map of tool names to their additional instructions
 */
export async function readToolInstructions(
  metadata: WorkspaceMetadata,
  runtime: Runtime,
  workspacePath: string,
  modelString: string,
  agentInstructions?: readonly string[]
): Promise<Record<string, string>> {
  // Tool instructions read the same `AGENTS.md` files as the system prompt;
  // anchor at the workspace root so sub-project workspaces still see parent
  // project tool sections (see `loadInstructionSources` doc).
  const workspaceRootPath = subProjectAwareWorkspaceRoot(metadata, runtime, workspacePath);
  const sources = await loadInstructionSources(metadata, runtime, workspaceRootPath);
  const globalContents = collectInstructionContents([sources.global]);
  const contextContents = collectInstructionContents(sources.context);

  return extractToolInstructions(globalContents, contextContents, modelString, {
    ...getToolAvailabilityOptions({
      workspaceId: metadata.id,
      parentWorkspaceId: metadata.parentWorkspaceId,
    }),
    agentInstructions,
  });
}

/**
 * For sub-project workspaces, callers typically pass the execution path