{
  "id": "agentVersion:claude:2-1-201",
  "_kind": "AgentVersion",
  "_file": "agent-stack/agent-versions/upstream-current-2026-07-06.yaml",
  "_cluster": "agent-stack",
  "attributes": {
    "agentId": "claude",
    "agentProductId": "agent:claude-code",
    "displayName": "Claude Code 2.1.201",
    "runtimeFamily": "cli-harness",
    "releaseChannel": "stable",
    "versionRange": "2.1.201",
    "currentVersion": "2.1.201",
    "releasedAt": "2026-07-03",
    "sourcePackage": "@anthropic-ai/claude-code",
    "upstreamReleaseTag": "v2.1.201",
    "releaseNotesUrl": "https://github.com/anthropics/claude-code/releases/tag/v2.1.201",
    "cliCommand": "claude",
    "summary": "Claude Code release changing Claude Sonnet 5 harness reminder injection so sessions no longer use the mid-conversation system role for those reminders.",
    "assimilationNotes": [
      "Latest npm moved from recorded 2.1.199 to 2.1.201.",
      "Claude Sonnet 5 sessions no longer use the mid-conversation system role for harness reminders, affecting prompt assembly and transcript-role expectations in Claude adapter tests.",
      "No package-name, install-method, CLI flag, transport/API, model default, or migration change was published for this release.",
      "Install command remains npm install -g @anthropic-ai/claude-code."
    ],
    "releaseHighlights": [
      "Harness reminders for Claude Sonnet 5 avoid the mid-conversation system role."
    ],
    "installMethods": [
      "install:npm"
    ]
  },
  "outgoingEdges": [
    {
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      "to": "agent:claude-code",
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    },
    {
      "from": "agentVersion:claude:2-1-201",
      "to": "evidence:claude-code-2-1-201-2026-07-06",
      "kind": "sourced_from"
    },
    {
      "from": "agentVersion:claude:2-1-201",
      "to": "install:npm",
      "kind": "installed_via"
    }
  ],
  "incomingEdges": [
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    }
  ]
}