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Getting started
  • Quickstart
Concepts
  • The Meter & Units
  • Streaming & Proof-of-Flow
  • Citation Toll & Royalty Splits
  • Reputation Bonds
Build
  • sluice-pay SDK
  • MCP server
  • API reference
  • Connectors
  • List your endpoint on the Bazaar
Compatibility
  • RSL & llms.txt
  • Self-hosting the toll sidecar
Trust
  • Changelog
  • FAQ
Resources
Whitepaper (PDF) ↗
Concepts

The Meter & Units

The Meter is unit-agnostic. If it can be counted, it can be priced and paid for — per use.

Units

Built-in unit types, each priced in 6-dp USDC base units:

  • per_request, per_read, per_crawl — discrete calls.
  • per_citation — pay when a source grounds an answer (the citation toll).
  • per_second — streaming/continuous (see Streaming).
  • per_byte, per_token, per_listen, per_view.

Accrual & batching

A payer signs an x402 authorization against the Gateway Wallet. Usage accrues per unit, and the platform batches accruals into a single gas-free settlement through Circle Gateway. A reconciler polls Circle until each transfer is confirmed and marks the receipt settled.

Decimals discipline

Never mix decimals
Payment USDC is 6-dp and handled as bigint base units — never floats. Native Arc gas is 18-dp and tracked separately. Sluice never coerces between them.
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On this page
  • Units
  • Accrual & batching
  • Decimals discipline