{
  "id": "agentVersion:copilot:1-0-57",
  "_kind": "AgentVersion",
  "_file": "agent-stack/agent-versions/upstream-current-2026-06-01.yaml",
  "_cluster": "agent-stack",
  "attributes": {
    "agentId": "copilot",
    "agentProductId": "agent:copilot-cli",
    "displayName": "GitHub Copilot CLI 1.0.57",
    "runtimeFamily": "cli-harness",
    "releaseChannel": "stable",
    "versionRange": "1.0.57",
    "currentVersion": "1.0.57",
    "releasedAt": "2026-06-01",
    "sourcePackage": "@github/copilot",
    "upstreamReleaseTag": "v1.0.57",
    "releaseNotesUrl": "https://github.com/github/copilot-cli/releases/tag/v1.0.57",
    "cliCommand": "gh copilot",
    "summary": "GitHub Copilot CLI stable release updating process cancellation, plugin command feedback, MCP policy/status behavior, transport defaults, hook denial semantics, and several TUI/session surfaces.",
    "assimilationNotes": [
      "Issue #861 tracks npm latest moving from the graph's 1.0.57-3 prerelease record to stable 1.0.57.",
      "Canceling a running shell command now terminates the whole process tree, including sandboxed and background-promoted shells.",
      "Plugin slash commands show immediate progress feedback for install, uninstall, update, and marketplace operations.",
      "Default networking transport is HTTP/1.1; COPILOT_ENABLE_HTTP2=1 opts into HTTP/2.",
      "Azure DevOps-only repositories keep the built-in GitHub MCP server enabled with only the web_search tool.",
      "MCP server timeout configuration is preserved after tool-list changes, and npx --registry MCP servers are no longer incorrectly blocked by policy.",
      "preToolUse hook errors now deny the tool call instead of silently allowing execution.",
      "COPILOT_HOME is honored for the server discovery registry directory.",
      "Canvas providers can return file:// URLs for local file previews, and symlinked directories appear in /cwd completion.",
      "No install method change; gh extension install github/gh-copilot remains the modeled install path."
    ],
    "releaseHighlights": [
      "Whole process-tree cancellation for interrupted shell/agent commands.",
      "HTTP/1.1 default transport with COPILOT_ENABLE_HTTP2 opt-in.",
      "preToolUse hook errors deny tool calls.",
      "MCP policy/status fixes and repo-level plugin marketplace behavior.",
      "Canvas file:// preview support and symlinked /cwd completion."
    ],
    "installMethods": [
      "install:gh-extension"
    ],
    "adapterMetadata": {},
    "releaseTracking": {
      "issue": 861,
      "oldGraphVersion": "1.0.57-3",
      "upstreamVersion": "1.0.57",
      "packageLatest": "1.0.57",
      "packagePrerelease": "1.0.57-5",
      "releasePublishedAt": "2026-06-01T18:40:11Z",
      "packageModifiedAt": "2026-06-01T18:36:17.935Z"
    },
    "transportDefaults": {
      "defaultProtocol": "http/1.1",
      "http2OptInEnv": "COPILOT_ENABLE_HTTP2"
    },
    "cancellationBehavior": {
      "shellInterruptTerminatesProcessTree": true,
      "appliesTo": [
        "sandboxed-shell",
        "background-promoted-shell"
      ]
    },
    "pluginMarketplaceFeedback": {
      "slashCommandsShowImmediateProgress": [
        "install",
        "uninstall",
        "update",
        "marketplace"
      ]
    },
    "hookSemantics": {
      "preToolUseErrorBehavior": "deny-tool-call"
    },
    "mcpBehavior": {
      "azureDevopsOnlyGithubMcpTools": [
        "web_search"
      ],
      "preservesTimeoutConfigAfterToolListChanges": true,
      "allowsNpxRegistryServers": true
    },
    "environmentVariables": [
      {
        "name": "COPILOT_ENABLE_HTTP2",
        "purpose": "Opt into HTTP/2 transport when the default is HTTP/1.1."
      },
      {
        "name": "COPILOT_HOME",
        "purpose": "Override the server discovery registry directory."
      }
    ],
    "canvasPreview": {
      "localFilePreviewUrlScheme": "file://"
    },
    "cwdCompletion": {
      "includesSymlinkedDirectories": true
    },
    "startupTips": {
      "showTipsOnStartupSetting": true
    },
    "diffBehavior": {
      "defaultsToBranchDiffWhenNoUnstagedChanges": true
    }
  },
  "outgoingEdges": [
    {
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      "to": "agent:copilot-cli",
      "kind": "version_of"
    },
    {
      "from": "agentVersion:copilot:1-0-57",
      "to": "evidence:copilot-cli-1-0-57-issue-861-release",
      "kind": "sourced_from"
    },
    {
      "from": "agentVersion:copilot:1-0-57",
      "to": "agent:copilot-cli",
      "kind": "version_of"
    },
    {
      "from": "agentVersion:copilot:1-0-57",
      "to": "evidence:copilot-cli-1-0-57-issue-861-release",
      "kind": "sourced_from"
    },
    {
      "from": "agentVersion:copilot:1-0-57",
      "to": "install:gh-extension",
      "kind": "installed_via"
    }
  ],
  "incomingEdges": [
    {
      "from": "agent:copilot-cli",
      "to": "agentVersion:copilot:1-0-57",
      "kind": "has_version"
    },
    {
      "from": "evidence:copilot-cli-1-0-57-issue-861-release",
      "to": "agentVersion:copilot:1-0-57",
      "kind": "references"
    },
    {
      "from": "evidence:copilot-cli-1-0-57-issue-861-release",
      "to": "agentVersion:copilot:1-0-57",
      "kind": "references"
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  ]
}