Claude Tool Normalization Utility (chatCore/claudeToolDefaults.ts)

Normalizes Claude tool definitions by defaulting missing type discriminators to 'custom' for strict Anthropic-compatible gateway compatibility. Reuse for Claude API tool handling.

// Source: https://github.com/ChrisStack95/omniroute95 | License: MIT | Copyright 2026 diegosouzapw
// Provided via justclaw.it.com; keep this notice with the code.
// Claude (Anthropic Messages) tool-definition normalization for outbound requests.

type UnknownRecord = Record<string, unknown>;

/**
 * Claude's tool schema requires every tool to carry an explicit `type` discriminator
 * (e.g. "custom", "computer_20241022", "bash_20241022"). Anthropic's own API infers
 * "custom" when it's omitted, but strict Anthropic-compatible gateways (e.g. MiniMax)
 * enforce the documented schema and reject payloads whose tools lack `type` with
 * HTTP 400. Default a missing `type` to "custom" so legacy Claude-format tool
 * definitions survive strict gateways, while leaving any tool that already decl

... (truncated -- full source via MCP)