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fix(token-meter): keep pressure anchors conservative

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Hypatia May
2026-07-16 15:26:30 +08:00
parent 6d96b3e4a8
commit 06e0450b8d
4 changed files with 44 additions and 10 deletions
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docs/core-data-structures/token-meter.md
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@@ -23,7 +23,7 @@ interface TokenMeasurement {
}
```
`baseline.kind === 'usage'` means the latest successful provider call has the same canonical request envelope. `estimated` means the service priced the complete envelope and surface with its fixed heuristic. A later successful request replaces the earlier anchor; signed `surfaceDeltaTokens` preserves growth and shrinkage relative to a matching anchor. `totalTokens` remains request-and-response pressure, while `surfaceTokens` is the surface-only heuristic total and equals the sum of the node prices.
`baseline.kind === 'usage'` means the latest successful provider call has the same canonical request envelope and its total is no lower than that call's full heuristic anchor. `estimated` means no reusable conservative usage anchor exists, so the service priced the complete envelope and surface with its fixed heuristic. A later successful request replaces the earlier anchor; signed `surfaceDeltaTokens` preserves growth and shrinkage relative to a matching anchor. `totalTokens` remains request-and-response pressure, while `surfaceTokens` is the surface-only heuristic total and equals the sum of the node prices.
## `TokenSurfaceNode`