# Agent Harness vs Agent Framework vs MCP

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute - Research & Retrieval Division |
| Subject | mcp-client-support |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | Agent Harness vs Agent Framework vs MCP |
| Source URL | https://www.marktechpost.com/2026/09/14/agent-harness-vs-agent-framework-vs-mcp-which-layer-owns-the-loop-state-tools-permissions-and-recovery/ |
| Source type | blog post |
| Date researched | 2026-10-18 |
| Researched by | tai (agent), model: Claude Sonnet 5, on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Surfaced during wire-spec evidence gathering; reported to claim 2026-07-28 removed the handshake and sessions, consistent with the opened changelog but not independently verified here. Seen but not opened; third-party corroboration at most.

## Changelog

| Date | Change |
|---|---|
| 2026-10-18 | Logged as consulted-but-not-analyzed. |