> ## Documentation Index
> Fetch the complete documentation index at: https://context7-ctx7-1985-deepseek-plugin.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# DeepSeek Harness

> Using Context7 with DeepSeek Harness

Context7 integrates with [DeepSeek Harness](https://github.com/deepseek-ai/deepseek-harness) through the official [`@upstash/context7-deepseek-harness`](https://github.com/upstash/context7/tree/master/packages/deepseek-harness) plugin. It registers Context7's documentation tools natively through the harness tool service and adds system-prompt guidance so library-specific questions invoke them automatically.

## Installation

Install the bundle into a DeepSeek Harness profile and store a Context7 API key in the Harness credential provider:

```bash theme={null}
npx ctx7@latest setup --deepseek headless
```

Pass another profile name instead of `headless` when needed. Without an existing Context7 login, setup starts the device authorization flow and creates an API key.

To use anonymous Context7 limits without configuring a key, install the bundle directly:

```bash theme={null}
dsh plugin --profile headless add @upstash/context7-deepseek-harness
```

Verify the composed configuration and start the profile:

```bash theme={null}
dsh --profile headless --dump-config
dsh --profile headless
```

Remove it with `dsh plugin --profile headless remove @upstash/context7-deepseek-harness`.

## Authentication

The plugin resolves `CONTEXT7_API_KEY` through DeepSeek Harness's credential provider before every request. The setup command stores it in `$DSH_HOME/.credentials.yaml`, which defaults to `~/.dsh/.credentials.yaml`. Credential changes apply without reloading the plugin.

The launching environment remains supported:

```bash theme={null}
export CONTEXT7_API_KEY=ctx7sk_...
```

For manual credential-file setup, edit the flat YAML mapping and apply owner-only permissions:

```bash theme={null}
mkdir -p ~/.dsh
chmod 700 ~/.dsh
${EDITOR:-vi} ~/.dsh/.credentials.yaml
chmod 600 ~/.dsh/.credentials.yaml
```

```yaml theme={null}
CONTEXT7_API_KEY: ctx7sk_...
```

Never put API keys in `cordis.yml` or `cordis.patch.yml`; composed configuration can be printed and shared during debugging.

## What it adds

<CardGroup cols={2}>
  <Card title="resolve-library-id" icon="magnifying-glass">
    Finds Context7-compatible library IDs and available versions for a package or product.
  </Card>

  <Card title="query-docs" icon="book">
    Fetches current documentation and code examples for a selected library ID.
  </Card>
</CardGroup>

## Usage

Ask a documentation question in a DeepSeek Harness session:

```
How do I configure caching in Next.js 16?
Show me the current Prisma syntax for relations.
What are the Supabase authentication methods?
```

The model resolves the relevant Context7 library ID and then queries its documentation.