> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mag3nt.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List all live CRT Uniswap V4 markets



## OpenAPI

````yaml /openapi.yaml get /api/crt-markets
openapi: 3.1.0
info:
  title: mag3nt API
  version: '2026-07-16'
  description: >
    Payment infrastructure for AI agents. Issue virtual cards backed by
    credentials, pay for API access via x402/AP2/MPP protocols, and settle in
    USDC on Base. Also covers Native Token Rails membership and recurring
    billing agreements, ERC-20 project token registration (including B20) and
    prepaid MAG3NT fee metering for DIRECT (non-custodial) settlement, the
    credential marketplace and Credential Token (CT) markets, account-wide token
    holdings, and signed webhooks for payment and subscription lifecycle events.
  contact:
    name: mag3nt
    url: https://mag3nt.com
  license:
    name: Proprietary
    url: https://github.com/mag3nt-com/mag3nt-node/blob/main/LICENSE
servers:
  - url: https://mag3nt.com
    description: Production
  - url: https://staging.mag3nt.com
    description: Staging, Base mainnet
security:
  - ApiKeyAuth: []
tags:
  - name: Payments
    description: Universal outbound protocol payments
  - name: Cards
    description: Virtual payment card lifecycle
  - name: Keys
    description: Developer API key management
  - name: Funding
    description: Treasury deposits and balances
  - name: x402
    description: HTTP 402 payment protocol
  - name: AP2
    description: Agent-to-Agent Payment Protocol
  - name: MPP
    description: Micropayment Protocol with streaming
  - name: Pay Links
    description: Shareable payment URLs
  - name: Withdrawals
    description: Withdraw unspent funds back to wallet
  - name: Settlement
    description: On-chain settlement status
  - name: Webhooks
    description: Signed payment and subscription lifecycle notifications for sellers
  - name: Status
    description: System health and configuration
  - name: Membership
    description: Native Token Rails membership tiers, checkout, and auto-renew
  - name: Billing
    description: Recurring billing agreements funded by AP2 open mandates
  - name: Tokens
    description: >-
      Register an ERC-20 contract (including B20 tokens) for DIRECT credential
      settlement
  - name: Fees
    description: Prepaid MAG3NT fee meter for DIRECT settlement overage
  - name: Marketplace
    description: >-
      List and transfer credential businesses (proof of record) on the mag3nt
      marketplace
  - name: Credential Tokens
    description: Credential Token (CT) launch and Uniswap V4 markets
  - name: Holdings
    description: Account-wide Credential Token balances
externalDocs:
  description: mag3nt documentation
  url: https://docs.mag3nt.com
paths:
  /api/crt-markets:
    get:
      tags:
        - Credential Tokens
      summary: List all live CRT Uniswap V4 markets
      operationId: credentialTokensListMarkets
      parameters:
        - name: chainId
          in: query
          schema:
            type: integer
          description: >-
            Must match this deployment's configured CRT V4 chain, or the request
            is rejected.
      responses:
        '200':
          description: Live markets
          content:
            application/json:
              schema:
                type: object
                properties:
                  chainId:
                    type: integer
                  markets:
                    type: array
                    items:
                      type: object
                      properties:
                        cardId:
                          type: string
                        token:
                          type: string
                        symbol:
                          type: string
                        name:
                          type: string
                        supply:
                          type: number
                        decimals:
                          type: integer
                        poolId:
                          type: string
                        deployTx:
                          type:
                            - string
                            - 'null'
                        listTx:
                          type:
                            - string
                            - 'null'
                        creator:
                          type: string
                        listedAt:
                          type:
                            - string
                            - 'null'
                          format: date-time
        '400':
          description: chainId does not match this deployment
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  chainId:
                    type: integer
      security: []
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: API key prefixed with 'Bearer sx_live_...'

````