Breaking

UltraContext Brings Shared Real-Time Context to Claude Code and Codex

September 10, 2026 at 04:21 EDT

AI Agents
Software Dev & Coding
Open Source

UltraContext, an open-source context layer for AI agents, captures sessions from Claude Code and Codex in real time and makes them available through a shared Context API and Model Context Protocol (MCP) server. The project is designed to let developers move between coding agents while preserving session history and recent activity.

JAN 1, 2026 · ULTRACONTEXT

Shared context for coding agents

UltraContext captures Claude Code, Codex, and OpenClaw sessions in real time, then exposes them through a shared API and MCP Server.

From session to shared state

A background daemon turns agent activity into searchable, on-demand context.

Ingest

Capture agent session events automatically.

→

Store

Keep contexts in one versioned state layer.

→

Consume

Let compatible agents retrieve what matters.

Published query capacity

1,000

Free · queries/month

50,000

Pro · queries/month

50x the listed monthly query allowance

Each full orange block represents 10,000 queries.

session sources in the CLI

core Context API methods

MCP tools for retrieval

Why it matters

Versioned context
Agents can edit, replay, and fork context without discarding history.

What remains open

Scale and privacy
Early feedback asked about compression, large histories, and hosted message storage; self-hosting is documented.

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