Provide a tool schema that requires deep analysis to fill out correctly. Citations and scores for everything. Examples of high quality citations. Tools that fail or produce low quality results should return instructions about how to recover or interpret the result.

Have agents with different research tools try to corroborate and peer review output from competing agents. This is just one of many collaborative or competitive patterns you can model.

Yeah, it can get quite a bit more dynamic than an if statement if you apply some creativity and clarity and conviction.