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Feat/add headers to custom mcp (#4581) 

* add headers to custom mcp

* Refactor MCP fetch method and update CustomMCP documentation to include variable usage in headers
This commit is contained in:
Henry Heng 2025-06-07 16:23:42 +01:00 committed by GitHub
parent 02a6753498
commit 6495c64dac
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2 changed files with 31 additions and 2 deletions
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10
packages/components/nodes/tools/MCP/CustomMCP/CustomMCP.ts
View File

@ -27,6 +27,16 @@ For example, you have a variable called "var1":
}
}
\`\`\`
For example, when using SSE, you can use the variable "var1" in the headers:
\`\`\`json
{
"url": "https://api.example.com/endpoint/sse",
"headers": {
"Authorization": "Bearer {{$vars.var1}}"
}
}
\`\`\`
`
class Custom_MCP implements INode {

19
packages/components/nodes/tools/MCP/core.ts
View File

@ -53,10 +53,29 @@ export class MCPToolkit extends BaseToolkit {
const baseUrl = new URL(this.serverParams.url)
try {
if (this.serverParams.headers) {
transport = new StreamableHTTPClientTransport(baseUrl, {
requestInit: {
headers: this.serverParams.headers
}
})
} else {
transport = new StreamableHTTPClientTransport(baseUrl)
}
await client.connect(transport)
} catch (error) {
if (this.serverParams.headers) {
transport = new SSEClientTransport(baseUrl, {
requestInit: {
headers: this.serverParams.headers
},
eventSourceInit: {
fetch: (url, init) => fetch(url, { ...init, headers: this.serverParams.headers })
}
})
} else {
transport = new SSEClientTransport(baseUrl)
}
await client.connect(transport)
}
}