| $-method | Get slot value from mw_base objects |
| check_pattern | Check input against acceptable input pattern |
| check_pattern-method | Check input against acceptable input pattern |
| check_puts | Check inputs/outputs match |
| check_puts-method | Check inputs/outputs match |
| context | Contexts |
| context_inputs | Valid inputs |
| context_outputs | Valid outputs |
| do_query | Query the Metabolomics Workbench database |
| do_query-method | Query the Metabolomics Workbench database |
| input_example | Valid input_value for input_item |
| input_item | Input items |
| is_valid | Check validity of context and inputs/outputs |
| is_valid-method | Check validity of context and inputs/outputs |
| output_item | Output items |