Agree on interfaces before fan-out
Use contracts to make task boundaries legible before multiple implementations proceed.
Trade-off: Contracts add coordination before implementation.
Tool / Contracts
Pact
Contract-first decomposition so agents can build behind typed interfaces.
The summary describes what the project says it does; inclusion is not an endorsement.
Approaches it illustrates
Move coordination earlier
Use contracts, ownership signals or merge-conflict forecasts before the changes arrive at the gate.
Trade-off: Earlier coordination reduces ambiguity but moves work into planning.