# routing (https://lazyfrog.dev/docs/tools/routing)

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**{"Routing rules"}** · Can change or delete · actions: `get`, `check`, `set`

<p>{"For reading use routing_read, which is read-only and needs no approval: \"get\", \"check\" here are deprecated (still works). The project's routing.json, applied by the platform in front of the app (in preview now; production gets it with the code when published). action \"get\": the file and whether it is in force. action \"check\": what a visitor with no password gets at path (env, default preview; or host, another address under the site domain such as an old slug's), asked from outside through the routing, since http_get and http_request skip it; with username and password, whether that sign-in gets in. action \"set\": replace the whole file with routing (an object; {} removes every rule). Keys: redirects, rewrites (to a path, optionally on another service from services.json), headers (response headers), cors, auth (username + password for paths; the password is hashed and never shown; omit it to keep an existing rule's, or on a new rule to let the owner choose it in the portal, which is better than choosing one for them), allow_ips, allow_countries (ISO codes, from Cloudflare), error_pages (status or \"4xx\"/\"5xx\" → a path the app serves, shown to browsers). Sources are paths with :name for one segment and :name* for the rest. Example: {\"redirects\":[{\"source\":\"/old/:path*\",\"destination\":\"/new/:path*\",\"permanent\":true}],\n\"rewrites\":[{\"source\":\"/api/:path*\",\"destination\":\"/:path*\",\"service\":\"api\"}],\n\"headers\":[{\"source\":\"/assets/:path*\",\"headers\":{\"Cache-Control\":\"public, max-age=31536000, immutable\"}}],\n\"cors\":[{\"source\":\"/api/:path*\",\"origins\":[\"https://example.com\"],\"methods\":[\"GET\",\"POST\"],\"headers\":[\"Content-Type\"]}],\n\"auth\":[{\"source\":\"/admin/:path*\",\"username\":\"admin\",\"password\":\"at least 8 characters\"}],\n\"allow_ips\":[\"203.0.113.0/24\"],\"allow_countries\":[\"DE\",\"NL\"],\"error_pages\":{\"404\":\"/404.html\",\"5xx\":\"/500.html\"}}"}</p>