Enterprise network configuration changednetwork-config
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197197Claude Code requires access to the following URLs. Allowlist these in your proxy configuration and firewall rules, especially in containerized or restricted network environments. The first-run setup connectivity check points here when it can't reach `api.anthropic.com` or `platform.claude.com`; see [Unable to connect to Anthropic services](/docs/en/errors#unable-to-connect-to-anthropic-services) for the check's messages and recovery steps.
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199| URL | Required for |
200| ------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
201| `api.anthropic.com` | Claude API requests, including the WebFetch [domain safety check](/docs/en/data-usage#webfetch-domain-safety-check), feature flag fetches, and telemetry event logging |
202| `claude.ai` | claude.ai account authentication |
203| `claude.com` | claude.ai account sign-in opens a `claude.com` page in the browser, which redirects to `claude.ai`; pre-approved WebFetch documentation lookups also reach this host from the CLI |
204| `platform.claude.com` | Anthropic Console account authentication. OAuth token exchange, refresh, and revocation also go to this host for claude.ai accounts, so both Console and claude.ai sign-ins require it |
205| `mcp-proxy.anthropic.com` | [MCP connectors from claude.ai](/docs/en/mcp#use-mcp-servers-from-claude-ai), including connectors an organization administrator configures. Connector traffic routes through this proxy; connectors are enabled by default for claude.ai-authenticated users. To disable, set [`ENABLE_CLAUDEAI_MCP_SERVERS=false`](/docs/en/env-vars) or the [`disableClaudeAiConnectors`](/docs/en/settings-reference#disableclaudeaiconnectors) setting |
206| `downloads.claude.ai` | Plugin executable downloads; native installer, native auto-updater, and update version checks |
207| `storage.googleapis.com` | Plugin install counts and metadata shown in `/plugin` |
208| `storage.googleapis.com` | Native installer and native auto-updater on versions prior to 2.1.116 |
209| `registry.npmjs.org` | Plugin installs (fetching npm-source plugin packages and installing plugins' Node.js package dependencies), `npx`-launched MCP servers, and the package registry for npm and bun installs of Claude Code itself |
210| `bridge.claudeusercontent.com` | [Claude in Chrome](/docs/en/chrome) extension WebSocket bridge |
211| `*.frame.claudeusercontent.com` | [Artifact](/docs/en/artifacts) content reads. The CLI fetches an artifact's files from this host when Claude opens one, and only when the Artifact tool is [available](/docs/en/artifacts#availability) for your account. To disable the tool and drop this requirement, set [`CLAUDE_CODE_DISABLE_ARTIFACT=1`](/docs/en/env-vars) or the [`disableArtifact`](/docs/en/settings-reference#disableartifact) setting |
212| `raw.githubusercontent.com` | Changelog feed for [`/release-notes`](/docs/en/commands) and the release notes shown after updating |
213| `http-intake.logs.us5.datadoghq.com` | Operational telemetry events, sent only when the CLI uses the Anthropic API directly, never for Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry. Optional: disable with [`DISABLE_TELEMETRY`](/docs/en/data-usage#telemetry-services) or `DO_NOT_TRACK` |
214| `browser-intake-us5-datadoghq.com` | Operational error reports, sent when the CLI uses the Anthropic API directly and a server-side rollout gate enables them. Optional: disable with `DISABLE_ERROR_REPORTING` or `DISABLE_TELEMETRY`; see [Telemetry services](/docs/en/data-usage#telemetry-services) |
215| `formulae.brew.sh` | Update version checks on Homebrew installs. Other install methods don't contact this host |
216| `code.claude.com` | Claude Code documentation lookups by the built-in claude-code-guide agent and pre-approved WebFetch requests. Blocking this host only affects documentation lookups |
199| URL | Required for |
200| ------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
201| `api.anthropic.com` | Claude API requests, including the WebFetch [domain safety check](/docs/en/data-usage#webfetch-domain-safety-check), feature flag fetches, and telemetry event logging |
202| `claude.ai` | claude.ai account authentication |
203| `claude.com` | claude.ai account sign-in opens a `claude.com` page in the browser, which redirects to `claude.ai`; pre-approved WebFetch documentation lookups also reach this host from the CLI |
204| `platform.claude.com` | Anthropic Console account authentication. OAuth token exchange, refresh, and revocation also go to this host for claude.ai accounts, so both Console and claude.ai sign-ins require it |
205| `mcp-proxy.anthropic.com` | [MCP connectors from claude.ai](/docs/en/mcp#use-mcp-servers-from-claude-ai), including connectors an organization administrator configures. Connector traffic routes through this proxy; connectors are enabled by default for claude.ai-authenticated users. To stop Claude Code from fetching them, set [`ENABLE_CLAUDEAI_MCP_SERVERS=false`](/docs/en/env-vars) or the [`disableClaudeAiConnectors`](/docs/en/settings-reference#disableclaudeaiconnectors) setting |
206| `downloads.claude.ai` | Plugin executable downloads; native installer, native auto-updater, and update version checks |
207| `storage.googleapis.com` | Plugin install counts and metadata shown in `/plugin` |
208| `storage.googleapis.com` | Native installer and native auto-updater on versions prior to 2.1.116 |
209| `registry.npmjs.org` | Plugin installs (fetching npm-source plugin packages and installing plugins' Node.js package dependencies), `npx`-launched MCP servers, and the package registry for npm and bun installs of Claude Code itself |
210| `bridge.claudeusercontent.com` | [Claude in Chrome](/docs/en/chrome) extension WebSocket bridge |
211| `*.frame.claudeusercontent.com` | [Artifact](/docs/en/artifacts) content reads. The CLI fetches an artifact's files from this host when Claude opens one, and only when the Artifact tool is [available](/docs/en/artifacts#availability) for your account. To disable the tool and drop this requirement, set [`CLAUDE_CODE_DISABLE_ARTIFACT=1`](/docs/en/env-vars) or the [`disableArtifact`](/docs/en/settings-reference#disableartifact) setting |
212| `raw.githubusercontent.com` | Changelog feed for [`/release-notes`](/docs/en/commands) and the release notes shown after updating |
213| `http-intake.logs.us5.datadoghq.com` | Operational telemetry events, sent only when the CLI uses the Anthropic API directly, never for Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry. Optional: disable with [`DISABLE_TELEMETRY`](/docs/en/data-usage#telemetry-services) or `DO_NOT_TRACK` |
214| `browser-intake-us5-datadoghq.com` | Operational error reports, sent when the CLI uses the Anthropic API directly and a server-side rollout gate enables them. Optional: disable with `DISABLE_ERROR_REPORTING` or `DISABLE_TELEMETRY`; see [Telemetry services](/docs/en/data-usage#telemetry-services) |
215| `formulae.brew.sh` | Update version checks on Homebrew installs. Other install methods don't contact this host |
216| `code.claude.com` | Claude Code documentation lookups by the built-in claude-code-guide agent and pre-approved WebFetch requests. Blocking this host only affects documentation lookups |
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218218If you install Claude Code through npm or manage your own binary distribution, end users don't need the native installer and auto-updater uses of `downloads.claude.ai`, but npm and bun installs need their package registry, `registry.npmjs.org`, unless your organization mirrors it. The other uses in the table apply regardless of install method.
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