Recorded run. The engine (v0.1.0, ruleset 2026.10.4) produced this report from the bundled synthetic sample, with AI synthesis by llama3.2:3b running locally through ollama. It is stored with the site so it opens without a running engine. Run it live.

Full contextSynthetic sample dataCoverage · cobertura✦ AI · llama3.2:3b

Sample: A pricing refactor that quietly breaks its callers

Changed: 3 files · +24 −5
Symbols: 5 symbols changed · 1 breaking
Patch coverage: 21.1% patch coverage
Languages: Python
Analysed: 2026-10-08

13findings 9 deterministic 4 heuristic 0 ai-generated

2 high
9 medium
2 low

Review priorityrule-based label

High

2 high-severity deterministic or heuristic finding(s).

A triage label computed from severity and provenance, not a probability of failure.

Showing 13 of 13 findingsj/k to move

High2

Medium9

Low2

HighDeterministicHigh confidence

2 call site(s) incompatible with new signature of `format_price`

CG-API-001Breaking change

format_price changed (parameter currency removed; required parameter locale added). 2 of 3 call site(s) in the repository no longer match the new signature.

Why it matters

A caller still uses the old calling convention. In Python this raises TypeError at call time; in TypeScript it fails compilation.

Failure scenario

src/billing/invoice.py:9 still calls format_price the old way: it passes unexpected keyword argument currency. Python raises TypeError when that line runs.

Evidence (3)

E2Signature changeSignature of format_price changed

−format_price(amount: Decimal, currency: str = "USD") -> str

+format_price(amount: Decimal, locale: str) -> str

parameter currency removed
required parameter locale added

E3Call siteCall site src/billing/invoice.py:9 in render_line

8	def render_line(description: str, amount: Decimal, currency: str) -> str:
9	return f"{description}: {format_price(amount, currency=currency)}"
10

passes unexpected keyword argument currency

does not pass required argument locale

Resolved through an import

E4Call siteCall site tests/test_pricing.py:18 in test_format_price_defaults_to_usd

17	def test_format_price_defaults_to_usd():
18	assert format_price(Decimal("5")) == "$5.00"
19	assert format_price(Decimal("5"), "EUR") == "€5.00"

does not pass required argument locale

Resolved through an import

Suggested regression check

Update the incompatible callers, then add a regression test that calls format_price the way those callers do.

Generated from the analysis — not executed

from billing.pricing import format_price  def test_format_price_matches_callers():    # mirror the argument shape used at the call sites listed in the evidence    result = format_price(amount=..., locale=...)    assert result == ...  # expected value for these inputs

AI analysis

llama3.2:3bPassed grounding checks

The new signature of format_price changes the required parameter from currency to locale, making it incompatible with existing call sites.

Scenario. A function calls format_price with a currency argument, but the function is expecting a locale argument. This will cause a TypeError when trying to execute the function.

Uncertainty. low

High confidencecites

Model output is shown separately from the rule’s analysis and never changes the finding’s severity, confidence, or evidence.