flowstate / devkit

Developer observability kit  ·  v1.3.0

Build the flow.
Catch the anomaly.

A hands-on request intelligence workbench. Watch event streams move through a live pipeline, inspect parsed payload types, and surface the outliers before they become incidents.

Requests / min 1,284 ↗ 12.8% vs baseline
p95 latency 142 ms rolling window · 30 samples
Error rate 0.42% within 1% SLO
Anomalies flagged 00 robust MAD detector

Request throughput

EVENT STREAM · LAST 30 TICKS

LIVE
latency msanomaly
01 / INGESTcollect()→
02 / PARSEinferTypes()→
03 / SCOREdetectMAD()→
04 / ALERTemitSignal()

Anomaly detector

MEDIAN ABSOLUTE DEVIATION

ARMED
Monitoring streamBASELINE · 30
Latency deviation0.0σ
Error threshold0 / 5xx

Flags latency outliers above the rolling median + 4.5 × scaled MAD, and any 5xx response.

Event stream

MOST RECENT FIRST · MEMORY ONLY

0 EVENTS
Awaiting telemetry…demo stream initializing
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PAYLOAD INSPECTORevent.payload.jsonLIVE PARSE

          

          

            
DYNAMIC TYPE MAPSCHEMA INFERENCE

            

          

        


        

          

            
Bring your own endpoint
API request lab

            
Send a real Fetch request from this browser. Cross-origin endpoints must permit CORS; credentials are same-origin by default.

          

          

            

              

                
                

                  
                  
                

              

              
Header values must be strings.

              

              

                
                
                
              

              
Request data and demo telemetry stay in this tab. Nothing is sent to an analytics service.

            

            

              

                
Waiting for a request.
Send a request to inspect response data.

                
No response yet.

              

              
Request history

              
Requests in this page session appear here.