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DeFi Shield Diff Impact Analyzer
x402
DeFi Shield Diff Impact Analyzer is a paid API for AI agents from defi-shield-hazel.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Performs line-by-line diff analysis between two code versions to detect breaking changes, export/signature/type modifications, and impact severity.
Price / call$0.05
Success—
StatusUnknown
Output
Returns a structured report with a line-by-line diff, a list of detected breaking changes, modified export names, changed function signatures, type changes, and an overall impact assessment indicating severity and affected surface area.
Example use cases
Example prompt
“Can you run a diff impact analysis on these two versions of my code and tell me if there are any breaking changes, signature changes, or modified exports — here's the before and after content?”
Technical details
Endpoint
POSThttps://defi-shield-hazel.vercel.app/api/dev/diff-impactWhen to prefer
Use this endpoint when you need structured, programmatic detection of breaking changes between two code versions — especially when tracking export stability, function signature changes, or type modifications. Prefer this over generic diff tools when you need semantic impact classification, not just textual differences.
Side effects
- Empty or identical before/after inputs return no changes detected
- Malformed or non-parseable code may result in parse errors or incomplete diff
- Very large files may exceed payload limits
- Missing required before or after code fields return 400 validation errors
- Non-code text inputs may produce unreliable signature/type tracking
Input
{
"input": {
"body": {
"language": "typescript",
"new_code": "export function calculateFee(amount: number, taxRate: number = 0.01): number {\n return amount * taxRate;\n}\n\nexport interface Config {\n apiKey: string;\n timeout: number;\n retryCount?: number;\n}",
"old_code": "export function calculateFee(amount: number): number {\n return amount * 0.01;\n}\n\nexport interface Config {\n apiKey: string;\n timeout: number;\n}"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"summary": "3 additions, 2 deletions. 1 breaking change(s) found. Review breaking changes before merging.",
"language": "typescript",
"additions": 3,
"deletions": 2,
"diff_lines": [
{
"status": "removed",
"content": "export function calculateFee(amount: number): number {",
"lineNumber": 1
},
{
"status": "removed",
"content": " return amount * 0.01;",
"lineNumber": 2
},
{
"status": "added",
"content": "export function calculateFee(amount: number, taxRate: number = 0.01): number {",
"lineNumber": 1
},
{
"status": "added",
"content": " return amount * taxRate;",
"lineNumber": 2
},
{
"status": "added",
"content": " retryCount?: number;",
"lineNumber": 8
}
],
"risk_level": "medium",
"analyzed_at": "2026-06-13T04:21:50.332Z",
"breaking_changes": [
{
"type": "changed_signature",
"severity": "high",
"description": "Function \"calculateFee\" signature changed: (amount: number) → (amount: number, taxRate: number = 0.01)"
}
],
"response_time_ms": 2,
"total_lines_changed": 5,
"backwards_compatible": false
}Tags
x402
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