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    Slack ↔ WxO MCP Gateway

    mcpkey · package
    io.github.markusvankempen/slack-wxo-mcp-gateway · v1.0.3
    deploy just this

    Lifts WxO Slack limits: every-message wake-up, multi-channel MCP. https://markusvankempen.github.io/

    run it

    on your own machines, one way per deploy method
    generated from the record, not tested yet
    # once, as root:
    # as_mcp DIR COMMAND...: runs COMMAND as the mcp user in DIR, its home, sandboxed as the
    # units are: a package's install scripts can write to DIR only, as the server later can
    as_mcp() {
      local dir="$1"; shift
      systemd-run --quiet --wait --pipe --collect --uid=mcp --gid=mcp \
        -p WorkingDirectory="$dir" -p Environment=HOME="$dir" -p ReadWritePaths="$dir" \
        -p NoNewPrivileges=true -p ProtectSystem=strict -p ProtectHome=true -p PrivateTmp=true \
        -- "$@" </dev/null
    }
    install -d -m 0750 -o mcp -g mcp /var/lib/mcp/slack-wxo-mcp-gateway
    # slack-wxo-mcp-gateway: its packages, installed whole before its unit starts (no session installs)
    # npx takes a half-installed tree for installed: a rerun starts them afresh
    systemctl stop mcp-my-agent-slack-wxo-mcp-gateway.service 2>/dev/null || true
    as_mcp /var/lib/mcp/slack-wxo-mcp-gateway rm -rf /var/lib/mcp/slack-wxo-mcp-gateway/.npm/_npx
    as_mcp /var/lib/mcp/slack-wxo-mcp-gateway npx --yes --package=@markusvankempen/[email protected] -- true
    as_mcp /var/lib/mcp/slack-wxo-mcp-gateway npx --yes --package=supergateway@4 -- true
    
    #!/usr/bin/env bash
    # slack-wxo-mcp-gateway (io.github.markusvankempen/slack-wxo-mcp-gateway), recipe baremetal (generated).
    # Generated by Hub for toolset "my-agent"; started by mcp-my-agent-slack-wxo-mcp-gateway.service.
    set -euo pipefail
    export HOST=127.0.0.1 PORT=8101
    exec npx -y supergateway@4 --stdio 'npx -y @markusvankempen/[email protected]' --outputTransport streamableHttp --stateful --host 127.0.0.1 --port 8101 --streamableHttpPath /mcp --healthEndpoint /healthz
    
    [Unit]
    Description=MCP server slack-wxo-mcp-gateway (toolset my-agent), generated by Hub
    After=network-online.target
    Wants=network-online.target
    
    [Service]
    Type=simple
    User=mcp
    Group=mcp
    EnvironmentFile=/etc/mcp/my-agent.env
    Environment=HOME=/var/lib/mcp/slack-wxo-mcp-gateway
    WorkingDirectory=/var/lib/mcp/slack-wxo-mcp-gateway
    ExecStart=/opt/mcp/my-agent/bin/slack-wxo-mcp-gateway.sh
    Restart=on-failure
    RestartSec=5
    NoNewPrivileges=true
    ProtectSystem=strict
    ProtectHome=true
    PrivateTmp=true
    ReadWritePaths=/var/lib/mcp/slack-wxo-mcp-gateway
    
    [Install]
    WantedBy=multi-user.target
    
    generated from the record, not tested yet
    docker run --rm -p 127.0.0.1:8101:8000 -e SLACK_BOT_TOKEN -e WXO_INSTANCE_URL -e WXO_API_KEY -e WXO_AGENT_ID -e GATEWAY_TRANSPORT -e SLACK_SIGNING_SECRET node:22-alpine sh -c 'npx -y supergateway@4 --stdio '"'"'npx -y @markusvankempen/[email protected]'"'"' --outputTransport streamableHttp --stateful --host 0.0.0.0 --port 8000 --streamableHttpPath /mcp --healthEndpoint /healthz'
    
