DeepSeek Harness

Using Context7 with DeepSeek Harness

Context7 integrates with DeepSeek Harness through the official @upstash/context7-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:

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:

dsh plugin --profile headless add @upstash/context7-deepseek-harness

Verify the composed configuration and start the profile:

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:

export CONTEXT7_API_KEY=ctx7sk_...

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

mkdir -p ~/.dsh
chmod 700 ~/.dsh
${EDITOR:-vi} ~/.dsh/.credentials.yaml
chmod 600 ~/.dsh/.credentials.yaml

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

resolve-library-id

Finds Context7-compatible library IDs and available versions for a package or product.

query-docs

Fetches current documentation and code examples for a selected library ID.

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.