Teller Open Banking

naftiko: 1.0.0-alpha2
info:
  label: Teller Open Banking
  description: Unified open banking workflow combining account management, transaction history, balance monitoring, and identity
    verification through the Teller API. Enables fintech applications, personal finance tools, and lending platforms to access
    real-time financial data across US banks and credit unions.
  tags:
  - Accounts
  - Banking
  - Financial Data
  - FinTech
  - Identity Verification
  - Open Banking
  - Teller
  - Transactions
  created: '2026-05-03'
  modified: '2026-05-06'
binds:
- namespace: env
  keys:
    TELLER_ACCESS_TOKEN: TELLER_ACCESS_TOKEN
capability:
  consumes:
  - type: http
    namespace: teller
    baseUri: https://api.teller.io
    description: Teller unified banking API for real-time financial data access.
    authentication:
      type: bearer
      token: '{{TELLER_ACCESS_TOKEN}}'
    resources:
    - name: identity
      path: /identity
      description: Account holder identity information
      operations:
      - name: list-identity
        method: GET
        description: List accounts with owner identity information attached
        inputParameters: []
        outputRawFormat: json
        outputParameters:
        - name: result
          type: array
          value: $.
    - name: accounts
      path: /accounts
      description: Bank account management
      operations:
      - name: list-accounts
        method: GET
        description: List all authorized bank accounts
        inputParameters: []
        outputRawFormat: json
        outputParameters:
        - name: result
          type: array
          value: $.
      - name: get-account
        method: GET
        description: Get a single bank account by ID
        inputParameters:
        - name: account_id
          in: path
          type: string
          required: true
          description: Account identifier
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
      - name: get-account-details
        method: GET
        description: Get account routing and account numbers
        inputParameters:
        - name: account_id
          in: path
          type: string
          required: true
          description: Account identifier
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
      - name: get-account-balances
        method: GET
        description: Get current available and ledger balances
        inputParameters:
        - name: account_id
          in: path
          type: string
          required: true
          description: Account identifier
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: transactions
      path: /accounts/{account_id}/transactions
      description: Account transaction history
      operations:
      - name: list-transactions
        method: GET
        description: List transactions for an account with optional date filtering
        inputParameters:
        - name: account_id
          in: path
          type: string
          required: true
          description: Account identifier
        - name: count
          in: query
          type: integer
          required: false
          description: Maximum transactions to return
        - name: from_id
          in: query
          type: string
          required: false
          description: Paginate backward from this transaction ID
        - name: start_date
          in: query
          type: string
          required: false
          description: Filter from this ISO 8601 date
        - name: end_date
          in: query
          type: string
          required: false
          description: Filter to this ISO 8601 date
        outputRawFormat: json
        outputParameters:
        - name: result
          type: array
          value: $.
      - name: get-transaction
        method: GET
        description: Get a single transaction by ID
        inputParameters:
        - name: account_id
          in: path
          type: string
          required: true
          description: Account identifier
        - name: transaction_id
          in: path
          type: string
          required: true
          description: Transaction identifier
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
    - name: institutions
      path: /institutions
      description: Supported financial institutions
      operations:
      - name: list-institutions
        method: GET
        description: List all supported financial institutions and their available products
        inputParameters: []
        outputRawFormat: json
        outputParameters:
        - name: result
          type: array
          value: $.
  exposes:
  - type: rest
    port: 8080
    namespace: teller-open-banking-api
    description: Unified REST API for open banking data access including accounts, balances, transactions, and identity across
      US financial institutions.
    resources:
    - path: /v1/identity
      name: identity
      description: Account holder identity and ownership information
      operations:
      - method: GET
        name: list-identity
        description: List accounts with beneficial owner identity information
        call: teller.list-identity
        outputParameters:
        - type: array
          mapping: $.
    - path: /v1/accounts
      name: accounts
      description: Bank accounts accessible via the current enrollment
      operations:
      - method: GET
        name: list-accounts
        description: List all authorized bank accounts
        call: teller.list-accounts
        outputParameters:
        - type: array
          mapping: $.
    - path: /v1/accounts/{account_id}
      name: account
      description: Single bank account resource
      operations:
      - method: GET
        name: get-account
        description: Get a bank account by ID
        call: teller.get-account
        with:
          account_id: rest.account_id
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/accounts/{account_id}/details
      name: account-details
      description: Sensitive account number and routing details
      operations:
      - method: GET
        name: get-account-details
        description: Get routing number and account number
        call: teller.get-account-details
        with:
          account_id: rest.account_id
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/accounts/{account_id}/balances
      name: account-balances
      description: Real-time account balance data
      operations:
      - method: GET
        name: get-account-balances
        description: Get available and ledger balances
        call: teller.get-account-balances
        with:
          account_id: rest.account_id
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/accounts/{account_id}/transactions
      name: transactions
      description: Transaction history for a bank account
      operations:
      - method: GET
        name: list-transactions
        description: List transactions with optional date filtering and pagination
        call: teller.list-transactions
        with:
          account_id: rest.account_id
          count: rest.count
          start_date: rest.start_date
          end_date: rest.end_date
        outputParameters:
        - type: array
          mapping: $.
    - path: /v1/accounts/{account_id}/transactions/{transaction_id}
      name: transaction
      description: Single transaction record
      operations:
      - method: GET
        name: get-transaction
        description: Get a transaction by ID
        call: teller.get-transaction
        with:
          account_id: rest.account_id
          transaction_id: rest.transaction_id
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/institutions
      name: institutions
      description: Supported financial institutions
      operations:
      - method: GET
        name: list-institutions
        description: List all supported banks and credit unions
        call: teller.list-institutions
        outputParameters:
        - type: array
          mapping: $.
  - type: mcp
    port: 9090
    namespace: teller-open-banking-mcp
    transport: http
    description: MCP server for AI-assisted open banking data access and financial analysis across US banks and credit unions
      via Teller.
    tools:
    - name: list-identity
      description: List bank accounts with beneficial owner identity information
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.list-identity
      outputParameters:
      - type: array
        mapping: $.
    - name: list-accounts
      description: List all bank accounts authorized in the current Teller enrollment
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.list-accounts
      outputParameters:
      - type: array
        mapping: $.
    - name: get-account
      description: Get details for a specific bank account
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.get-account
      with:
        account_id: tools.account_id
      outputParameters:
      - type: object
        mapping: $.
    - name: get-account-details
      description: Get routing number and full account number for a bank account
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.get-account-details
      with:
        account_id: tools.account_id
      outputParameters:
      - type: object
        mapping: $.
    - name: get-account-balances
      description: Get real-time available and ledger balances for a bank account
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.get-account-balances
      with:
        account_id: tools.account_id
      outputParameters:
      - type: object
        mapping: $.
    - name: list-transactions
      description: List transactions for a bank account with date range filtering
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.list-transactions
      with:
        account_id: tools.account_id
        count: tools.count
        start_date: tools.start_date
        end_date: tools.end_date
      outputParameters:
      - type: array
        mapping: $.
    - name: get-transaction
      description: Get a specific transaction record by ID
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.get-transaction
      with:
        account_id: tools.account_id
        transaction_id: tools.transaction_id
      outputParameters:
      - type: object
        mapping: $.
    - name: list-supported-institutions
      description: List all US financial institutions supported by Teller
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: teller.list-institutions
      outputParameters:
      - type: array
        mapping: $.