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source dump of claude code forked from oppi.li/claude-code
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3.4 kB · 94 lines
TypeScript
at main
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495/** * Anthropic API Limits * * These constants define server-side limits enforced by the Anthropic API. * Keep this file dependency-free to prevent circular imports. * * Last verified: 2025-12-22 * Source: api/api/schemas/messages/blocks/ and api/api/config.py * * Future: See issue #13240 for dynamic limits fetching from server. */
// =============================================================================// IMAGE LIMITS// =============================================================================
/** * Maximum base64-encoded image size (API enforced). * The API rejects images where the base64 string length exceeds this value. * Note: This is the base64 length, NOT raw bytes. Base64 increases size by ~33%. */export const API_IMAGE_MAX_BASE64_SIZE = 5 * 1024 * 1024 // 5 MB
/** * Target raw image size to stay under base64 limit after encoding. * Base64 encoding increases size by 4/3, so we derive the max raw size: * raw_size * 4/3 = base64_size → raw_size = base64_size * 3/4 */export const IMAGE_TARGET_RAW_SIZE = (API_IMAGE_MAX_BASE64_SIZE * 3) / 4 // 3.75 MB
/** * Client-side maximum dimensions for image resizing. * * Note: The API internally resizes images larger than 1568px (source: * encoding/full_encoding.py), but this is handled server-side and doesn't * cause errors. These client-side limits (2000px) are slightly larger to * preserve quality when beneficial. * * The API_IMAGE_MAX_BASE64_SIZE (5MB) is the actual hard limit that causes * API errors if exceeded. */export const IMAGE_MAX_WIDTH = 2000export const IMAGE_MAX_HEIGHT = 2000
// =============================================================================// PDF LIMITS// =============================================================================
/** * Maximum raw PDF file size that fits within the API request limit after encoding. * The API has a 32MB total request size limit. Base64 encoding increases size by * ~33% (4/3), so 20MB raw → ~27MB base64, leaving room for conversation context. */export const PDF_TARGET_RAW_SIZE = 20 * 1024 * 1024 // 20 MB
/** * Maximum number of pages in a PDF accepted by the API. */export const API_PDF_MAX_PAGES = 100
/** * Size threshold above which PDFs are extracted into page images * instead of being sent as base64 document blocks. This applies to * first-party API only; non-first-party always uses extraction. */export const PDF_EXTRACT_SIZE_THRESHOLD = 3 * 1024 * 1024 // 3 MB
/** * Maximum PDF file size for the page extraction path. PDFs larger than * this are rejected to avoid processing extremely large files. */export const PDF_MAX_EXTRACT_SIZE = 100 * 1024 * 1024 // 100 MB
/** * Max pages the Read tool will extract in a single call with the pages parameter. */export const PDF_MAX_PAGES_PER_READ = 20
/** * PDFs with more pages than this get the reference treatment on @ mention * instead of being inlined into context. */export const PDF_AT_MENTION_INLINE_THRESHOLD = 10
// =============================================================================// MEDIA LIMITS// =============================================================================
/** * Maximum number of media items (images + PDFs) allowed per API request. * The API rejects requests exceeding this limit with a confusing error. * We validate client-side to provide a clear error message. */export const API_MAX_MEDIA_PER_REQUEST = 100