DeepSeek Search API compatibility

Web search for DeepSeek Harness

Search the web and read pages through Search1API, using Harness’s built-in tools and your existing workflow. No plugin to install.

What Harness can do with Search1API

Search the web

Use web_search to find sources with titles, links and snippets, ready for Harness to reference.

Read page content

Use web_fetch to read a source as Markdown when a search snippet is not enough.

Use one Search1API account

Keep your API key, credit balance and account rate limit. Search costs 1 credit per request; fetch costs 1 credit per page.

Connect in three steps

  1. Create a Search1API key, then open Plugins → Built-in plugin settings → Web search in DeepSeek Harness.

  2. Turn on Use the new Web Search API. Paste the base URL and your Search1API key into the settings shown here, then save.

  3. Ask Harness to search the web and read one of its sources. The next operation uses the new settings without a restart.

Search / Fetch API base URL
https://api.search1api.com/compat/deepseek

Verified against the search and fetch providers in DeepSeek Harness 0.2.2. Use the compatibility reference for request fields and error details.

Client examples:DeepSeek Harness 0.2.2Read the compatibility reference

Search: 1 credit per request. Fetch: 1 credit per page. Both use your existing Search1API balance and rate limit.

View pricing

What this connection supports

  • Search results come from Search1API, so rankings and snippets can differ from DeepSeek’s own search.

  • Search returns sources and snippets. need_content is ignored; web_fetch reads a page as Markdown.

  • The compatible search request does not expose engine, recency or site filters, or generated answers.

Need extra tools? See the Harness integration and dsh-s1 plugin

DeepSeek connection questions

Do I need the dsh-s1 plugin?

No. The built-in tools cover web search and page reading. Choose dsh-s1 when you also need news, agentic search, sitemap discovery or trending topics. The Harness integration guide covers both routes.

Which API key should I enter?

Use your Search1API API key, not a DeepSeek key. Harness sends it to the configured endpoint as a Bearer token. To switch back to DeepSeek’s own search, restore its base URL and re-enter a DeepSeek key.

How much do search and fetch cost?

One search costs 1 credit and one fetched page costs 1 credit, using your existing Search1API balance and account rate limit. New accounts include 100 free credits.