> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.withpaygent.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.withpaygent.com/_mcp/server.

# Key Features

Paygent provides everything you need to monetize AI products — from first SDK call to paid invoice.

## Usage tracking & metering

* **Agents & indicators** — billable units for any AI workflow
* **Automatic token counting** — 50+ models across OpenAI, Anthropic, Google, Meta, and more
* **Billable metrics** — sum, count, max, unique count, custom expressions on `meta_tags`
* **Voice & video** — per-minute, per-pulse, and resolution-tier billing
* **External costs** — telephony, SMS, and pass-through expenses via `send_external_cost`

## Pricing & packaging

* **Multiple subscription fees** — stack setup, platform, and seat-based fees on one agent
* **Plans** — Standard tiers and Custom per-customer deals
* **Activity & outcome pricing** — FLAT, VOLUME, GRADUATED, and CREDITS billing types
* **Credit currencies & wallets** — prepaid packs and postpaid accrual
* **Custom model pricing** — override token, audio, and video rates per provider/model
* **Taxes** — percentage and fixed taxes on every invoice

## Billing operations

* **Orders** — subscription contracts with billing day, terms, and tax selection
* **Automatic invoicing** — line items from fees, usage, external costs, and wallet conversions
* **Payments** — Stripe and Razorpay payment links, manual payment recording
* **Plan upgrades** — change tiers on active orders without re-creating customers

## Analytics & economics

* **Real-time dashboards** — usage, revenue, and cost per agent/customer/indicator
* **Unit economics** — margin tracking when cost and revenue are both captured
* **Forecasting** — project revenue from usage trends

## Developer experience

* **SDKs** — Python, Node.js, and Go with automatic LLM instrumentation
* **LangChain & LangGraph** — native integration callbacks
* **Fire-and-forget tracking** — non-blocking usage calls with validation and logging
* **Public APIs** — customers, orders, wallets, and agents

## Enterprise-ready

* Multi-fee invoicing with advance/arrears billing timing
* Custom plans assigned to specific customers
* GST/VAT and multi-tax support
* Wallet overage limits and credit rollover
* Infra cost import (AWS, GCP) for internal cost allocation

[See how it fits together →](/documentation/introduction/how-it-works)