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+(http-api)=
+
+# HTTP API
+
+VyOS provide an HTTP API. You can use it to execute op-mode commands,
+update VyOS, set or delete config.
+
+Please take a look at the {ref}`vyosapi` page for an detailed how-to.
+
+## Configuration
+
+```{cfgcmd} set service https allow-client address \<address\>
+
+Only allow certain IP addresses or prefixes to access the https
+webserver.
+```
+
+```{cfgcmd} set service https certificates ca-certificate \<name\>
+
+Use CA certificate from PKI subsystem
+```
+
+```{cfgcmd} set service https certificates certificate \<name\>
+
+Use certificate from PKI subsystem
+```
+
+```{cfgcmd} set service https certificates dh-params \<name\>
+
+Use {abbr}`DH (Diffie–Hellman)` parameters from PKI subsystem.
+Must be at least 2048 bits in length.
+```
+
+```{cfgcmd} set service https listen-address \<address\>
+
+Webserver should only listen on specified IP address
+```
+
+```{cfgcmd} set service https port \<number\>
+
+Webserver should listen on specified port.
+
+Default: 443
+```
+
+```{cfgcmd} set service https enable-http-redirect
+
+Enable automatic redirect from http to https.
+```
+
+```{cfgcmd} set service https tls-version \<1.2 | 1.3\>
+
+Select TLS version used.
+
+This defaults to both 1.2 and 1.3.
+```
+
+```{cfgcmd} set service https vrf \<name\>
+
+Start Webserver in given VRF.
+```
+
+```{cfgcmd} set service https request-body-size-limit \<size\>
+
+Set the maximum request body size in megabytes. Default is 1MB.
+```
+
+
+### API
+
+```{cfgcmd} set service https api keys id \<name\> key \<apikey\>
+
+Set a named api key. Every key has the same, full permissions
+on the system.
+```
+
+
+### REST
+
+```{cfgcmd} set service https api rest
+
+Enable REST API
+```
+
+```{cfgcmd} set service https api rest debug
+
+To enable debug messages. Available via {opcmd}`show log` or
+{opcmd}`monitor log`
+```
+
+```{cfgcmd} set service https api rest strict
+
+Enforce strict path checking.
+```
+
+
+### GraphQL
+
+```{cfgcmd} set service https api graphql introspection
+
+Enable GraphQL Schema introspection.
+```
+
+:::{note}
+Do not leave introspection enabled in production, it is a security risk.
+:::
+
+```{cfgcmd} set service https api graphql authentication type \<key | token\>
+
+Set the authentication type for GraphQL, default option is key. Available options are:
+* ``key`` use API keys configured in ``service https api keys``
+* ``token`` use JWT tokens.
+```
+
+```{cfgcmd} set service https api graphql authentication expiration
+
+Set the lifetime for JWT tokens in seconds. Default is 3600 seconds.
+```
+
+```{cfgcmd} set service https api graphql authentication secret-length
+
+Set the byte length of the JWT secret. Default is 32.
+```
+
+```{cfgcmd} set service https api graphql cors allow-origin \<origin\>
+
+Allow cross-origin requests from \<origin\>.
+```
+
+
+## Example Configuration
+
+Setting REST API and an API-KEY is the minimal configuration to get a working API Endpoint.
+
+```none
+set service https api keys id MY-HTTPS-API-ID key MY-HTTPS-API-PLAINTEXT-KEY
+set service https api rest
+```