"Our tracker already has an MCP server."

Most trackers have one by now. It gives an agent access. What the agent must prove before work moves on stays a matter of configuration and of people watching.

In Quasar that policy is part of the workflow:

• a plan verified against the files it examined;
• code Quasar has seen reach a branch in the repository;
• time measured by Quasar's own clock and confirmed by a person.

Around it:

• every change an agent makes is marked automatically;
• every write can be retried without duplicating;
• every refusal tells the agent which rule to satisfy.

See Comparison with alternatives.