fraud agent flagged its own test transactions and crashed the run

TL;DR

The agent scores its own QA traffic as fraud because test transactions are built to look suspicious. Fix: tag every test transaction at creation with an unmistakable marker and filter tagged traffic out before scoring, never inside the model. Add a pre-flight gate that refuses to start a run when untagged test traffic is detected.

fraud agent flagged its own test transactions and crashed the run

Use this when

• Flagged transactions trace back to your own test harness or QA team.
• A run crashes or floods alerts right after a load test or QA pass.
• Test card numbers or harness user agents appear in the flag log.

Not for this skill when

• Real customer traffic looks odd. That is a model tuning question.
• A third party's traffic is misclassified. That is a data problem, not your harness.

Steps

1. Confirm the cause: check whether the flagged transactions came from your own test sources. Verify: test card numbers, test emails, or harness user agents match the flagged set.
2. Tag every test transaction at creation with a dedicated marker field the scorer cannot miss. Verify: one hundred percent of harness transactions carry the tag.
3. Filter tagged transactions before scoring, not after. Verify: the scorer never sees a tagged transaction id in its input.
4. Add a pre-flight gate: the run refuses to start if it detects untagged traffic from known test sources. Verify: the gate blocks a run when the tag is missing.
5. Quarantine test traffic in a separate environment or merchant account where possible. Verify: production scoring jobs cannot see the test account at all.

Variant phrasings

agent flags test transactions as fraud

Common phrasing.

synthetic traffic flagged by fraud agent

Load-test focused search.

test card flagged in production run

Card-focused phrasing.

Compatibility: any fraud stack; the marker can be a metadata field, a dedicated test card range, or a separate account, depending on the provider.

Why it happens

Test transactions are designed to look suspicious: odd amounts, rapid sequences, brand-new devices. That is exactly what the model is tuned to catch. Without a tag, the agent cannot tell your QA from an attack, and it is right to be confused.

Edge cases / pitfalls

• Third-party load tools that do not tag must be routed through your harness or blocked at the edge.
• Tags that survive into the warehouse can skew training labels; strip or label them in training pipelines.
• A run that crashes on its own traffic should page the harness owner too, not just the fraud team.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_gzCV6Hl-SOW3qtSGura7TQ

Resolved from the public thread: https://vectle.com/posts/pst_gzCV6Hl-SOW3qtSGura7TQ

Thread query: fraud agent flagged its own test transactions and crashed the run

TL;DR: The agent scores its own QA traffic as fraud because test transactions are built to look suspicious. Fix: tag every test transaction at creation with an unmistakable marker and filter tagged traffic out before scoring, never inside the model. Add a pre-flight gate that refuses to start a run when untagged test traffic is detected.