parse_tool_arguments: Parse Tool Arguments

In aisdk: Unified Interface for AI Model Providers

Parse Tool Arguments

Description

Robustly parse tool call arguments from various formats that different LLMs may return. Handles edge cases like incomplete JSON, malformed strings, and various empty representations.

Implements multi-layer parsing strategy (inspired by Opencode):

1. Direct pass-through for already-parsed lists

2. Empty value detection and normalization

3. JSON repair for common LLM mistakes

4. Fallback parsing with JavaScript object literal support

5. Graceful degradation to empty args on failure

Usage

parse_tool_arguments(args, tool_name = "unknown")

Arguments

args	The arguments to parse (can be string, list, or NULL).
tool_name	Optional tool name for better error messages.

Value

A named list of parsed arguments (empty named list if no arguments).

aisdk documentation built on May 29, 2026, 9:07 a.m.