> ## Documentation Index
> Fetch the complete documentation index at: https://docs.limitguard.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Settle Payment

> Co-sign and broadcast a payment transaction.

Accepts x402 spec request format:
  - paymentPayload: base64-encoded PaymentPayload (PAYMENT-SIGNATURE header value)
  - paymentRequirements: PaymentRequirements object (from PAYMENT-REQUIRED header)

Also accepts legacy format:
  - payload: PaymentPayload JSON
  - raw_transaction: base64 partially-signed Solana VersionedTransaction

For EVM payments, triggers settlement via on_chain_settlement.settle_evm_payment.
Returns SettlementResponse-compatible JSON.



## OpenAPI

````yaml /api-reference/openapi.json post /x402/settle
openapi: 3.1.0
info:
  title: LimitGuard.ai
  description: Trust Intelligence API - Entity verification and risk scoring
  version: 0.1.0
servers:
  - url: https://api.limitguard.ai
security: []
paths:
  /x402/settle:
    post:
      tags:
        - x402
      summary: Settle Payment
      description: >-
        Co-sign and broadcast a payment transaction.


        Accepts x402 spec request format:
          - paymentPayload: base64-encoded PaymentPayload (PAYMENT-SIGNATURE header value)
          - paymentRequirements: PaymentRequirements object (from PAYMENT-REQUIRED header)

        Also accepts legacy format:
          - payload: PaymentPayload JSON
          - raw_transaction: base64 partially-signed Solana VersionedTransaction

        For EVM payments, triggers settlement via
        on_chain_settlement.settle_evm_payment.

        Returns SettlementResponse-compatible JSON.
      operationId: settle_payment_x402_settle_post
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}

````