Review OpenHands-style agent loops without reading the task content.

The problem

Open tool-using agents can alternate between action and observation for long stretches. CAUM focuses on the structural trajectory: repeated state signatures, pattern cycles, and low work conversion.

Use CAUM to separate benign long-running work from repeated structural pressure that deserves review.

Useful event fields

You do not need prompts, source code, documents, customer messages, or private payloads. Structural fields are enough for a first check.

• action/observation event
• tool family
• status
• state_id or hashed observation class
• latency/tokens/cost if available

Example shape

[{"event":"action","tool":"shell","phase":"execute","status":"error","state_id":"same_command_error"},
 {"event":"observation","tool":"runtime","phase":"observe","status":"ok","state_id":"same_observation"},
 {"event":"action","tool":"shell","phase":"execute","status":"error","state_id":"same_command_error"}]

What the free check returns

• events analyzed
• exact cycle coverage
• structural pattern cycle coverage
• work-yield proxy
• burn proxy
• trace quality