<p></p>
<h3 dir="auto">Problem</h3>
<p dir="auto">A number of the API queries can have a variable number of parameters, for example both the element and user multi-fetch API. However no minimum and/or maximum supported length of the URL is documented, outside of what somebody found out by experimentation see <a href="https://wiki.openstreetmap.org/wiki/API_v0.6#Multi_fetch:_GET_/api/0.6/%5Bnodes%7Cways%7Crelations%5D?#parameters" rel="nofollow">https://wiki.openstreetmap.org/wiki/API_v0.6#Multi_fetch:_GET_/api/0.6/[nodes|ways|relations]?#parameters</a></p>
<p dir="auto">Normally I would have suggested to simply document what both the maintainers and OSM ops consider they should support, but given reality, I believe it would be better to provide the current value via the <em>capabilities</em>  call so that API users can dynamically adapt to whatever is currently supported.</p>

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