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OpenAPI Specification

openapi: 3.2.0
info:
  title: tZERO Institutional API Documents Dividends API
  description: '## Overview


    The **tZERO Institutional API** — programmatic access to transfer-agent, tokenization, and custody operations for institutional issuers and partners.'
  version: 1.1.0
  contact:
    name: T0kenizer API Support
    email: api@t0direct.com
servers:
- url: https://api.t0direct.com
  description: Production
security:
- ApiKeyAuth: []
tags:
- name: Dividends
  description: Dividend declarations (cash & stock) — review-gated; on-chain execution via the dividend claim contract
paths:
  /api/v1/dividends/:
    get:
      summary: List dividends
      tags:
      - Dividends
      description: All dividends for the issuer bound to the API key, newest first.
      responses:
        '200':
          description: Default Response
      operationId: getApiV1Dividends
      x-operation-id-source: derived
    post:
      summary: Declare a dividend (enters tZERO review)
      tags:
      - Dividends
      description: Creates the dividend in PENDING_REVIEW. A tZERO transfer-agent reviewer approves or rejects it under a Rule 17Ad-2 SLA timer; status changes are delivered via ta.dividend.* webhooks. Requires an Idempotency-Key header.
      responses:
        '200':
          description: Default Response
      operationId: postApiV1Dividends
      x-operation-id-source: derived
  /api/v1/dividends/{id}:
    get:
      summary: Get a dividend with payment rollups
      tags:
      - Dividends
      parameters:
      - schema:
          type: string
        in: path
        name: id
        required: true
      responses:
        '200':
          description: Default Response
      operationId: getApiV1DividendsById
      x-operation-id-source: derived
  /api/v1/dividends/{id}/funding:
    get:
      summary: Get USDC funding deposit instructions for a CASH dividend
      tags:
      - Dividends
      description: After a CASH dividend is approved and frozen, returns where and how much USDC to deposit. `requiredBaseUnits` is the ON-CHAIN cash the pool needs — it EXCLUDES holders who elected reinvestment (DRIP, retained by the fund) or off-chain clearing, so it can be less than the declared total. Fund this exact amount to the deposit address; overfunding is held as a refund.
      parameters:
      - schema:
          type: string
        in: path
        name: id
        required: true
      responses:
        '200':
          description: Default Response
      operationId: getApiV1DividendsByIdFunding
      x-operation-id-source: derived
  /api/v1/dividends/{id}/reconciliation:
    get:
      summary: 'Reconcile a dividend: declared vs distributed'
      tags:
      - Dividends
      description: Proves every declared base unit is accounted for across payout modes (USDC paid, reinvested cost, reinvest residual, clearing-settled), with no drift and no open/failed entitlements. `reconciled:true` means the dividend is fully and correctly distributed.
      parameters:
      - schema:
          type: string
        in: path
        name: id
        required: true
      responses:
        '200':
          description: Default Response
      operationId: getApiV1DividendsByIdReconciliation
      x-operation-id-source: derived
  /api/v1/dividends/payment-tokens:
    get:
      summary: List approved payment tokens for a security
      tags:
      - Dividends
      description: The allowlisted tokens (per the USDC-only policy) accepted as dividendTokenAddress for on-chain CASH dividends on the security's chain and network.
      responses:
        '200':
          description: Default Response
      operationId: getApiV1DividendsPaymentTokens
      x-operation-id-source: derived
  /api/v1/dividends/{id}/cancel:
    post:
      summary: Cancel a dividend
      tags:
      - Dividends
      description: 'PENDING_REVIEW: withdrawn before review. DECLARED (not yet executed): cancelled. Executed on-chain dividends must be cancelled by the transfer agent (claim-contract cancellation) — contact tZERO. Requires Idempotency-Key.'
      parameters:
      - schema:
          type: string
        in: path
        name: id
        required: true
      responses:
        '200':
          description: Default Response
      operationId: postApiV1DividendsByIdCancel
      x-operation-id-source: derived
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key generated at app.t0kenizer.com/ta/api-keys