{
  "api_version": "1",
  "updated": "2026-11-05",
  "latest_event": "2026-11-04",
  "rights": "© Frontier Log, all rights reserved.",
  "story": {
    "slug": "deepseek-harness-timeline",
    "title": "DeepSeek, From Claude Code Support to Its Own Agent App",
    "description": "DeepSeek's model posts named Claude Code and Codex, and since Aug 17 it has shipped an agent app of its own, DeepSeek Harness.",
    "url": "https://frontierlog.ai/stories/deepseek-harness-timeline",
    "date": "2026-11-02",
    "image": "https://frontierlog.ai/og/story-deepseek-harness-timeline.png",
    "event": "2026-08-13-deepseek-v4-pro-ga",
    "tags": [
      "agents",
      "coding"
    ],
    "steps": [],
    "tables": [],
    "records": [
      {
        "date": "2025-08-21",
        "party": "DeepSeek",
        "what": "V3.1 supports the Anthropic API format",
        "by": "DeepSeek",
        "source": "https://api-docs.deepseek.com/news/news250821/",
        "quote": "Anthropic API format supported"
      },
      {
        "date": "2026-04-24",
        "party": "DeepSeek",
        "what": "says V4 is integrated with Claude Code, OpenClaw and OpenCode",
        "by": "DeepSeek",
        "source": "https://api-docs.deepseek.com/news/news260424/",
        "quote": "DeepSeek-V4 is seamlessly integrated with leading AI agents like Claude Code, OpenClaw & OpenCode."
      },
      {
        "date": "2026-08-13",
        "party": "DeepSeek",
        "what": "adds OpenAI Responses API support, optimized for Codex",
        "by": "DeepSeek",
        "source": "https://api-docs.deepseek.com/news/news260813/",
        "quote": "Native OpenAI Responses API support, optimized for Codex with one-click setup.",
        "key": true
      },
      {
        "date": "2026-08-17",
        "party": "DeepSeek Harness",
        "what": "makes the first release of its agent app, DeepSeek Harness, on GitHub",
        "by": "DeepSeek",
        "source": "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.7",
        "quote": "Manage Codex and Claude Code subagent tasks through the Job Panel",
        "key": true
      },
      {
        "date": "2026-08-19",
        "party": "DeepSeek Harness",
        "what": "lets Harness install Claude Code and Codex as subagents on demand",
        "by": "DeepSeek",
        "source": "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.8",
        "quote": "Make Claude Code and Codex subagents installable on demand as Profile Bundles, with non-interactive permission modes and named instances"
      },
      {
        "date": "2026-10-31",
        "party": "DeepSeek Harness",
        "what": "open-sources the Super-agent research prototype",
        "by": "DeepSeek",
        "source": "https://github.com/deepseek-ai/dsh-superagent-prototype",
        "quote": "Research prototype for reference only, not an official DeepSeek product.",
        "key": true
      },
      {
        "date": "2026-11-01",
        "party": "DeepSeek Harness",
        "what": "posts a machine-translated English version of its Super-agent design article",
        "by": "DeepSeek",
        "source": "https://x.com/DeepSeekHarness/status/2116857257245987236",
        "quote": "This article discusses architectural ideas. It is not an introduction to existing features of DeepSeek Harness."
      }
    ],
    "statements": [
      {
        "party": "DeepSeek Harness",
        "by": "DeepSeek",
        "source": "https://www.deepseek.com/en/harness/",
        "quote": "DeepSeek Harness is now in public preview worldwide and open source, with composable plugins that extend what agents can do."
      },
      {
        "date": "2026-11-01",
        "party": "DeepSeek Harness",
        "by": "DeepSeek",
        "source": "https://x.com/DeepSeekHarness/status/2116857257245987236",
        "quote": "Anthropic's “Decoupling the brain from the hands” takes the same approach: the harness stays stateless, session logs are stored outside it, and execution environments are connected on demand through a unified interface."
      },
      {
        "date": "2026-11-01",
        "party": "DeepSeek Harness",
        "by": "DeepSeek",
        "source": "https://x.com/DeepSeekHarness/status/2116857257245987236",
        "quote": "Our internal Super-agent instance, built on these ideas and on DeepSeek Harness, is already running continuously."
