11 / See what was sent
Inspect and replay live HTTP traffic without changing the application first
Capture authorized requests, understand what was actually sent, and replay a controlled copy with targeted changes.
SENDERCAPTUREREPLAY
POST /hooks/paymentx-signature: ••••7af2content-type: application/jsonWorking reference
What goes in, what comes out, and what the result can prove.
Concrete artifact
Compare observed traffic with intended construction
Observed Authorization: Bearer expired-token
Expected Authorization: Bearer refreshed-token
Replay 200 OK
Finding refresh completed after request dispatchReview sequence
Three checks before the result becomes a decision.
Capture
Retain method, URL, headers, payload and time.
Diff
Make every replay edit explicit.
Replay
Use an authorized target and label replayed traffic.
Limits
What this workflow does not prove.
- Captured traffic may contain credentials and personal data.
- Replaying non-idempotent requests can duplicate writes.
- TLS interception requires deliberate trust configuration and authorization.
Questions worth answering
Before you put it into a real workflow.
Can it capture webhooks?
Yes. Point an authorized webhook sender at the generated endpoint and inspect the incoming request.
Can I edit and replay a request?
Yes. Review the destination and remove sensitive or unintended data before replaying.
Should I capture production secrets?
Avoid it. Use test credentials and redact sensitive values whenever possible.
Next move
Start with one concrete API problem.
Keep the first step small. Move into a workspace when the result deserves to be saved, repeated, or shared.