I added a bit of functionality to discuss that will give you some insight into the prerequisites for an edge.

Overall it will tell you
- specific stats required
- specific skills required
- whether or not you'll ever be able to learn it
- if you're too low level to learn it

What it won't tell you
- You need a 23 strength
- You need 85% in create water
- If you need something special like imm experience, observation experience, certain number of kills, etc.

Example output:
discuss guildmaster prereq hex augur
Hex Augur prerequisites
Stat : Wisdom
Skill : blindness
Skill : curse
Skill : poison