      }
    ],
    "cites": [
      {
        "url": "https://api-docs.deepseek.com/news/news250821/",
        "by": "DeepSeek",
        "medium": "API news post",
        "date": "2025-08-21"
      },
      {
        "url": "https://api-docs.deepseek.com/news/news260424/",
        "by": "DeepSeek",
        "medium": "API news post",
        "date": "2026-04-24"
      },
      {
        "url": "https://api-docs.deepseek.com/news/news260813/",
        "by": "DeepSeek",
        "medium": "API news post",
        "date": "2026-08-13"
      },
      {
        "url": "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.7",
        "by": "DeepSeek",
        "medium": "GitHub release",
        "date": "2026-08-17"
      },
      {
        "url": "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.8",
        "by": "DeepSeek",
        "medium": "GitHub release",
        "date": "2026-08-19"
      },
      {
        "url": "https://github.com/deepseek-ai/dsh-superagent-prototype",
        "by": "DeepSeek",
        "medium": "GitHub repository",
        "date": "2026-10-31"
      },
      {
        "url": "https://x.com/DeepSeekHarness/status/2116857257245987236",
        "by": "DeepSeek",
        "medium": "X article",
        "date": "2026-11-01"
      },
      {
        "url": "https://www.deepseek.com/en/harness/",
        "by": "DeepSeek",
        "medium": "product page"
      }
    ],
    "sources": [
      "https://api-docs.deepseek.com/news/news250821/",
      "https://api-docs.deepseek.com/news/news260424/",
      "https://api-docs.deepseek.com/news/news260813/",
      "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.7",
      "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.8",
      "https://github.com/deepseek-ai/dsh-superagent-prototype",
      "https://x.com/DeepSeekHarness/status/2116857257245987236",
      "https://www.deepseek.com/en/harness/"
    ],
    "body": [
      {
        "figure": "main"
      },
      {
        "p": "Since 2025, DeepSeek's model announcements have named other companies' APIs and agents. Its V3.1 release on Aug 21, 2025 added [Anthropic API format support](https://api-docs.deepseek.com/news/news250821/), and its V4 Preview on Apr 24, 2026 said the model was [“seamlessly integrated with leading AI agents like Claude Code, OpenClaw & OpenCode”](https://api-docs.deepseek.com/news/news260424/). On Aug 17, 2026, DeepSeek made the first GitHub release of an agent app of its own, DeepSeek Harness, and on Oct 31 it open-sourced a research prototype built on it."
      },
      {
        "h": "Models for other agents"
      },
      {
        "p": "DeepSeek's [V3.1 post](https://api-docs.deepseek.com/news/news250821/) listed “Anthropic API format supported” among its API updates. Its [V4 Preview post](https://api-docs.deepseek.com/news/news260424/) named Claude Code, OpenClaw and OpenCode and added that V4 was “Already driving our in-house agentic coding at DeepSeek.” When V4-Pro reached general availability on Aug 13, 2026, DeepSeek's [post](https://api-docs.deepseek.com/news/news260813/) announced “Native OpenAI Responses API support, optimized for Codex with one-click setup.”"
      },
      {
        "h": "An agent app that runs other agents"
      },
      {
        "p": "On Aug 17, DeepSeek published [dsh-v0.1.0-rc.7](https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.7), the first release on the DeepSeek Harness GitHub page. Its notes list “Manage Codex and Claude Code subagent tasks through the Job Panel” among its new features. The [next one](https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.8), on Aug 19, made “Claude Code and Codex subagents installable on demand as Profile Bundles.” Both are marked Pre-release on GitHub. DeepSeek's [product page](https://www.deepseek.com/en/harness/) says Harness “is now in public preview worldwide and open source,” and can run as a desktop app or a web interface. The page is undated, and the history before the Aug 17 release is not public."
      },
      {
        "h": "Shared as a research prototype"
      },
      {
        "p": "On Oct 31, the DeepSeek Harness team open-sourced [dsh-superagent-prototype](https://github.com/deepseek-ai/dsh-superagent-prototype), “a proactive coding agent for one GitHub repository, packaged as a bundle for DeepSeek Harness.” Its README opens: “Research prototype for reference only, not an official DeepSeek product,” and says the published code “is not identical to our internal version” and leaves some of the article's designs unimplemented. The team's [machine-translated English article on X](https://x.com/DeepSeekHarness/status/2116857257245987236) on Nov 1 says it “discusses architectural ideas” and “is not an introduction to existing features of DeepSeek Harness.” It says DeepSeek's internal Super-agent “is already running continuously,” and that Anthropic's “Decoupling the brain from the hands” design “takes the same approach,” with a different target: Anthropic's describes a managed service, while DeepSeek's also connects the personal machines people use every day."
      },
      {
        "table": {
          "cols": [
            "Date",
            "DeepSeek record",
            "Its words"
          ],
          "rows": [
            [
              "Aug 21, 2025",
              "[V3.1 release](https://api-docs.deepseek.com/news/news250821/)",
              "“Anthropic API format supported”"
            ],
            [
              "Apr 24, 2026",
              "[V4 Preview release](https://api-docs.deepseek.com/news/news260424/)",
              "“seamlessly integrated with leading AI agents like Claude Code, OpenClaw & OpenCode”"
            ],
            [
              "Aug 13, 2026",
              "[V4-Pro GA release](https://api-docs.deepseek.com/news/news260813/)",
              "“Native OpenAI Responses API support, optimized for Codex with one-click setup”"
            ],
            [
              "Aug 17, 2026",
              "[DeepSeek Harness dsh-v0.1.0-rc.7](https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.0-rc.7)",
              "“Manage Codex and Claude Code subagent tasks through the Job Panel”"
            ],
            [
              "Oct 31, 2026",
              "[dsh-superagent-prototype README](https://github.com/deepseek-ai/dsh-superagent-prototype)",
              "“Research prototype for reference only, not an official DeepSeek product”"
            ]
          ]
        }
      }
    ],
    "events": [
      "2025-08-21-deepseek-v3-1",
      "2026-04-24-deepseek-v4-preview",
      "2026-08-13-deepseek-v4-pro-ga",
      "2026-08-17-deepseek-harness"
    ],
    "stories": [],
    "models": [
      "deepseek-v3-1",
      "deepseek-v4-pro",
      "deepseek-v4-pro-0813"
    ]
  }
}