/Knowledge/sources/honojs__hono/llms-full/cors-middleware-options-allowheaders-string--6801be3f8706.md

CORS Middleware: Options > allowHeaders: string[] - hono-docs

CORS Middleware: Options allowHeaders: string[] Source evidence: /Sources/honojs hono/provenance.md Canonical citation: https://hono.dev/llms full.txt allowh...

CORS Middleware: Options > allowHeaders: string[]

Source evidence: /Sources/honojs__hono/provenance.md Canonical citation: https://hono.dev/llms-full.txt#allowheaders-string

Summary

The value of "Access-Control-Allow-Headers" CORS header. The default is [].

Content

The value of "Access-Control-Allow-Headers" CORS header. The default is [].

Metadata

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  "chunk_index": 0,
  "citation": "https://hono.dev/llms-full.txt#allowheaders-string",
  "coverage_role": "overview",
  "qualified_title": "Hono / llms-full / CORS Middleware > Options > allowHeaders: `string[]`",
  "retrieved_at": "2026-07-02T05:51:01Z",
  "section_index": 191,
  "source_id": "/honojs/hono",
  "source_type": "llms_full",
  "target_label": "llms-full",
  "title": "CORS Middleware: Options > allowHeaders: string[]",
  "upstream_url": "https://hono.dev/llms-full.txt",
  "version": "2026"
}

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