The genome size is 4.74 Mbp, G+C percentage is 37.94%, with 98.85% completeness and 2.13% contamination. It contains a plasmid (2,470 bp). The closest relative to strain CLA-AA-H227 was Robertmurraya spiralis (99.23%) based on 16S rRNA gene analysis. The highest POCP scores were to members of the genus Robertmurraya (Robertmurraya kyonggiensis, 84.9%; R. spiralis, 65.33%). The placement of strain CLA-AA-H227 within Robertmurraya was confirmed by GTDB-Tk assignment as ‘Robertmurraya yapensis’, a reclassification of the species ‘Bacillus yapensis’, although neither name has been validated. ANI comparison confirmed that CLA-AA-H227 represents a novel species, as values to close relatives were below the species level threshold. Functional analysis showed the strain has 246 transporters, 53 secretion genes, and predicted utilization of arbutin, salicin, cellobiose, starch, and production of butyrate, acetate, propionate, folate, riboflavin, and cobalamin. In total, 238 CAZymes were identified. The strain CLA-AA-H227 (phylum Bacillota, family Bacillaceae) was isolated from human faeces.