generated: '2026-07-18'
method: searched
source: https://intl.cloud.baidu.com/doc/qianfan/index.html, https://lbsyun.baidu.com/faq/api?title=webapi
summary:
  types: [apiKey, http]
  api_key_in: [header, query]
notes: >
  Baidu has no single unified auth model — each product line documents its own scheme.
schemes:
  - name: qianfan-bearer
    product: Baidu AI Cloud Qianfan (LLM / MaaS)
    type: http
    scheme: bearer
    location: Authorization header
    format: "API key prefixed bce-v3/ALTAK-..., created in the Baidu Intelligent Cloud console (Security Authentication > API Key)"
    openai_compatible: true
    base_url: https://qianfan.baidubce.com/v2
    docs: https://intl.cloud.baidu.com/doc/qianfan/index.html
  - name: bce-ak-sk-signature
    product: Baidu Cloud (BCE) IAM signed requests / SDKs
    type: apiKey
    scheme: signature
    location: Authorization header (BCE signing with Access Key + Secret Key)
    docs: https://intl.cloud.baidu.com/doc/Reference/s/Njwvz1wot
  - name: maps-ak
    product: Baidu Maps Open Platform (LBS Web Service API)
    type: apiKey
    in: query
    parameter: ak
    optional_signature: SN (SHA-1 signature over request + SK) for server-side keys
    docs: https://lbsyun.baidu.com/faq/api?title=webapi/appendix