Caisse sans gaz

Sponsor supported token checkout fees only where the token and route allow it.

La délégation de frais permet aux commerçants de configurer des politiques de frais sponsorisés pour les flux de jetons basés sur des permis pris en charge. Les jetons non pris en charge reviennent au paiement normal du portefeuille.

0.5%frais de passerelle forfaitaires
16 Proofsoperational explainers
Pas de gardedirect multisig & vault routing
Réseau de Test (Testnet)avant l'examen du réseau principal
Direct answer

Fee Delegation is a policy and execution model for supported gasless token payments. It requires merchant policy activation, a compatible deployed router, relayer configuration, and a token that supports permit-style approvals.

01

Merchant enables fee delegation policy and limits.

02

Checkout detects whether the selected token supports the required approval flow.

03

Supported payments use the gasless route and relayer policy.

04

Unsupported tokens use the normal wallet transaction path.

Who pays gas?

Sponsored gas is paid by the configured relayer or policy wallet. If the token is not supported, the payer uses the standard wallet gas flow.

Operational limit

Fee Delegation is not universal gasless crypto. It only applies to supported token, route, contract, and policy combinations.

FAQ

What problem does this XPayr flow solve?

Fee Delegation is a policy and execution model for supported gasless token payments. It requires merchant policy activation, a compatible deployed router, relayer configuration, and a token that supports permit-style approvals.

Who pays gas or network fees?

Sponsored gas is paid by the configured relayer or policy wallet. If the token is not supported, the payer uses the standard wallet gas flow.

What should merchants not assume?

Fee Delegation is not universal gasless crypto. It only applies to supported token, route, contract, and policy combinations.

Verifiable Open-Source & AI Protocol Registry

Publicly auditable SDKs, cryptographic evidence envelopes, and MCP registries.

Anthropic MCP Registry & NPM

Serveur MCP Officiel à 21 Outils

Registered as io.github.xpayrcom/xpayr-mcp-server on the Official Anthropic MCP Registry and published as @xpayr/mcp-server on NPM and ghcr.io/xpayrcom/xpayr-mcp-server:latest.

Open MCP Portal (mcp.xpayr.com)
Cryptographic Proof & Kit de Licences

Merkle Payment Evidence & ES256 Tokens

Verify on-chain settlement envelopes with @xpayr/payment-evidence and offline-verifiable ES256 wallet licenses with @xpayr/extension-kit.

Open Docs Hub (docs.xpayr.com)
OpenAPI 3.1.0 & Security Policy

30 Open-Source Repositories & RFC 9116

Inspect all 20 REST API v1 schemas interactively at api-docs.xpayr.com, review our 30 repositories at github.com/xpayrcom, and check /.well-known/security.txt & /.well-known/jwks.json.

Open API Playground (api-docs.xpayr.com)

Besoin de prouver le débit avant la production ?

Utilisez la vérification testnet, les documents API, les guides webhook et les explications opérationnelles avant de demander l'activation du réseau principal.