title: API: Provide an access token role: manual tags: #api #manual #zettelstore syntax: zmk back: 00001012000000 00001012080500 backward: 00001012000000 00001012080500 box-number: 1 copyright: (c) 2020-present by Detlef Stern created: 00010101000000 forward: 00001012050200 00001012921000 lang: en license: EUPL-1.2-or-later modified: 20220218130020 published: 20220218130020 visibility: public The [authentication process](00001012050200) provides you with an [access token](00001012921000). Most API calls need such an access token, so that they know the identity of the caller. You send the access token in the Authorization request header field, as described in [RFC 6750, section 2.1](https://tools.ietf.org/html/rfc6750#section-2.1). You need to use the Bearer authentication scheme to transmit the access token. For example (in plain text HTTP): GET /z HTTP/1.0 Authorization: Bearer eyJhbGciOiJIUzUxMiJ9.eyJfdGsiOjEsImV4cCI6MTYwMTczMTI3NSwiaWF0IjoxNjAxNzMwNjc1LCJzdWIiOiJhYmMiLCJ6aWQiOiIyMDIwMTAwMzE1MDEwMCJ9.ekhXkvn146P2bMKFQcU-bNlvgbeO6sS39hs6U5EKfjIqnSInkuHYjYAIfUqf_clYRfr6YBlX5izii8XfxV8jhg Note, that there is exactly one space character ( , U+0020) between the string Bearer and the access token: `Authorization: Bearer eyJhbGciOiJIUzUxMiJ9.ey...`. If you use the [curl](https://curl.haxx.se/) tool, you can use the -H command line parameter to set this header field.