Comparison
Other tools watch what your agent said.
Spooled watches what it did.
| Capability | Observability tools | Spooled |
|---|---|---|
| Detects execution shape changes | Not a primary focus | 3D fingerprint similarity |
| Pre-merge behavioral testing | Post-deploy monitoring | Policy-gated per PR |
| Git-native baselines | Cloud-stored baselines | Committed to repo |
| Tamper-evident audit trail | Standard logging | SHA-256 hash chain |
| Content stays on your infra | Typically cloud-hosted | Architecturally enforced |
| Content-blind quality signals | Typically requires content | Structural metadata only |
| Primary approach | Trace logging / output evals / APM | Behavioral diff — before merge |
Observability tools need your data to work. Spooled doesn't. That's not a privacy policy — it's the design.
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