overview changedagents-and-tools/mcp-tunnels/overview
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## Availability ### API support #### [Messages API](https://platform.claude.com/docs/en/build-with-claude/working-with-messages) #### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) ### Required beta headers ### Data handling
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22title: MCP tunnels
33url: https://platform.claude.com/docs/en/agents-and-tools/mcp-tunnels/overview
44description: Securely connect Claude to MCP servers running in your private network without opening inbound ports or exposing services to the public internet.
5featureMetadata:
6 status: research-preview
7 betaHeader: mcp-client-2026-09-15, mcp-client-2025-11-20
8 zdr:
9 eligibility: not-eligible
10 note: Research preview. The MCP tunnels security page describes the data-flow boundary and subprocessor details.
11 supportedModels:
12 - claude-fable-5-1
13 - claude-mythos-5-1
14 - claude-fable-5
15 - claude-mythos-5
16 - claude-mythos-preview
17 - claude-opus-5-5
18 - claude-opus-5
19 - claude-sonnet-5-5
20 - claude-sonnet-5
21 - claude-haiku-5-5
22 - claude-haiku-4-5-20251001
23 - claude-opus-4-8
24 - claude-opus-4-7
25 - claude-opus-4-6
26 - claude-sonnet-4-6
27 - claude-opus-4-5-20251101
28 - claude-sonnet-4-5-20250929
29 supportedPlatforms:
30 Claude API: research-preview
531---
632
7MCP tunnels let you connect Claude to Model Context Protocol (MCP) servers that run inside your private network. Traffic flows over an outbound-only connection, so you don’t need to open inbound firewall ports, expose services to the public internet, or allowlist Anthropic’s IP ranges on your origin.
8
933<Note>
10 MCP tunnels are in research preview. [Request access](https://claude.com/form/mcp-tunnels) to try them. They are provided “as-is” without any uptime, support, or continuity commitment, and they depend on a third-party network provider (Cloudflare) that makes no availability commitment for the underlying transport. Anthropic may modify or discontinue MCP tunnels at any time.
34 MCP tunnels are in research preview.
35
36 MCP tunnels are in research preview. They are provided “as-is” without any uptime, support, or continuity commitment, and they depend on a third-party network provider (Cloudflare) that makes no availability commitment for the underlying transport. Anthropic may modify or discontinue MCP tunnels at any time.
37
38 * [Request access](https://claude.com/form/mcp-tunnels)
1139</Note>
1240
13For Zero Data Retention and HIPAA BAA eligibility, see [API and data retention](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#feature-eligibility).
41MCP tunnels let you connect Claude to Model Context Protocol (MCP) servers that run inside your private network. Traffic flows over an outbound-only connection, so you don’t need to open inbound firewall ports, expose services to the public internet, or allowlist Anthropic’s IP ranges on your origin.
1442
1543## How it works
1644
from line 424
396424 Use tunneled servers from the Messages API.
397425 </Card>
398426</CardGroup>
427
428## Availability
429
430MCP tunnels are in research preview on every model.
431
432### API support
433
434#### [Messages API](https://platform.claude.com/docs/en/build-with-claude/working-with-messages)
435
436* Availability: Available
437
438| Status | Cloud platforms |
439| ---------------- | --------------- |
440| Research preview | Claude API |
441
442#### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview)
443
444* Availability: Available
445
446| Status | Cloud platforms |
447| ---------------- | --------------- |
448| Research preview | Claude API |
449
450### Required beta headers
451
452[Beta headers overview](https://platform.claude.com/docs/en/api/beta-headers)
453
454Beta headers allow you to access experimental features and new model capabilities before they become part of the standard API.
455
456| Header | APIs |
457| -------------------------------------------------- | ------------------------------------------------------------------------------------------- |
458| `mcp-client-2026-09-15` or `mcp-client-2025-11-20` | [Messages API](https://platform.claude.com/docs/en/build-with-claude/working-with-messages) |
459
460### Data handling
461
462[Data handling overview](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#feature-eligibility)
463
464| Item | Zero data retention | HIPAA |
465| ------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ |
466| Status | Not eligible | Not eligible |
467| Details | Research preview. The MCP tunnels security page describes the data-flow boundary and subprocessor details. [Learn more](https://platform.claude.com/docs/en/agents-and-tools/mcp-tunnels/security) | — |
468
469Applicable endpoints:
470
471* `/v1/tunnels`
399472
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