---
title: "DeepSeek Harness pricing, platforms and integrations"
description: "Open source agent harness from DeepSeek with a browser UI, in developer preview, bring your own key for DeepSeek and catalog providers such as Anthropic or OpenAI."
canonical_url: "https://whichcoding.tools/tools/deepseek-harness"
---
# DeepSeek Harness

> Open source agent harness from DeepSeek with a browser UI, in developer preview, bring your own key for DeepSeek and catalog providers such as Anthropic or OpenAI.

> Preview.

- **Layer**: Terminal agent
- **Vendor**: DeepSeek
- **Platforms**: macOS, Windows
- **License**: MIT
- **Pricing**: Free
- **Status**: Preview
- **JSON**: /api/v1/tools/deepseek-harness.json

## Links

- [Website](https://www.deepseek.com/harness/en/)
- [Repo](https://github.com/deepseek-ai/deepseek-harness)
- [Docs](https://deepseek-harness.github.io/deepseek-harness/en/guide/providers)

## Pricing

| Plan | Price | Included | Beyond that | Notes |
| --- | --- | --- | --- | --- |
| Open Source (individual) | Free | — | — | MIT licensed, run it from npm or from source; Bring your own API key or credentials for the model provider you configure |

DeepSeek Harness is free and open source under MIT; model access uses your own provider key or credentials.

Source: [deepseek.com/harness/en](https://www.deepseek.com/harness/en/), verified 2026-09-08.

## Models

- **Providers**: Anthropic, OpenAI, DeepSeek
- **Bring your own key**: BYOK
- **Local models**: No

The DeepSeek card takes an API key directly. Adding a catalog provider covers named providers such as Anthropic or OpenAI with a pasted key, or deployments needing native credentials instead, such as AWS credentials for Bedrock, an ADC project for Vertex, an api-version for Azure, or OAuth for Codex. A custom provider is defined by its own base URL, API protocol and credential, for a company gateway, a self-hosted server or a provider missing from the catalog, and model discovery calls the OpenAI-compatible GET /models endpoint.

## Features

- **Subagents**: The agent can delegate to child agents
- **MCP client**: Connects to MCP servers

## Install

- **npm**: `npx @deepseek-ai/dsh web`

## License

- **SPDX**: MIT
- **Kind**: Open source
- **Repo**: [github.com/deepseek-ai/deepseek-harness](https://github.com/deepseek-ai/deepseek-harness)

## Sources

Every fact above points at a vendor page and the date someone last checked it.

| Source | Covers | Verified |
| --- | --- | --- |
| [deepseek.com/harness/en](https://www.deepseek.com/harness/en/) | pricing, general, features | 2026-09-08 |
| [github.com/deepseek-ai/deepseek-harness](https://github.com/deepseek-ai/deepseek-harness) | license, general | 2026-09-08 |
| [raw.githubusercontent.com/deepseek-ai/deepseek-harness/master/package.json](https://raw.githubusercontent.com/deepseek-ai/deepseek-harness/master/package.json) | platforms | 2026-09-08 |
| [raw.githubusercontent.com/deepseek-ai/deepseek-harness/master/apps/desktop/package.json](https://raw.githubusercontent.com/deepseek-ai/deepseek-harness/master/apps/desktop/package.json) | platforms | 2026-09-08 |
| [deepseek-harness.github.io/deepseek-harness/en/guide/providers](https://deepseek-harness.github.io/deepseek-harness/en/guide/providers) | models | 2026-09-08 |
| [deepseek-harness.github.io/deepseek-harness/guide/mcp-memory](https://deepseek-harness.github.io/deepseek-harness/guide/mcp-memory) | features | 2026-09-08 |

Source data: [content/tools/deepseek-harness.yml](https://github.com/benjamincanac/whichcodingtools/blob/main/content/tools/deepseek-harness.yml)

## Related

- [Compare DeepSeek Harness with another tool](https://whichcoding.tools/compare?tools=deepseek-harness)
- [All terminal agents](https://whichcoding.tools/layers/harness)

Data: CC BY 4.0. Credit whichcoding.tools and link to https://whichcoding.tools. Full terms in [LICENSE-DATA](https://github.com/benjamincanac/whichcodingtools/blob/main/LICENSE-DATA).

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