Files
hermes-agent/agent
Teknium d3a1c46510 feat(agent): context size anchors on provider-reported usage — estimation shrinks to the last turn
Every provider response carries usage.prompt_tokens — exact ground truth
for the full request (system prompt + tool schemas + history). Context-size
checks now anchor on the last main-loop response's usage and estimate only
the messages appended since, instead of re-estimating the whole history
with chars/4 heuristics and flat 1500-token image costs. The estimate error
window shrinks from the entire conversation to one turn and self-corrects
at every response.

- agent/model_metadata.py: capture_usage_anchor() / anchored_context_tokens()
  with a structural base-message identity check that fails closed on any
  transcript rewrite.
- agent/conversation_loop.py: anchor captured at the single main-loop usage
  site (MoA uses pre-fold aggregator usage; advisor/aux calls never anchor);
  pre-API pressure check prefers the anchor.
- agent/turn_context.py: preflight compression estimate prefers the anchor.
- agent/context_breakdown.py: /context display prefers the anchor.
- Invalidation: compaction rewrite (conversation_compression), codex native
  compaction (codex_runtime), session reset/switch (run_agent), plus the
  fail-closed structural check for splices/micro-compaction.
- Usage-less responses keep the previous anchor; no anchor -> pure
  estimation fallback (first request of a session).
2026-08-28 07:51:31 -07:00
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