Documentation

Start with a first purchase, then go as deep as you need. Every code example here runs in the Tollex test suite.

Getting started

Integrations
Every surface, the five operations and where the spending boundary sits.
TypeScript SDK
Plan and buy under a policy and check the receipt, in six lines.
Python SDK
The same operations and reason codes, in Python.
CLI
Plan and buy from a shell; JSON output and exit codes.
MCP server
Five tools for MCP hosts, LangChain, CrewAI and ElizaOS.
AI SDK tools
AI SDK 7 tools with approval for buying.
AgentKit actions
Coinbase AgentKit actions with a strict wallet boundary.
A2A skills
Intent skills and the a2a-x402 payment flow.
Agent Skill
A skill for agents that load skills.

Why agents use Tollex
The technical case: discovery, policy, routing, payments, reconciliation, receipts.
Intents
Needs, typed constraints and how profiles compose.
Resolve
Eligibility, ranking and the explained plan. Never spends.
Execution
do(intent), the receipt-first result and operation state.
External x402 merchants
Buying from x402 services Tollex does not run: live terms, direct payment, no Tollex fee, route evidence.

Economic policy
Budgets, allow lists, signature lifetimes and fail-closed evaluation.
Payments
x402 v2, schemes, networks, assurance and facilitators.

Tools and capabilities
The capability model, quotes, billing and the first-party suite.
Providers
OpenAPI and manifests, credentials, payment and reputation.
Discovery
Well-known documents, OpenAPI, Bazaar, A2A and MCP.
Merchants
Protect a route; metered and batch charging; framework adapters.