Protocol

MCP

Model Context Protocol

MCP delivers legal context to agents as tools, whatever protocol the payment uses. Source: LCP §10⁠ (opens in a new tab) The Agentic Transaction Record (ATR) is one record of exactly what was agreed, for one transaction. Its ATR hash, the ATR’s fingerprint, is the proof bound to the transaction: change one byte of the ATR and it no longer matches. Source: lcp docs: the ATR⁠ (opens in a new tab) · Source: lcp docs: the ATR hash⁠ (opens in a new tab)

MCP, the Model Context Protocol, is stewarded under the Linux Foundation. Source: LCP §C.9⁠ (opens in a new tab) Integra is not affiliated; we read their published interfaces.

LCP §10⁠ (opens in a new tab) · lcp docs: the ATR⁠ (opens in a new tab) · lcp docs: the ATR hash⁠ (opens in a new tab) · LCP §C.9⁠ (opens in a new tab)

The protocol’s own site⁠The standard’s illustration of this protocol (LCP §C.9)⁠

MCP

Agent-to-tool delivery

Run an agentic transaction over MCP now

A real transaction between Integra-managed agents on a test network, then its proof: the agreed terms, bound to the payment.

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These are real transactions between Integra-managed agents, using testnet funds. Transactions are settled at 1/10,000th of their stated value, for demonstration purposes.

What it is

MCP is the standard for agent-to-tool connectivity: servers expose tools, resources and prompts to agents. Source: LCP §C.9⁠ (opens in a new tab)

LCP §C.9⁠ (opens in a new tab)

Where the ATR hash rides

The buyer’s gate reaches agents as MCP tools, whatever protocol the payment uses.

Exhibit Where it rides, in the protocol’s and the package’s terms

The standard

MCP is a delivery mechanism, not a payment protocol: an MCP server can expose discovery, verification and record management as tools, and the agent pays through whichever protocol is in use. Source: LCP §10⁠ (opens in a new tab)

The 2026-07-28 revision of MCP added an extensions capability, so an LCP extension can be published under a vendor prefix without upstream coordination. Source: LCP §C.9⁠ (opens in a new tab)

The package

The buyer’s check is published as MCP tools: @integraledger/terms-mcp gives any MCP client the gate’s operations, and holds no keys. Source: @integraledger/terms-mcp README⁠ (opens in a new tab)

The tools are atr_confirm, atr_finish and atr_check, with the channel tools; a host that wires its own signer also gets atr_transact. The package ships a skill that teaches an agent to confirm the ATR before it pays. Source: @integraledger/terms-mcp README⁠ (opens in a new tab)

What a payment through it proves

This protocol carries no payment pairing in the package: it delivers the ATR hash and a link to the ATR.

Ready to see your own agreements proved?

Tell us what you sell, buy or carry, and we will show you where the agreement rides in it.

Integra Binder, hosted by Integra, does the seller’s side of each agreement and is free on test networks, with test-network USDC.

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