What Agenta shipped #
Agenta, an MIT-licensed workspace for building and running AI agents, has positioned itself in its GitHub README as an alternative to Claude Cowork — Anthropic’s desktop agent tool that lives on a single laptop — with a paragraph for each platform it aims to displace. The repo carries 4.4k stars and 591 forks. It has been discussed on r/LocalLLaMA as a self-hosted alternative to Cowork. The pitch: build an agent by chatting with it, share it with a small team, and run it in the background on a schedule or when an event fires in a connected app.
The architecture differs from Cowork in three ways. The project is open source under MIT, so you can read and run the code. The harness — the AI execution layer that plans work and calls tools — is pluggable. The model layer is decoupled from the workspace, so any major provider or a self-hosted model can be swapped in — the exact list lives in the box below.
4.4kstars on GitHub for an MIT-licensed agent workspace that runs on your own hardware and plugs into your existing Claude or ChatGPT subscription.
That is the framing a UK procurement team will want to read first. A team can keep Anthropic usage on a $20-a-month Pro seat for routine work and only spin up metered API billing for the jobs that genuinely need it.
Why the timing matters #
Cowork set the bar for what an agentic desktop workspace feels like. The problem, as the Kilo team’s Cowork alternatives guide documented in April, is that it stops the moment the laptop sleeps — a non-starter for any process that has to run overnight. Agenta’s background-agent feature exists for that case: scheduled runs and event triggers from connected apps, with traces and a per-agent version history kept in the open-source edition.
The timing helps. Anthropic’s Fable 5 plan now bundles Cowork, but US export controls have made the subscription brittle outside the US — see our Claude Fable 5 explained — and procurement teams in regulated industries have spent 2026 writing memos about data residency. A self-hostable workspace with explicit per-tool permissions addresses both papers at once.
What it does in practice #
Agenta’s primitives map directly onto what a small UK team wants an agent to do:
Shared workspaces— a folder where the agent and a human co-author documents, research notes and wikis.** Human approval and permissions**— per-tool rules that decide which actions a background agent can take unattended, which need sign-off, and which are blocked.Background agents— scheduled or event-driven runs that fire without a human pressing start.** Tracing, usage and cost**— every model and tool call logged, with token use and estimated spend attached.** Team access**— share agents across a small team with role-based control, included in the open-source build.** Integrations**— connect to apps through MCP (a standard protocol for plugging external tools into an agent), or to more than 1,000 apps via Composio, including Gmail, Slack, Notion and GitHub.
The hosted option is Agenta Cloud — the faster path for a team that doesn’t want to run its own servers.
How to try it this afternoon #
Agenta is the third name worth knowing in a credible list of open Cowork rivals. We’ve covered the underlying stack in Picking a model for an open Cowork and the UK-priced reference build in A business assistant for under £50 a month. Agenta differs from OpenClaw-style alternatives in two ways: a workspace metaphor rather than a sandbox one, and shared open standards rather than a single vendor’s tool schema.
For a UK team leader weighing this against Cowork, the decision turns on three things: Do you need always-on background execution? If yes, Cowork on a closed laptop isn’t enough — Agenta or a hosted alternative is.Do you need model choice? If yes, Agenta’s pluggable model layer wins over Cowork’s Anthropic-only default.Do you need to keep data on your own hardware? Self-hosting Agenta gives you that. The hosted Agenta Cloud does not.
The limits to budget for: self-hosting is real DevOps, and 4.4k stars is healthy for an agent framework but still young — budget time to read the code as well as run it. If your team isn’t comfortable with the command-line install path, the hosted Agenta Cloud or a more polished alternative will get you to the same outcome with fewer weekends lost.
The starting move is small: stand up one agent on a recurring nuisance job — a weekly Slack summary of inbound enquiries, say — and see whether the traces, permissions and cost tracking hold up for a fortnight. If they do, the rest of the workspace opens up from there.
Sources & quotes #
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