Teller

Teller is a unified banking API providing real-time access to bank accounts, transactions, balances, identity data, and payment initiation across US financial institutions. Connect to thousands of banks and credit unions through a single integration. Teller uses mutual TLS (mTLS) for application authentication and access tokens obtained via Teller Connect for per-account authorization.

1 APIs 0 Features

BankingFinancial DataFinTechOpen BankingTransactionsUnified API

APIs

Teller API

Unified banking API for real-time access to accounts, transactions, balances, and identity data across US financial institutions. Supports account management, transaction histor...

Event Specifications

Teller Webhooks

AsyncAPI specification describing Teller's outbound webhook surface. Teller sends signed HTTPS POST callbacks to a developer-configured endpoint when notable events occur on enr...

ASYNCAPI

Semantic Vocabularies

Teller Context

2 classes · 7 properties

JSON-LD

API Governance Rules

Teller API Rules

12 rules · 7 errors 5 warnings

SPECTRAL

Resources

GitHubOrganization

Sources

aid: teller
name: Teller
description: >-
  Teller is a unified banking API providing real-time access to bank accounts, transactions, balances, identity data,
  and payment initiation across US financial institutions. Connect to thousands of banks and credit unions through a
  single integration. Teller uses mutual TLS (mTLS) for application authentication and access tokens obtained via Teller
  Connect for per-account authorization.
url: https://raw.githubusercontent.com/api-evangelist/teller/refs/heads/main/apis.yml
modified: '2026-05-30'
specificationVersion: '0.19'
tags:
  - Banking
  - Financial Data
  - FinTech
  - Open Banking
  - Transactions
  - Unified API
apis:
  - aid: teller:teller-api
    name: Teller API
    description: >-
      Unified banking API for real-time access to accounts, transactions, balances, and identity data across US
      financial institutions. Supports account management, transaction history, balance retrieval, and account holder
      identity verification via a single REST API secured with mTLS and per-user access tokens.
    humanURL: https://teller.io/docs/api
    baseURL: https://api.teller.io
    tags:
      - Accounts
      - Balance
      - Banking
      - Financial Data
      - Identity
      - Open Banking
      - Transactions
    properties:
      - type: Documentation
        url: https://teller.io/docs/api
      - type: OpenAPI
        url: openapi/teller-openapi.yml
      - type: AsyncAPI
        url: asyncapi/teller-webhooks-asyncapi.yml
      - type: GettingStarted
        url: https://teller.io/docs/guides/quickstart
      - type: Authentication
        url: https://teller.io/docs/api/authentication
      - type: SDK
        url: https://teller.io/docs/guides/sdks
common:
  - type: LinkedIn
    url: https://www.linkedin.com/company/hello-teller
  - type: Website
    url: https://teller.io/
  - type: Documentation
    url: https://teller.io/docs
  - type: Developer Portal
    url: https://teller.io/docs/api
  - type: GitHubOrganization
    url: https://github.com/tellerhq
  - type: SDK
    url: https://github.com/tellerhq/teller-ruby
  - type: SDK
    url: https://github.com/tellerhq/teller-connect-react
  - type: SDK
    url: https://github.com/tellerhq/iOS-SDK
  - type: SDK
    url: https://github.com/tellerhq/teller-connect-android
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com