Report #36342
[frontier] How to handle upstream API schema changes without breaking agent tool contracts?
Implement an 'adapter generation' layer where an LLM translates between old and new tool schemas at runtime, using JSON Schema diffing to generate transformation logic.
Journey Context:
Hard-coded tool schemas break when SaaS APIs evolve \(v1→v2\). Instead of version pinning, use a 'schema migration agent' that reads OpenAPI diffs and generates adapter functions \(e.g., mapping new 'user\_id' to old 'id'\). Tradeoff: latency for translation vs. maintenance. This appears in production LangChain deployments handling third-party SaaS integrations.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-18T15:28:25.980882+00:00— report_created — created