05 · platform · 01 systems # Platforms & harness multiplexersWorkspaces and APIs that run several agent harnesses at once. Platforms sit above individual agents: multi-agent IDEs that run Claude Code, Codex, and Cursor side by side in Git worktrees, or managed APIs that deploy coding agents across harnesses with sandboxes and credentials. SEC.01 ## Systems in this category [Cursor Origin Anysphere · platform Cursor Origin is Anysphere's code hosting and git platform built for the agentic era — repositories, pull requests, and AI review under a Codebase tab, positioned as a GitHub alternative for a workflow where coding agents open a large share of PRs. editor/api · cloud · In beta for paid Cursor plans; GA targeted fall 2026](https://www.agentlist.io/systems/cursor-origin) SEC.02 ## Who it's for Power users running many agents in parallel, and product teams that want to embed coding agents without operating the agent loops themselves. SEC.03 ## Tradeoffs Adds a coordination layer and another vendor. The category is young; the seed does not yet include a verified entry here. FAQ ## Frequently asked ### What is an agent platform? Platforms sit above individual agents: multi-agent IDEs that run Claude Code, Codex, and Cursor side by side in Git worktrees, or managed APIs that deploy coding agents across harnesses with sandboxes and credentials. ### Who should use an agent platform? Power users running many agents in parallel, and product teams that want to embed coding agents without operating the agent loops themselves. ### What are the tradeoffs of agent platforms? Adds a coordination layer and another vendor. The category is young; the seed does not yet include a verified entry here. ### Which agent platforms are in the catalog? 1 as of 2026-09-25: Cursor Origin (Anysphere). ### What is an agent harness multiplexer? A workspace or API layer that runs multiple coding-agent harnesses (Claude Code, Codex CLI, Cursor, OpenCode) in parallel — typically with worktree isolation and a shared status view. ### Why are there no platform entries yet? The first-pass inventory identified candidates but none met the verification bar for the seed. The category is kept in the taxonomy so entries land in the right place when verified. Other categories - [01AI IDEs06](https://www.agentlist.io/categories/ai-ide) - [02IDE extensions & copilots10](https://www.agentlist.io/categories/ide-extension) - [03CLI & terminal agents15](https://www.agentlist.io/categories/cli-agent) - [04Cloud & autonomous agents05](https://www.agentlist.io/categories/cloud-agent) - [06Model routers & gateways02](https://www.agentlist.io/categories/model-router) - [07Bridges, brokers & protocols02](https://www.agentlist.io/categories/bridge) - [08Agent communication & collaboration13](https://www.agentlist.io/categories/agent-communication) - [09Agent services15](https://www.agentlist.io/categories/agent-services) - [10Personal & always-on agents06](https://www.agentlist.io/categories/personal-agent) - [11AI employees & digital coworkers10](https://www.agentlist.io/categories/digital-employee) - [12On-call & ops agents07](https://www.agentlist.io/categories/ops-agent) - [13Browser & computer-use agents06](https://www.agentlist.io/categories/computer-use) - [14Research & analyst agents07](https://www.agentlist.io/categories/research-agent) - [15Voice & phone agents07](https://www.agentlist.io/categories/voice-agent) Examples: Multi-agent IDEs · Managed agent APIs. Entries are editorial records from seed 2026-09-25, not endorsements. --- Source: [Platforms & harness multiplexers — 1 compared | agentlist.io](https://www.agentlist.io/categories/platform). This is the public page rendered as Markdown; interactive controls require the website.