# design-agent / Content Studio (LangChain's open-source on-brand design agent in Slack)

> Updated 2026-10-28 · type: tool · category: content-copywriting · status: active · rev 1

LangChain's design-agent turns a Slack request into on-brand graphics, decks and short videos, so routine asset asks skip the design queue.

- Open source: yes (Apache-2.0)
- Self-hostable: yes
- Pricing: Code free (Apache-2.0). You pay model spend with your own key and, optionally, LangChain Managed Deep Agents hosting (paid, public beta).
- Best for: Lean marketing and GTM teams where sales, founders and others queue routine asset requests (ad resizes, social cards, charts, decks) and a technical owner can run Docker and model keys.
- Not for: Teams without someone to host and maintain a Docker stack with a sandbox, or that need a mature, supported product; the repo is under two weeks old with two contributors.
- Last verified: 2026-10-28

- **Canonical:** https://gtmstacker.com/registry/tool/design-agent/
- **Source:** [How we built Content Studio, an open-source design agent in Slack that makes on-brand videos, graphics and decks](https://x.com/LangChain/status/2115124503093121121) — LangChain
- **Tags:** content-copywriting, marketing-ops, mcp-agents, design-agent, brand-assets, slack-bot, deep-agents, langchain, self-hosted, open-source
- **Repository:** https://github.com/langchain-ai/design-agent

## Is design-agent / Content Studio (LangChain's open-source on-brand design agent in Slack) open source?

Yes, design-agent / Content Studio (LangChain's open-source on-brand design agent in Slack) is open source under the Apache-2.0 license.

## How much does design-agent / Content Studio (LangChain's open-source on-brand design agent in Slack) cost?

Code free (Apache-2.0). You pay model spend with your own key and, optionally, LangChain Managed Deep Agents hosting (paid, public beta). (free).

## Can I self-host design-agent / Content Studio (LangChain's open-source on-brand design agent in Slack)?

Yes, design-agent / Content Studio (LangChain's open-source on-brand design agent in Slack) can be self-hosted (the source is available under the Apache-2.0 license).


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**design-agent** (`langchain-ai/design-agent`) is an **Apache-2.0** design agent from **LangChain**. Inside LangChain and as a Slack app it is called **Content Studio**; the repo, package and CLI are named `design-agent` (the README FAQ explains the two names). Teammates ask for an asset in Slack and the agent produces on-brand graphics, ad resizes, LinkedIn cards, decks, charts and short launch videos, using a brand pack (tokens and fonts) stored as code. It is built on LangChain's Deep Agents, needs Python 3.11+, defaults to Claude Opus 5.5 and also supports OpenAI, Google and OpenAI-compatible endpoints.

## Provenance

- SPDX **Apache-2.0**, confirmed by the GitHub license API and the LICENSE file; the README badge and FAQ agree.
- Identity: official `langchain-ai` organization repo, linked from LangChain's blog and docs. Unrelated repos named "content-studio" exist on GitHub and are not this tool.
- Activity as of 2026-10-29 (GitHub API): **232 stars, 30 forks**, not archived. Created 2026-10-18, last push 2026-10-27, 44 commits, 2 contributors.
- Self-hosting: yes. `docs/self-hosting.md` describes a Docker Compose stack (HTTP API, Postgres, sandbox), an optional own Slack app in Socket Mode and a bring-your-own model key. A local demo with a scripted model runs with no API keys (Docker required).
- Pricing: the code is free. Costs are model spend and, optionally, hosting on LangChain Managed Deep Agents (LangSmith Cloud, paid, public beta).
- **Vendor claims:** "3,000+ assets since August", "about 4.5M views on X", "three in four requests come from outside marketing" and "median request costs about 50 cents in model spend" are LangChain's own figures.
- Surfaced via LangChain's X post in the 2026-10-28 pull (the post returned HTTP 402; used for discovery only). Curated and verified in run `2026-10-28-registry-update-01` (step-3 verification, 2026-10-29 local; content date 2026-10-28).

## Why it matters for a GTM stack

In a small company the person who needs a LinkedIn card or a resized ad is usually not the designer, so requests wait in a queue. design-agent lets anyone ask in Slack and get an asset that follows the brand pack, with model spend LangChain puts at about 50 cents a request. The tradeoff is ownership: someone has to host the stack, keep the brand pack current and review output before it ships.