# Velocity policy (/programs/policy-vault/velocity-policy)



`In progress`

The Velocity policy applies a rolling counter before a payment can proceed. The composer carries velocity deltas only on the all-policies-allowed branch.

| Source        | Path                                                                                                                                                                                             |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| evaluator     | [`programs/policy-vault/src/policies/velocity.rs`](https://github.com/agenttrust-labs/agenttrust/blob/main/programs/policy-vault/src/policies/velocity.rs)                                       |
| account state | [`programs/policy-vault/src/state/velocity_ledger.rs`](https://github.com/agenttrust-labs/agenttrust/blob/main/programs/policy-vault/src/state/velocity_ledger.rs)                               |
| proof         | [`programs/policy-vault/src/proofs/inv_velocity_counter_le_limit.rs`](https://github.com/agenttrust-labs/agenttrust/blob/main/programs/policy-vault/src/proofs/inv_velocity_counter_le_limit.rs) |