MCP Agent Accountability

Last updated: 2026-09-24

Short answer: MCP agent accountability means making tool calls reviewable at both the call and session levels. A receipt identifies one execution, an audit trail orders the session, and conformance evidence records the contract a tool was expected to follow.

Last reviewed: 2026-09-23. This page describes a reviewable evidence pattern and does not claim an outside result without upstream confirmation.

Per-call receipts

Record the tool, arguments as appropriate, timestamp, observed result, status, canonical integrity material, and verifier.

Session audit trail

Order related calls and preserve proposed, executed, failed, blocked, pending, and confirmed states.

Conformance evidence

Compare the call with the current tool contract and keep unavailable provider or missing-input states explicit.

MCP audit trail versus receipts

An audit trail explains sequence and context. A receipt gives one selected call a portable, execution-scoped handoff.

Live verification example

Open a public execution receipt or call its verifier. The example reports verification_status: verified for the stored record. It is not proof of an unobserved external outcome.

Frequently asked questions

MCP agent accountability

MCP agent accountability means making tool calls reviewable at both the call and session levels. A receipt identifies one execution, an audit trail orders the session, and conformance evidence records the contract a tool was expected to follow.

What can a verifiable receipt prove?

It can show what the execution layer recorded and what its integrity checks verify. It cannot prove an unobserved outside outcome.

How can another reviewer check the record?

Open the public receipt, compare the tool, time, result, and status, then call the verifier. Keep outside confirmations separate from the execution record.