    generated from the record, not tested yet
    # Generated by Hub for toolset "my-agent" (2026-10-19T03:58:34+00:00).
    # Each package server runs behind a stdio->HTTP bridge and listens on localhost only.
    #   cp .env.example .env    # fill the ${VAR}s
    #   docker compose up -d && bash smoke.sh
    # Remote servers are not here: clients reach them directly (see clients/).
    name: mcp-my-agent
    services:
      slack-wxo-mcp-gateway:
        image: node:22-alpine
        command:
        - sh
        - -c
        - npx -y supergateway@4 --stdio 'npx -y @markusvankempen/[email protected]' --outputTransport
          streamableHttp --stateful --host 0.0.0.0 --port 8000 --streamableHttpPath /mcp --healthEndpoint
          /healthz
        ports:
        - 127.0.0.1:8101:8000
        volumes:
        - npm-cache:/root/.npm
        healthcheck:
          test:
          - CMD-SHELL
          - wget -qO- http://127.0.0.1:8000/healthz || exit 1
          interval: 30s
          timeout: 5s
          retries: 5
          start_period: 2m
        restart: unless-stopped
        environment:
          SLACK_BOT_TOKEN: ${SLACK_BOT_TOKEN}
          WXO_INSTANCE_URL: ${WXO_INSTANCE_URL}
          WXO_API_KEY: ${WXO_API_KEY}
          WXO_AGENT_ID: ${WXO_AGENT_ID}
          GATEWAY_TRANSPORT: ${GATEWAY_TRANSPORT}
          SLACK_SIGNING_SECRET: ${SLACK_SIGNING_SECRET}
    volumes:
      npm-cache: {}
      uv-cache: {}
    
    generated from the record, not tested yet
    # Generated by Hub for toolset "my-agent" (2026-10-19T03:58:34+00:00).
    #   kubectl create namespace mcp
    #   kubectl -n mcp create secret generic mcp-credentials --from-env-file=.env
    #   kubectl apply -f kubernetes.yaml
    # Services are cluster-internal: <name>.mcp.svc.cluster.local:8000/mcp. Put an ingress
    # with auth in front before exposing any of them.
    apiVersion: v1
    kind: Namespace
    metadata:
      name: mcp
    ---
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: slack-wxo-mcp-gateway
      namespace: mcp
      labels: &id001
        app: slack-wxo-mcp-gateway
    spec:
      replicas: 1
      selector:
        matchLabels: *id001
      template:
        metadata:
          labels: *id001
        spec:
          containers:
          - name: slack-wxo-mcp-gateway
            image: node:22-alpine
            ports:
            - containerPort: 8000
              name: http
            env:
            - name: SLACK_BOT_TOKEN
              valueFrom:
                secretKeyRef:
                  name: mcp-credentials
                  key: SLACK_BOT_TOKEN
            - name: WXO_INSTANCE_URL
              valueFrom:
                secretKeyRef:
                  name: mcp-credentials
                  key: WXO_INSTANCE_URL
            - name: WXO_API_KEY
              valueFrom:
                secretKeyRef:
                  name: mcp-credentials
                  key: WXO_API_KEY
            - name: WXO_AGENT_ID
              valueFrom:
                secretKeyRef:
                  name: mcp-credentials
                  key: WXO_AGENT_ID
            - name: GATEWAY_TRANSPORT
              valueFrom:
                secretKeyRef:
                  name: mcp-credentials
                  key: GATEWAY_TRANSPORT
            - name: SLACK_SIGNING_SECRET
              valueFrom:
                secretKeyRef:
                  name: mcp-credentials
                  key: SLACK_SIGNING_SECRET
            args:
            - sh
            - -c
            - npx -y supergateway@4 --stdio 'npx -y @markusvankempen/[email protected]' --outputTransport
              streamableHttp --stateful --host 0.0.0.0 --port 8000 --streamableHttpPath /mcp --healthEndpoint
              /healthz
            readinessProbe:
              httpGet:
                path: /healthz
                port: http
              initialDelaySeconds: 10
    ---
    apiVersion: v1
    kind: Service
    metadata:
      name: slack-wxo-mcp-gateway
      namespace: mcp
    spec:
      selector:
        app: slack-wxo-mcp-gateway
      ports:
      - port: 8000
        targetPort: http
        name: http
    
