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feat(ai): add PI_CACHE_RETENTION env var for extended prompt caching

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Adds support for extended cache retention via PI_CACHE_RETENTION=long:
- Anthropic: 5m -> 1h TTL
- OpenAI: in-memory -> 24h retention

Only applies to direct API calls (api.anthropic.com, api.openai.com).
Proxies and other providers are unaffected.

fixes #967
This commit is contained in:
Mario Zechner 2026-01-29 02:22:06 +01:00
parent 605f6f494b
commit 1b6a147579
6 changed files with 256 additions and 1 deletions
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4
packages/ai/CHANGELOG.md
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@ -2,6 +2,10 @@
## [Unreleased]
### Added
- Added `PI_CACHE_RETENTION` environment variable to control cache TTL for Anthropic (5m vs 1h) and OpenAI (in-memory vs 24h). Set to `long` for extended retention. Only applies to direct API calls (api.anthropic.com, api.openai.com). ([#967](https://github.com/badlogic/pi-mono/issues/967))
### Fixed
- Fixed cross-provider handoff failing when switching from OpenAI Responses API providers (github-copilot, openai-codex) to other providers due to pipe-separated tool call IDs not being normalized, and trailing underscores in truncated IDs being rejected by OpenAI Codex ([#1022](https://github.com/badlogic/pi-mono/issues/1022))