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Agent: document 2000px image downscale

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Peter Steinberger
2025-12-18 23:02:33 +00:00
parent d66d5cc17e
commit 0c06276b48
2 changed files with 8 additions and 0 deletions
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6
src/agents/pi-tools.ts
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@@ -11,6 +11,12 @@ type ToolContentBlock = AgentToolResult<unknown>["content"][number];
type ImageContentBlock = Extract<ToolContentBlock, { type: "image" }>;
type TextContentBlock = Extract<ToolContentBlock, { type: "text" }>;
// Anthropic Messages API limitation (observed in Clawdis sessions):
// When sending many images in a single request (e.g. via session history + tool results),
// Anthropic rejects any image where *either* dimension exceeds 2000px.
//
// To keep sessions resilient (and avoid "silent" WhatsApp non-replies), we auto-downscale
// all base64 image blocks above this limit while preserving aspect ratio.
const MAX_IMAGE_DIMENSION_PX = 2000;
function sniffMimeFromBase64(base64: string): string | undefined {