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fix(ai): detect anthropic request_too_large overflow closes #2734

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Mario Zechner
2026-04-01 23:51:27 +02:00
parent d98b563165
commit 39b1bf7b62
2 changed files with 8 additions and 2 deletions
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4
packages/ai/CHANGELOG.md
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@@ -2,6 +2,10 @@
## [Unreleased]
### Fixed
- Fixed Anthropic context overflow detection to recognize HTTP 413 `request_too_large` errors, so callers can trigger compaction and retry instead of getting stuck on repeated oversized-image requests ([#2734](https://github.com/badlogic/pi-mono/issues/2734))
## [0.64.0] - 2026-03-29
### Added

6
packages/ai/src/utils/overflow.ts
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@@ -9,6 +9,7 @@ import type { AssistantMessage } from "../types.js";
* Provider-specific patterns (with example error messages):
*
* - Anthropic: "prompt is too long: 213462 tokens > 200000 maximum"
* - Anthropic: "413 {\"error\":{\"type\":\"request_too_large\",\"message\":\"Request exceeds the maximum size\"}}"
* - OpenAI: "Your input exceeds the context window of this model"
* - Google: "The input token count (1196265) exceeds the maximum number of tokens allowed (1048575)"
* - xAI: "This model's maximum prompt length is 131072 but the request contains 537812 tokens"
@@ -25,7 +26,8 @@ import type { AssistantMessage } from "../types.js";
* - Ollama: Some deployments truncate silently, others return errors like "prompt too long; exceeded max context length by X tokens"
*/
const OVERFLOW_PATTERNS = [
/prompt is too long/i, // Anthropic
/prompt is too long/i, // Anthropic token overflow
/request_too_large/i, // Anthropic request byte-size overflow (HTTP 413)
/input is too long for requested model/i, // Amazon Bedrock
/exceeds the context window/i, // OpenAI (Completions & Responses API)
/input token count.*exceeds the maximum/i, // Google (Gemini)
@@ -73,7 +75,7 @@ const NON_OVERFLOW_PATTERNS = [
* ## Reliability by Provider
*
* **Reliable detection (returns error with detectable message):**
* - Anthropic: "prompt is too long: X tokens > Y maximum"
* - Anthropic: "prompt is too long: X tokens > Y maximum" or "request_too_large"
* - OpenAI (Completions & Responses): "exceeds the context window"
* - Google Gemini: "input token count exceeds the maximum"
* - xAI (Grok): "maximum prompt length is X but request contains Y"