Overview

A transaction restriction is a rule that says: "If a transaction matches these criteria, then these approvers must sign off." Each restriction has:

• Filters - the conditions that decide whether a restriction applies (asset, amount, source account, destination, initiator group, etc.)
• Action - who must approve when the filters match, or whether to block the transaction

Transaction restrictions cover anything that signs or broadcasts a transaction: transfers, contract calls, contract deploys, raw signing, staking, sponsored transactions, and allocations.

Evaluation Semantics

Transaction restrictions are additive. When a transaction arrives:

1. Every transaction restriction is checked against the transaction.
2. For each restriction whose filters match, its approval requirements are added.
3. The transaction is allowed when all the accumulated approval requirements are satisfied.
4. If no restriction matches, the transaction is allowed without approvals.

This means the policy engine is allow-by-default: to block something, you must write a restriction that matches it and sets Action to Block.

Filter Values

Filters in the UI use these patterns:

• Any - matches everything for that field
• Only: A, B, C - matches only the listed values
• All except: A, B, C - matches everything except the listed values

Amount filters use a numeric threshold with a currency. 0 USD is treated as "any amount" (the filter is effectively disabled).

Initiator group filter

On Block restrictions, the form includes When initiated by. This scopes the rule to initiator groups (the same groups used for approvers, assigned under Settings → Groups).

• All users - the restriction applies to every initiator (when the other filters match).
• All users, except group(s) - the restriction applies to every initiator except members of the listed groups. Those groups are exempt from this restriction.

The initiator group filter uses All except semantics only. There is no Only: group Y mode. To limit an account to one group, write a Block rule on that source account with All users, except that group.

When an exempt initiator starts a transaction, they must still confirm it first so Policy Nodes can verify group membership before honoring the exemption.

Action

The Action column in the UI says what happens when the filters match:

• N of group - requires N distinct approvals from members of that group (e.g. 2 of owner). Each approver can sign only once per operation.
• N of multiple groups (e.g. 1 of owner, treasury when both groups are selected on one rule) - requires N approvals in total from the combined membership of all selected groups. Approvals may come from any listed group. A user who belongs to more than one selected group still counts as one approver; one signature from that user satisfies the whole requirement. This is not "one approval from each group."
• Block - denies the transaction; no approver set can satisfy it

When you need separate requirements from different groups on the same transaction (for example 2 of owner and 1 of compliance), add separate transaction restrictions whose filters both match.

Example: one rule selects groups owner and treasury with No. Required = 1.

Confirmation and approval

When a transaction requires approvals and has an initiator, the initiator must confirm it first. Confirmation is the initiator's signed attestation to the intent shown in the Approver App. After confirmation, the wallet collects any remaining approvals from the configured approver groups.

The initiator acts as confirmer during that first step. Whether confirmation also counts as an approval depends on group membership:

• If the initiator belongs to any group that contributes to a matched approval requirement, their confirmation counts as one approval toward that requirement.
• If the initiator does not belong to any contributing group, confirmation does not reduce the approval count. The full number of approvals is still required.

Example: a restriction requires 2 of owner.

Confirmation is skipped when no approvals are required, or when the operation has no initiator (for example some API-initiated flows).

UI Columns

Each row in the Transaction tab is one restriction. When you add or edit a restriction, the form groups When initiated by (Block rules only), Action (Block or Approvals), Group(s) and No. Required, Source (and source accounts when narrowed), Amount (USD), and an Advanced section for Destination, Symbol, and Function (for example Mint, Burn, Clawback).

Scenarios

All restrictions are added independently; their effects accumulate.

Scenario 1: Two-of-N owner approval for any transaction

The simplest baseline: every transaction needs two approvals from the owner group.

Result: any transfer, contract call, deploy, raw sign, etc. requires 2 owner approvals. If the initiator is in owner, they confirm first and that confirmation counts as one of the two; otherwise the initiator confirms and two separate owner approvals are still required.

Scenario 2: Higher bar for large transfers

Keep the baseline rule, and require an additional compliance approval whenever the transaction value is at or above 100,000 USD.

Result:

• A 50,000 USD transfer matches only the baseline rule and needs 2 owner approvals.
• A 250,000 USD transfer matches both rules and needs 2 owner approvals plus 1 compliance approval.

Scenario 3: Allowlist for external destinations

Block transfers to anywhere except a known set of audited counterparty addresses. Internal transfers between vault accounts are unaffected.

Result:

• A transfer to one of the listed counterparties does not match this rule, so only the baseline rule applies.
• A transfer to any other external address matches this rule and is denied.

Scenario 4: Restricted minting authority

Mint operations on tokens should only be initiated from the conversionWallet source account, and only with elevated approvals depending on size.

Result:

• Any Mint attempted from a source other than conversionWallet is blocked.
• A Mint from conversionWallet under 1,000,000 USD requires 1 approval from operationsMint.
• A Mint from conversionWallet at or above 1,000,000 USD matches both Mint rules and requires 2 approvals from operationsMint (the higher requirement absorbs the lower).

Scenario 5: Restrict a source account to one initiator group

Limit which users may initiate transactions from a sensitive vault account. Only members of group treasuryOps may operate from treasuryAccount; everyone else is denied when sending from that account.

Result:

• A user in treasuryOps initiates from treasuryAccount. This restriction does not apply to them (they are exempt). The transaction proceeds if no other restriction blocks it or adds approvers.
• A user who is not in treasuryOps initiates from treasuryAccount. The restriction matches and Block denies the transaction.
• A transfer from any other source account does not match the Source filter, so this rule is ignored.