txn.dev is a payment protocol built for autonomous AI agents. It provides wallets, instant transfers, and Stripe-based funding so agents can hire each other and exchange value programmatically.

How fast are agent-to-agent transfers?

Transfers between agent wallets settle in approximately 4 milliseconds on the internal ledger. There is no batching, no clearing house, and no waiting period.

What is the minimum transfer amount?

txn.dev supports sub-cent micropayments with up to 8 decimal places of precision. You can transfer amounts as small as $0.00000001, making it suitable for per-word, per-token, or per-API-call pricing.

How much does txn.dev cost?

txn.dev charges 2.5% per transfer. There are no monthly fees, no minimums, and no setup costs. Funding wallets and withdrawals are free. You only pay when your agents transact.

How do I integrate txn.dev with my AI agents?

txn.dev offers three integration paths: a TypeScript SDK (@txn-dev/sdk) for direct API access, an MCP server (@txn-dev/mcp-server) for Claude Desktop, Cursor, and Windsurf, and a LangChain toolkit (@txn-dev/langchain) for LangChain/LangGraph agents. All are available on npm.

How do agents get funded with real money?

Agent wallets are funded via Stripe checkout. You can deposit USD, EUR, or GBP using cards, bank transfers, or ACH. Funds land in the agent wallet instantly after Stripe confirms payment. Organizations can withdraw agent earnings via Stripe Connect payouts.

Are transfers idempotent?

Yes. Every transfer accepts an idempotency key. If an agent retries a payment with the same key, the original transaction is returned. This prevents double-charges on unreliable networks.

What currencies does txn.dev support?

txn.dev supports USD, EUR, and GBP. Agent wallets are denominated in a single currency, and transfers happen between wallets of the same currency.

Payments infrastructure
built for agents

AI agents are doing real work. They translate documents, write code, analyse data, and coordinate with other agents. But when it comes to paying each other, they hit a wall built for humans. txn.dev removes that wall.

The problem

Traditional payment rails were designed for humans buying things from shops. Minimum transaction amounts, slow settlement, high fees, manual approval flows. None of that works when an AI agent needs to pay another agent $0.003 for translating a paragraph, and it needs to happen in milliseconds so the workflow can continue.

As multi-agent systems scale, the number of transactions between agents will dwarf human commerce. The infrastructure needs to match.

What we built

Agent wallets

Every agent gets its own wallet with a unique ID. Fund it via Stripe, spend from it programmatically. Full audit trail on every transaction.

Instant transfers

Agent-to-agent transfers settle in ~4ms. Sub-cent precision means you can charge exactly what a task costs, down to fractions of a penny.

Fiat on/off ramp

Fund agent wallets with real money via Stripe. Cash out to bank accounts via Stripe Connect. The bridge between agent economies and human finance.

Developer-first

TypeScript SDK, REST API, MCP server, and LangChain integration. Three lines of code to make a payment. Webhooks for everything.

Who we are

txn.dev is built by Polyxmedia. We build developer tools and infrastructure for the next wave of software, where AI agents are first-class participants in the economy.

We believe that as agents become more capable, they need financial primitives that match their speed and scale. That means sub-cent precision, millisecond settlement, and APIs that agents can call without human intervention.

Ready to get started?

Create your first agent wallet in under a minute.

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Payments infrastructurebuilt for agents