http-request-dsh-plugin

Making HTTP requests inside DeepSeek Harness used to mean spinning up an MCP Server or writing ad-hoc scripts. http-request-dsh-plugin registers the http_request tool as a pure DSH Plugin: no external process, no MCP stdio channel, no extra runtime to babysit. Once installed, outbound HTTP(S) calls become a native Harness capability.

The tool covers the full method set (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS), accepts structured headers, query strings, JSON bodies, or plain text, and supports direct connections, system proxies, and manually specified HTTP(S) proxies. Response handling is equally thorough: configurable timeouts, character-level truncation for previews, full response-header inspection, and the ability to persist the entire response body to a file. On the security side, a credential-whitelist mechanism guards secret access end to end. On Windows the plugin reads from the Credential Manager; on Linux it shells out to pass and takes the first line of output. A request only triggers credential lookup when its target prefix matches the credentialPrefixes list; anything else receives a clean JSON error without ever touching the secret store.

This plugin is aimed at engineers and teams working inside DeepSeek Harness who routinely need data scraping, API debugging, automation glue, or backend integration—and who want those network calls to live inside the Harness process with a clear, auditable credential-security model, rather than maintaining a separate MCP service.