code_diff_context

code_diff_context combines a git diff with caller impact analysis. It shows what changed and — critically — which other functions are affected by those changes. A single call replaces git diff followed by manual code_callers lookups for every changed function.

Usage

code_diff_context()
code_diff_context(base="HEAD~3")
code_diff_context(base="main", include_callers=false)

Parameters

Parameter	Type	Default	Description
`base`	string	`HEAD~1`	Base ref to diff against
`include_callers`	boolean	true	Include callers of changed functions

Output

Changed functions (2):

PaymentService.charge  src/services/payment.ts
  + Added retry logic for transient failures
  Callers (3):
    OrderService.checkout   — CRITICAL
    SubscriptionService.renew — HIGH
    payment.test.ts           — MEDIUM

AuthService.validate  src/middleware/auth.ts
  ~ Modified token expiry check
  Callers (5):
    every authenticated route — CRITICAL

When to use

Before committing — understand the full blast radius of your changes
Code review — instantly see what a PR touches beyond the diff itself
After a merge — verify no unexpected functions were affected