> ## Documentation Index > Fetch the complete documentation index at: https://docs.crypto.westminister.tech/llms.txt > Use this file to discover all available pages before exploring further. # Cancel Negotiated FX Reference (Treasury) ## OpenAPI ````yaml /openapi.yaml post /api/v1/auth/otc/negotiated-fx/references/{id}/cancel openapi: 3.1.0 info: title: CoinPool API description: > CoinPool API reference. These APIs power cryptocurrency exchange between USDT and Fiat trading. - **On-Ramp**: Buy USDT with fiat (KES) via mobile money (STK Push for Kenya) - **Off-Ramp**: Sell USDT for KES with mobile money payout (Kenya) - **Ethereum and TRON**: Multi-chain wallet support - **Merchant Offers**: Create and manage trading offers - **OTC Flows**: Bank and mobile money deposits/withdrawals for merchants - **Pricing engine**: FX quotes and fee profiles for quote-backed orders and transfers - **P2P/B2B transfers**: Internal and external stablecoin sends (USDT/USDC) with optional pricing snapshots - **Stablecoin swaps**: Custodial USDT ↔ USDC conversion on the platform ledger (same wallet. Optional spread via `STABLECOIN_SWAP_FEE_BPS`) - **Multisig**: Collaborative and platform-managed multisig flows for high-value B2B version: 1.1.0 servers: - url: https://crypto.westminister.tech description: Production API (requires DNS for this hostname). - url: http://13.42.110.185:8080 description: >- UAT on EC2 (direct). Use this base when building proof PDF URLs if the production hostname does not resolve. security: [] tags: - name: Pricing description: >- Commercial pricing profiles and FX rate quotes (admin). Used with orders and transfers for auditable snapshots. - name: Transfers description: >- P2P and B2B stablecoin transfers (USDT/USDC). Optional fiat-equivalent pricing fields. B2B multisig behavior depends on wallet registration (synchronous completion vs proposal flow). - name: Stablecoin Swaps description: >- Custodial USDT ↔ USDC ledger swaps for the authenticated user (same wallet on `tron` or `ethereum`). Does not broadcast on-chain. Balances reflect app ledger until you sync from chain. - name: Multisig description: >- Multisig wallet registration and TRON proposal/confirm flows (vendor/admin). - name: Escrow Wallets description: Escrow pool wallet metadata for off-ramp and operations. - name: Users description: >- User-related operations (registration, lookup, updates, counts, status changes) - name: Wallets-Users description: User wallet operations (create, manage, query balances) - name: Offers description: Offer operations (create, read, list, counts) - name: Orders description: Order operations (create, update, list, counts, stats) - name: Payment description: Payment initiation operations - name: Merchants description: > Merchant (vendor) onboarding and hierarchy operations. USE **GET /API/V1/AUTH/MERCHANTS** WITH **PAGE_ID** AND **PAGE_SIZE** TO PAGE MASTER VENDORS. USE **GET /API/V1/AUTH/MERCHANTS/{MERCHANT_ID}** FOR ONE MASTER VENDOR, **MERCHANT_WALLETS**, AND ALL **SUBVENDOR** ROWS WITH **WALLETS** (FULL TREE). - name: OTC Deposits description: > OTC fiat-to-crypto deposits (bank or mobile money). Rows live in **`otc_deposits`**. Merchants create drafts or one-shot deposits. **admin**, **otc_officer**, or **treasury** list all deposits. B2B bank flow uses draft, quote, submit, proof, assign, claim, settlement, and audit. **`credited_to_address`** is the merchant on-chain wallet treasury credits (resolved from the default wallet for **`requested_network`** on the master merchant ledger user or any **sub-vendor** under that merchant). **`GET /api/v1/auth/otc/deposits`** backfills missing **`credited_to_address`**/**`to_wallet_id`** when a wallet can be resolved. One-shot **`POST /api/v1/auth/otc/deposits`** persists the payout address when **`requested_network`** is sent. Bank proof PDFs upload via `POST .../proof` and are viewed at **`GET /otc-deposits-proof/{deposit_id}/{file}.pdf`** (relative **`proof_url`**/**`file_url`** plus API base URL). Merchants may edit tab-1 draft fields with **`PATCH /api/v1/auth/otc/deposits/{id}/draft`** while **`status`** is **`draft`**. - name: OTC Withdrawals description: >- OTC crypto-to-fiat withdrawals (bank or mobile money). Merchants create. Admin approves and executes. - name: OTC Config description: OTC display config (bank details, mobile money paybill) for merchant UI - name: Fiat Currencies description: > Shared platform **fiat_currencies** catalog. **GET /api/v1/auth/fiat-currencies** lists active rows for UI pickers. **GET /api/v1/auth/fiat-currencies/admin** lists all rows including inactive (admin). Admin manages rows with **GET /api/v1/auth/fiat-currencies/{id}**, **POST /api/v1/auth/fiat-currencies**, **PATCH /api/v1/auth/fiat-currencies/{id}**, and **DELETE /api/v1/auth/fiat-currencies/{id}**. Use for OTC, pricing, orders, remittance, and backoffice — not under **`/otc/...`**. Prefer **PATCH** with **`is_active: false`** over delete when a currency is referenced. - name: Countries description: >- Shared platform **countries** catalog. Public **GET /api/v1/countries** lists active rows for pickers. Auth **GET /api/v1/auth/countries** returns the same active catalog. Admin manages rows with **GET /api/v1/auth/countries/admin**, **GET /api/v1/auth/countries/{id}**, **POST /api/v1/auth/countries**, **PATCH /api/v1/auth/countries/{id}**, and **DELETE /api/v1/auth/countries/{id}**. - name: Files description: Authenticated file uploads for OTC receipts and proof artifacts. paths: /api/v1/auth/otc/negotiated-fx/references/{id}/cancel: post: tags: - OTC Deposits summary: Cancel Negotiated FX Reference (Treasury) parameters: - name: id in: path required: true schema: type: string format: uuid responses: '200': description: Cancelled content: application/json: schema: type: object properties: reference: $ref: '#/components/schemas/OtcNegotiatedFxReference' '409': description: Not active security: - bearerAuth: [] components: schemas: OtcNegotiatedFxReference: type: object properties: id: type: string format: uuid reference_code: type: string merchant_id: type: string format: uuid merchant_display_name: type: string otc_type: type: string enum: - deposit - withdrawal agreed_transaction_date: type: string format: date timezone: type: string description: IANA timezone used for same-day expiry expires_at: type: string format: date-time asset: type: string fiat_currency: type: string network: type: string nullable: true amount_type: type: string enum: - fiat - crypto agreed_amount: type: string reference_fx_rate: type: string agreed_fx_rate: type: string narration: type: string nullable: true pricing_profile_id: type: string format: uuid nullable: true created_by_user_id: type: string format: uuid created_by_display_name: type: string status: type: string enum: - active - consumed - expired - cancelled consumed_at: type: string format: date-time nullable: true consumed_otc_deposit_id: type: string format: uuid nullable: true gross_fiat_amount: type: string description: Preview only on GET gross_crypto_amount: type: string description: Preview only on GET net_fiat_amount: type: string description: Preview only on GET net_crypto_amount: type: string description: Preview only on GET total_fee_amount: type: string description: Preview only on GET fee_currency: type: string description: Preview only on GET created_at: type: string format: date-time updated_at: type: string format: date-time securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: PASETO ````