# Anthropic adds server tool flags to its API models

> Anthropic now reports which models can use web search and code execution tools via new capabilities.server_tools fields.

Oossa · 2026-10-07 · https://oossa.com/en/anthropic-adds-server-tool-flags-to-its-api-models

Event date: 2026-10-06

Anthropic updated its API on October 6, 2026. The Models API now includes a capabilities.server_tools section. It shows whether each model supports web search and code execution tools. Developers can read capabilities.server_tools.code_execution to see if a model accepts code execution, and capabilities.code_execution to know if code can call other tools.

## The facts

- Release date: 2026-10-06
- New fields: capabilities.server_tools and capabilities.server_tools.code_execution

## Why it matters

Developers can programmatically verify a model’s tool support, avoiding runtime errors when using search or code execution features.

## Sources & references

1. [docs.anthropic.com: October 6, 2026](https://docs.anthropic.com/en/release-notes/api#october-6-2026) – Anthropic API, 2026-10-06

Last updated: 2026-10-07