mcp-usage-core 0.5.0

Billing-attribution semantics for MCP 2026-07-28. No I/O, no async, no transport.
Documentation

mcp-usage-core

Pure billing-attribution semantics for MCP 2026-07-28. This crate performs no I/O, starts no tasks, and has no transport dependency. It classifies terminal delivery, MRTR continuations, durable tasks, errors, cache delivery, quotas, and spend caps.

Most applications should depend on the mcp-usage-kit facade. Use this crate directly when you need only the deterministic protocol and pricing engine.

API documentation | Conformance vectors

Licensed under Apache-2.0.