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Direct Debit for Stablecoins

Pre-authorize recurring payments once. amser handles execution, retries, and access without custody or wallet pop-ups every cycle

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Non custodial • Time bound delegation • Deterministic execution

Authorize rules, not transactions

Every renewal in Web3 means chasing a wallet signature. Customers miss it, revenue leaks, and your team treats it as churn when it isn't.

amser flips the model. Users authorize a rule once just a cap, an interval, a token. From there, billing executes automatically. Access reflects payment status. Failed cycles retry. No wallet pop-ups, no manual intervention.

Define Rule

Create plans and constraints as explicit on chain state.

Define Rule

Create plans and constraints as explicit on chain state.

Authorize once

Users grant time bound permission without repeated approvals.

Authorize once

Users grant time bound permission without repeated approvals.

Enforce over time

Execution follows deterministic windows with clear failure reasons.

Enforce over time

Execution follows deterministic windows with clear failure reasons.

Authorization and execution become predictable building blocks.

What you get

`One authorization primitive. Billing, access, and automation built on top.`

Recurring revenue that doesn't leak

Subscriptions execute automatically each cycle. Failed charges retry. No manual renewals, no silent churn.

Access that reflects payment status

Discord roles, API keys, and gated content update the moment a subscription lapses or resumes.

A billing stack, not just a contract

Webhooks, retry logic, and a merchant dashboard — the operational layer your team actually needs to run.

One execution model underneath. Multiple product surfaces.

What you get

`One authorization primitive. Billing, access, and automation built on top.`

Recurring revenue that doesn't leak

Subscriptions execute automatically each cycle. Failed charges retry. No manual renewals, no silent churn.

Access that reflects payment status

Discord roles, API keys, and gated content update the moment a subscription lapses or resumes.

A billing stack, not just a contract

Webhooks, retry logic, and a merchant dashboard — the operational layer your team actually needs to run.

One execution model underneath. Multiple product surfaces.

What you get

`One authorization primitive. Billing, access, and automation built on top.`

Recurring revenue that doesn't leak

Subscriptions execute automatically each cycle. Failed charges retry. No manual renewals, no silent churn.

Access that reflects payment status

Discord roles, API keys, and gated content update the moment a subscription lapses or resumes.

A billing stack, not just a contract

Webhooks, retry logic, and a merchant dashboard — the operational layer your team actually needs to run.

One execution model underneath. Multiple product surfaces.

What you get

`One authorization primitive. Billing, access, and automation built on top.`

Recurring revenue that doesn't leak

Subscriptions execute automatically each cycle. Failed charges retry. No manual renewals, no silent churn.

Access that reflects payment status

Discord roles, API keys, and gated content update the moment a subscription lapses or resumes.

A billing stack, not just a contract

Webhooks, retry logic, and a merchant dashboard — the operational layer your team actually needs to run.

One execution model underneath. Multiple product surfaces.

Why merchants trust

These are properties of the system.

Transparent and verifiable

All authorization and execution logic lives on-chain. Anyone can verify what is allowed, when it executes, and why.

Transparent and verifiable

All authorization and execution logic lives on-chain. Anyone can verify what is allowed, when it executes, and why.

Deterministic execution

Actions execute only when predefined conditions are met. Execution may be attempted multiple times, but can only succeed once, and only within valid execution windows — deterministic and on-chain.

Deterministic execution

Actions execute only when predefined conditions are met. Execution may be attempted multiple times, but can only succeed once, and only within valid execution windows — deterministic and on-chain.

Transparent and verifiable

All authorization and execution logic lives on-chain. Anyone can verify what is allowed, when it executes, and why.

Transparent and verifiable

All authorization and execution logic lives on-chain. Anyone can verify what is allowed, when it executes, and why.

Deterministic execution

Actions execute only when predefined conditions are met. Execution may be attempted multiple times, but can only succeed once, and only within valid execution windows — deterministic and on-chain.

Deterministic execution

Actions execute only when predefined conditions are met. Execution may be attempted multiple times, but can only succeed once, and only within valid execution windows — deterministic and on-chain.

Non-custodial by design

Funds never sit in an amser wallet.

Non-custodial by design

Funds never sit in an amser wallet.

Time-bound authorization

Permissions include explicit limits and expiry.

Time-bound authorization

Permissions include explicit limits and expiry.

Deterministic execution windows

Executions happen only within defined windows.

Transparent and verifiable

Rules and state can be inspected and indexed.

No unlimited approvals. Users set a cap. You bill within it.

Built for developers

Predictable primitives for subscriptions and just in time execution.
Explicit state, clear failure modes, and clean indexing.

Clear, composable primitives with no hidden flows
Predictable behavior under retries, failures, and edge cases
On-chain authority with off-chain liveness support
Consistent guarantees across every execution path

Developers can rely on this behavior across all execution paths.

Email Address

hello@amser.io

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