Technology · Agentic → Agentic Gateways · Open Source · wiki:deep
Supergateway
Supergateway bridges MCP over SSE and stdio transports — plumbing that exposes local MCP servers to remote agent hosts. It is transport glue in the MCP ecosystem. Relevant when desktop/local tools must be reached by cloud workers (or vice versa). Put authentication and allowlists in front; a bridge without policy is an attack path. Run MCP stdio servers over SSE and SSE over stdio. AI gateway. Supergateway runs MCP stdio-based servers over SSE (Server-Sent Events) or WebSockets (WS) with one command. This is useful for remote access, debugging, or connecting to clients when your MCP server only supports stdio. Supported by Supermachine (hosted MCPs), Superinterface, and Supercorp. - --stdio "command": Command that runs an MCP server over stdio - --sse "https://mcp-server-ab71a6b2-cd55-49d0-adba-562bc85956e3.supermachine.app": SSE URL to connect to (SSE→stdio mode) -.
Why it matters here
In this catalog it is the Agentic Gateways option when you need to front agents and MCP/tool surfaces safely. Keep Supergateway on the observe/propose side of the loop: useful signals and drafts, with human or policy authority still required before anything irreversible runs.
How it works
Clients connect to the gateway/registry; it authenticates, discovers MCP/agent servers, and proxies tool or agent traffic under configured policy.
- Register or discover the MCP/agent servers the gateway will front.
- Configure authn/z and allow-lists for tools.
- Proxy a tool call from a test agent and verify policy denials.
- Cut agent runtimes over to the gateway endpoint.
Related: model-context-protocol · mcp-servers-reference · agent-gateway · topics/03-channels · topics/12-central-nervous-system
When to reach for it
- Use when: Supergateway bridges MCP over SSE and stdio transports — plumbing that exposes local MCP servers to remote agent hosts matches the bottleneck and you specifically need to front agents and MCP/tool surfaces safely.
- Skip when: another pack already covers the need with less ops surface, or Supergateway would become a second place people retype truth.
- Prefer instead: compare Model Context Protocol, MCP Servers (reference), Agent Gateway before locking the cell.
Limits
- Ops: confirm license, hosting, and release cadence for Supergateway (supercorp-ai/supergateway) before relying on it in a live corridor.
- Integration: bad credentials, scopes, or schema drift produce empty retrievals or runaway tool/model spend without an obvious UI alarm.
- Scope: Agentic Gateways components support agents; they are not the company ledger or the approval authority.
What we checked
Claims below are backed by science sources on disk.
Primary / product role
supercorp-ai/supergateway · MODERATE
“Run MCP stdio servers over SSE and SSE over stdio. AI gateway.”
Docs or contrast
MCP · MODERATE
“Model Context Protocol servers”
Additional source
FastMCP contrast · MODERATE
“Supergateway bridges MCP over SSE and stdio transports — plumbing that exposes local MCP servers to remote agent hosts. It is transport glue in the MCP ecosystem.”
Research inventory
9 tags · 12 out · 13 in · 3 artifacts · 1 gaps · 17 corpus docs
Catalog tags
- landscape.layer
- Agentic
- landscape.subcategory
- Agentic Gateways
- license_tag
- Open Source
- maps.dm
- absent
- maps.features
- 6
- one_liner
- Agentic Gateways
- review.depth
- science
- slug
- supergateway
- title
- Supergateway
Artifacts
- dm_map · absent
- features_map · present · technologies/supergateway/features.md
- readme · present · technologies/supergateway/README.md
Out · alternative_to
- agent-gatewaytechnology
- fastmcptechnology
- mcp-gateway-registrytechnology
- mcp-registrytechnology
- mcp-servers-referencetechnology
- openclawtechnology
Out · maps_to
- agent-identity-interoperabilityfeature
- agent-supply-chainfeature
- apis-sdks-mcp-extensibilityfeature
- integrations-tool-callingfeature
- mcp-toolsfeature
- wt-tools-actionsfeature
In · alternative_to
- agent-gatewaytechnology
- fastmcptechnology
- mcp-gateway-registrytechnology
- mcp-registrytechnology
- mcp-servers-referencetechnology
- openclawtechnology
In · in_stack
- agentic-agentic-gatewaysstack · alternative_slot
In · maps_to
- agent-identity-interoperabilityfeature
- agent-supply-chainfeature
- apis-sdks-mcp-extensibilityfeature
- integrations-tool-callingfeature
- mcp-toolsfeature
- wt-tools-actionsfeature
Corpus tags
- category
- Agentic → Agentic Gateways
- dedication
- open-source
- feature
- agent-identity-interoperabilityagent-supply-chainapis-sdks-mcp-extensibilityintegrations-tool-callingmcp-toolswt-tools-actions
- kind
- map_edgetech_featurestech_quotetech_readme
- needs_deepen
- false
- quality
- ok
- slug
- supergateway
- source_id
- fastmcp-contrastmcp-specsupergateway-github
- technology
- supergateway
Corpus documents (17)
map_edge · 6
- supergateway → agent-identity-interoperability
- supergateway → agent-supply-chain
- supergateway → apis-sdks-mcp-extensibility
- supergateway → integrations-tool-calling
- supergateway → mcp-tools
- supergateway → wt-tools-actions
tech_features · 1
- Supergateway · features
tech_quote · 9
- Supergateway · fastmcp-contrast
- Supergateway · fastmcp-contrast
- Supergateway · fastmcp-contrast
- Supergateway · mcp-spec
- Supergateway · mcp-spec
- Supergateway · mcp-spec
- Supergateway · supergateway-github
- Supergateway · supergateway-github
- … +1 more
tech_readme · 1
- Supergateway