Q2

Helix by Q2 API

The Helix by Q2 REST API lets developers incorporate real FDIC-insured savings and/or checking accounts into their applications, including accounts, customers (individual and business), cards, card controls, external accounts, transfers, ACH, wires, transactions, statements, fees, and programs. Authentication is HTTP Basic (API Key + Secret). A real-time Events Bus delivers account, card, check, and fraud events. JSON only.

GitHub

Documentation

📖
Documentation
https://docs.helix.q2.com
📖
APIReference
https://docs.helix.q2.com/reference
📖
Quickstart
https://docs.helix.q2.com/reference/quickstart
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/authentication/q2-authentication.yml
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/rate-limits/q2-rate-limits.yml

Other Resources

🔗
ErrorCatalog
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/errors/q2-error-codes.yml
🔗
Sandbox
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/sandbox/q2-sandbox.yml
🔗
Conventions
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/conventions/q2-conventions.yml
🔗
Lifecycle
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/lifecycle/q2-lifecycle.yml
🔗
DataModel
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/data-model/q2-data-model.yml
🔗
Conformance
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/conformance/q2-conformance.yml
🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/asyncapi/q2-events-webhooks.yml
🔗
X-MCPServerCandidate
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/mcp/q2-mcp.yml
🔗
LLMsTxt
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/llms/q2-llms.txt
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/q2/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
name: Helix by Q2 API
description: The Helix by Q2 REST API lets developers incorporate real FDIC-insured savings and/or checking
  accounts into their applications, including accounts, customers (individual and business), cards, card
  controls, external accounts, transfers, ACH, wires, transactions, statements, fees, and programs. Authentication
  is HTTP Basic (API Key + Secret). A real-time Events Bus delivers account, card, check, and fraud events.
  JSON only.
humanURL: https://docs.helix.q2.com
baseURL: https://api.helix.q2.com
tags:
- Banking
- Embedded Finance
- Account
- Cards
- ACH
- Transfers
tags_raw:
- Banking
- Embedded Finance
- Accounts
- Cards
- ACH
- Transfers
properties:
- type: Documentation
  url: https://docs.helix.q2.com
- type: APIReference
  url: https://docs.helix.q2.com/reference
- type: Quickstart
  url: https://docs.helix.q2.com/reference/quickstart
- type: Authentication
  url: authentication/q2-authentication.yml
- type: RateLimits
  url: rate-limits/q2-rate-limits.yml
- type: ErrorCatalog
  url: errors/q2-error-codes.yml
- type: Sandbox
  url: sandbox/q2-sandbox.yml
- type: Conventions
  url: conventions/q2-conventions.yml
- type: Lifecycle
  url: lifecycle/q2-lifecycle.yml
- type: DataModel
  url: data-model/q2-data-model.yml
- type: Conformance
  url: conformance/q2-conformance.yml
- type: Webhooks
  url: asyncapi/q2-events-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/q2-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate
    — a tool list derived from the published API contracts, not an existing server. The scorer already
    read the manifest and reported mcp_server correctly; the MCPServer type was crediting the artifact-type
    surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/q2-llms.txt