Left: comparison, for a distance smaller than the emitter size, of the EC scattering on the disc photon field computed with agnpy (red solid line) and jetset (dashed blue line) against the results in Finke (2016) (black dashed line). Right: comparison, for a distance much larger than the emitter size, of the SED obtained with agnpy considering the full disc energy density (solid red line) or approximating it with a monochromatic point-source (black line) with the same photon energy at the inner (dashed line) or outer (dotted line) disc radius. The SED computed by jetset at the same distance is displayed with the dashed blue line. The bottom panels display the deviation of agnpy from the reference (or the approximation). Fluxes and frequencies are given in the observer reference frame.