FiniiAPI — Developer Platform
Connect FiniiOne to your store, your accounting — even your AI assistant
One secure API for inventory, invoicing, payments and KYC verification. Ready-made connectors for Zoho Books, TallyPrime, Claude and ChatGPT. Your data stays yours — every key is scoped to your account only.
What you can do with the API
Inventory & stock
List phones, add stock in bulk (up to 100 at once), and look up any device by item number, IMEI or barcode.
Atomic reservations
Reserve a device for 15 minutes while your customer checks out — no double-selling across channels. Confirm or release the hold.
Invoices & credit notes
Raise margin-scheme (Rule 32(5)) or regular GST invoices in your official series, fetch the PDF, cancel unused invoices and issue credit notes that restock devices automatically.
Payments & collections
Record payments against invoices (UPI, cash, bank transfer, gateway) and track balances owed.
FiniiVerify KYC
Run GST, PAN, bank account, CIN, Udyam and 6 other verification checks over the same API.
Webhooks
Get instant, HMAC-signed alerts when stock or invoices change — no polling needed.
Connects to the tools you already use
Including AI assistants — ask Claude or ChatGPT "What are my receivables?" and get answers from your live FiniiOne data, read-only.
Claude & ChatGPT
Ask your business questions in plain language. Connect Claude with one link (finii.one/mcp?key=YOUR_KEY) or import our OpenAPI file into a custom GPT. AI assistants get read-only figures — they can never change your data.
Zoho Books
Export invoices and payments in Zoho-ready format, or let your developer post them automatically. Contacts matched by GSTIN/PAN.
TallyPrime
One-click Tally XML export for your accountant, filtered by date range and voucher type, with automatic ledger mapping.
Your own store or app
Selling on your own website or a marketplace? Plug the API in and FiniiOne becomes your live inventory and billing engine.
Live in three steps — fully self-service
Activate a plan
Pick an API category inside Settings → API & Integrations and pay online — it unlocks instantly.
Generate your key
Create a sandbox key to test safely (nothing is saved), then a live key for production. Keys are shown once and stored only as a fingerprint.
Go live
Follow the in-app documentation and playground with copy-paste examples in curl, Node.js and Python. Every call is logged for you to review.
Every endpoint, at a glance
Full interactive documentation with a live playground is inside the product under Settings → API & Integrations.
/api/public/v1/inventory
List stock · E-Commerce REST API
/api/public/v1/inventory
Stock entry · E-Commerce REST API
/api/public/v1/inventory/changes
Changes since · E-Commerce REST API
/api/public/v1/inventory/{id}
Get one device · E-Commerce REST API
/api/public/v1/inventory/{id}/reserve
Reserve device · E-Commerce REST API
/api/public/v1/inventory/{id}/reserve/confirm
Confirm hold · E-Commerce REST API
/api/public/v1/inventory/{id}/reserve
Release hold · E-Commerce REST API
/api/public/v1/invoices
Raise invoice · E-Commerce REST API
/api/public/v1/invoices
List invoices · E-Commerce REST API
/api/public/v1/invoices/{id}
Get invoice · E-Commerce REST API
/api/public/v1/invoices/{id}/cancel
Cancel invoice · E-Commerce REST API
/api/public/v1/credit-notes
Credit note (return) · E-Commerce REST API
/api/public/v1/invoices/{id}/payments
Collection mapping · E-Commerce REST API
/api/public/v1/integrations/zoho/invoices
Zoho Books invoices · Zoho Books Connect
/api/public/v1/integrations/tally/export
Tally XML vouchers · TallyPrime Connect
/api/public/v1/integrations/ai/tools
AI tool schema · Claude & ChatGPT Connect
/api/public/v1/integrations/ai/query
Business summary · Claude & ChatGPT Connect
/api/public/v1/verify/checks
List KYC checks · FiniiVerify KYC
/api/public/v1/verify/{check}
Run KYC check · FiniiVerify KYC
Secure by design
Every key belongs to one account — no key can ever see another business's data.
Keys are stored only as fingerprints; the real key is shown once.
Per-key rate limits, idempotency protection and a full audit log of every call.
AI connector keys are read-only — assistants can look, never touch.