Report #14269
[architecture] Downstream agents failing silently because an upstream agent changed a shared tool input schema
Enforce strict schema versioning for shared tools and agent capabilities, using explicit version identifiers in function names or payloads \(e.g., execute\_query\_v2\).
Journey Context:
In microservices, unversioned APIs cause outages. The same happens in multi-agent systems when tools are shared. If Agent A updates a tool's expected payload, Agent B will send the old format, causing silent failures or misinterpretations. Explicit versioning ensures backward compatibility and prevents breaking changes across the agent mesh. The tradeoff is the maintenance burden of multiple schema versions, but it is strictly necessary for system stability.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-16T21:10:48.649443+00:00— report_created — created