[FEATURE] Allow configuring WebFetch cache TTL

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The WebFetch tool currently includes an undocumented hardcoded 15-minute response cache. (according to Claude Code itself) There's no way to tune or bypass it via settings.json, an environment variable, or a CLI flag.

When manually approving each request it's very annoying to re-approve the same request multiple time. Atm. I still have to re-approve within the 15min window though.

Proposed Solution

It would be useful to expose this as configuration — e.g. a webFetch.cacheTtlSeconds setting in settings.json, or a bypass_cache: true parameter on the tool itself.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

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Additional Context

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