Report #57102
[frontier] Cannot maintain consistent agent behavior across sessions that exceed context window limits or are interrupted and resumed
Externalize agent identity and constraints to a persistent state store that is re-injected at each session boundary or context window rotation. Use a structured 'agent manifest' \(JSON or YAML\) defining identity, constraints, and current task state, and inject it as the first message in each new context window. The manifest should be machine-readable so it can be validated and versioned.
Journey Context:
The fundamental problem with maintaining agent identity in the context window is that the context window is finite and mutable. As sessions grow, either old context is dropped \(losing history\) or instructions are dropped \(losing identity\). The emerging pattern in 2025-2026 is to stop treating the context window as the primary store of agent identity and instead externalize it. This is analogous to how operating systems use external memory and reload state into CPU registers as needed, rather than storing everything in registers. Agent frameworks are implementing this with checkpointing systems that save and restore agent state. The key insight is that the agent manifest should be structured \(not natural language\) so it can be validated, versioned, and programmatically checked. This makes identity a first-class engineering concern rather than a prompt engineering trick.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T02:19:59.330388+00:00— report_created — created