> ## Documentation Index > Fetch the complete documentation index at: https://docs.stabyl.com/llms.txt > Use this file to discover all available pages before exploring further. # Get CNGN conversion capacity > Returns platform-wide NGN conversion capacity with status and observation time. Requires wallets:view. This snapshot does not reserve capacity or guarantee immediate conversion for a subsequent deposit. Eligible deposits receive capacity automatically in FIFO order. Returns 503 when a current snapshot is unavailable. See the [NGN currency guide](/docs/currencies/ngn.md#cngn) for deposits, conversion capacity, withdrawal limits, and `conversion.updated` webhook handling. ## OpenAPI ````yaml /openapi/openapi.json get /partner/wallets/rails/{rail}/pool openapi: 3.1.0 info: contact: email: support@stabyl.com name: Stabyl Support description: >- REST API for approved Stabyl accounts to automate exchange, wallet, and non-production simulation workflows. license: name: Proprietary title: Stabyl API version: 1.0.0 servers: - description: Production url: https://api.stabyl.com/v1 - description: Staging url: https://api-staging.stabyl.com/v1 security: [] tags: - description: Trading market data and order management for account automation. name: Exchange - description: >- Supported routes, deposit destinations, balances, transactions, and saved recipients. name: Wallets - description: >- Outbound event delivery configuration and eventually consistent delivery history. Verify Standard Webhooks webhook-id, webhook-timestamp, and webhook-signature headers against the unchanged raw request body before parsing JSON. name: Webhooks - description: Non-production endpoints for testing integration behavior. name: Simulation paths: /partner/wallets/rails/{rail}/pool: get: tags: - Wallets summary: Get CNGN conversion capacity description: >- Returns platform-wide NGN conversion capacity with status and observation time. Requires wallets:view. This snapshot does not reserve capacity or guarantee immediate conversion for a subsequent deposit. Eligible deposits receive capacity automatically in FIFO order. Returns 503 when a current snapshot is unavailable. operationId: get_partner_wallets_rails_rail_pool parameters: - description: Settlement rail, case-insensitive. Only CNGN is supported. example: CNGN in: path name: rail required: true schema: type: string responses: '200': content: application/json: example: data: as_of: '2026-10-20T12:00:00Z' available: '50000000.00' cap: '500000000.00' currency: NGN rail: CNGN status: available utilized: '450000000.00' status: success schema: properties: data: $ref: '#/components/schemas/CngnPoolResponse' status: enum: - success type: string required: - status - data type: object description: Current conversion capacity '401': content: application/json: example: error: code: UNAUTHORIZED message: missing X-Api-Key header status: error schema: properties: error: properties: code: example: UNAUTHORIZED type: string message: example: missing X-Api-Key header type: string required: - code - message type: object status: enum: - error type: string required: - status - error type: object description: API key required '403': content: application/json: example: error: code: FORBIDDEN message: request is not allowed status: error schema: properties: error: properties: code: example: FORBIDDEN type: string message: example: request is not allowed type: string required: - code - message type: object status: enum: - error type: string required: - status - error type: object description: Missing wallets:view scope '404': content: application/json: example: error: code: NOT_FOUND message: resource not found status: error schema: properties: error: properties: code: example: NOT_FOUND type: string message: example: resource not found type: string required: - code - message type: object status: enum: - error type: string required: - status - error type: object description: Pool not available for this rail '503': content: application/json: example: error: code: SERVICE_UNAVAILABLE message: service unavailable status: error schema: properties: error: properties: code: example: SERVICE_UNAVAILABLE type: string message: example: service unavailable type: string required: - code - message type: object status: enum: - error type: string required: - status - error type: object description: Current capacity temporarily unavailable security: - api_key: [] components: schemas: CngnPoolResponse: properties: as_of: description: Time the capacity snapshot was observed. format: date-time type: string available: description: >- Uncommitted capacity. This is not an account balance or a reservation. type: string cap: description: Total conversion capacity, as a decimal wallet-currency string. type: string currency: description: Wallet currency in which all capacity amounts are denominated. type: string rail: description: Origin settlement rail, for example CNGN. type: string status: description: >- available, exhausted, or paused. A positive amount during paused status does not mean conversions can proceed. type: string utilized: description: Capacity used or already committed to conversions. type: string required: - rail - currency - cap - utilized - available - status - as_of type: object securitySchemes: api_key: description: >- API credential. Withdrawal quote and submit operations additionally require the documented Ed25519 timestamp, nonce, and signature headers. in: header name: X-Api-Key type: apiKey x-default: sb_test_your_key ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.