    generated from the record, not tested yet
    # Generated by Hub for toolset "my-agent" (2026-10-19T03:58:34+00:00).
    # Credentials come from the Secret 'mcp-credentials' (kubectl create secret generic ... --from-env-file=.env).
    # Each server under `servers` is one Deployment + Service; the keys after it configure
    # upstream charts a worker verified.
    servers:
      slack-wxo-mcp-gateway:
        enabled: true
        replicas: 1
        port: 8000
        path: /mcp
        container:
          name: slack-wxo-mcp-gateway
          image: node:22-alpine
          ports:
          - containerPort: 8000
            name: http
          env:
          - name: SLACK_BOT_TOKEN
            valueFrom:
              secretKeyRef:
                name: mcp-credentials
                key: SLACK_BOT_TOKEN
          - name: WXO_INSTANCE_URL
            valueFrom:
              secretKeyRef:
                name: mcp-credentials
                key: WXO_INSTANCE_URL
          - name: WXO_API_KEY
            valueFrom:
              secretKeyRef:
                name: mcp-credentials
                key: WXO_API_KEY
          - name: WXO_AGENT_ID
            valueFrom:
              secretKeyRef:
                name: mcp-credentials
                key: WXO_AGENT_ID
          - name: GATEWAY_TRANSPORT
            valueFrom:
              secretKeyRef:
                name: mcp-credentials
                key: GATEWAY_TRANSPORT
          - name: SLACK_SIGNING_SECRET
            valueFrom:
              secretKeyRef:
                name: mcp-credentials
                key: SLACK_SIGNING_SECRET
          args:
          - sh
          - -c
          - npx -y supergateway@4 --stdio 'npx -y @markusvankempen/[email protected]' --outputTransport
            streamableHttp --stateful --host 0.0.0.0 --port 8000 --streamableHttpPath /mcp --healthEndpoint
            /healthz
          readinessProbe:
            httpGet:
              path: /healthz
              port: http
            initialDelaySeconds: 10
    
    # helm install my-agent helm/my-agent -n mcp
    

    in the cloud

    one click: the provider's deploy form opens filled in, in your own account
    koyeb

    The form opens with CHANGE_ME for each value you supply: SLACK_BOT_TOKEN, WXO_INSTANCE_URL, WXO_API_KEY, WXO_AGENT_ID, GATEWAY_TRANSPORT, SLACK_SIGNING_SECRET. Fill them in before you deploy.

    Clients connect to the service's https://…koyeb.app address plus /mcp.

    azure

    A Container Apps environment with one app per server, each with HTTPS ingress and one replica. The portal asks for each value you supply as a secure parameter; the deployment's outputs list the endpoints.

    connect to it

    copy what your client needs
    npx -y @markusvankempen/[email protected]
    # env: SLACK_BOT_TOKEN, WXO_INSTANCE_URL, WXO_API_KEY, WXO_AGENT_ID, GATEWAY_TRANSPORT, SLACK_SIGNING_SECRET
    {
      "mcpServers": {
        "slack-wxo-mcp-gateway": {
          "command": "npx",
          "args": [
            "-y",
            "@markusvankempen/[email protected]"
          ],
          "env": {
            "SLACK_BOT_TOKEN": "${SLACK_BOT_TOKEN}",
            "WXO_INSTANCE_URL": "${WXO_INSTANCE_URL}",
            "WXO_API_KEY": "${WXO_API_KEY}",
            "WXO_AGENT_ID": "${WXO_AGENT_ID}",
            "GATEWAY_TRANSPORT": "${GATEWAY_TRANSPORT}",
            "SLACK_SIGNING_SECRET": "${SLACK_SIGNING_SECRET}"
          }
        }
      }
    }
    #!/usr/bin/env bash
    # Registers every server with Claude Code (run once; `claude mcp list` to check).
    set -euo pipefail
    set -a; [ -f .env ] && source .env; set +a
    claude mcp add slack-wxo-mcp-gateway -e "SLACK_BOT_TOKEN=${SLACK_BOT_TOKEN}" -e "WXO_INSTANCE_URL=${WXO_INSTANCE_URL}" -e "WXO_API_KEY=${WXO_API_KEY}" -e "WXO_AGENT_ID=${WXO_AGENT_ID}" -e "GATEWAY_TRANSPORT=${GATEWAY_TRANSPORT}" -e "SLACK_SIGNING_SECRET=${SLACK_SIGNING_SECRET}" -- npx -y @markusvankempen/[email protected]
    
    {
      "mcpServers": {
        "slack-wxo-mcp-gateway": {
          "command": "npx",
          "args": [
            "-y",
            "@markusvankempen/[email protected]"
          ],
          "env": {
            "SLACK_BOT_TOKEN": "${SLACK_BOT_TOKEN}",
            "WXO_INSTANCE_URL": "${WXO_INSTANCE_URL}",
            "WXO_API_KEY": "${WXO_API_KEY}",
            "WXO_AGENT_ID": "${WXO_AGENT_ID}",
            "GATEWAY_TRANSPORT": "${GATEWAY_TRANSPORT}",
            "SLACK_SIGNING_SECRET": "${SLACK_SIGNING_SECRET}"
          }
        }
      }
    }
    {
      "servers": {
        "slack-wxo-mcp-gateway": {
          "type": "stdio",
          "command": "npx",
          "args": [
            "-y",
            "@markusvankempen/[email protected]"
          ],
          "env": {
            "SLACK_BOT_TOKEN": "${SLACK_BOT_TOKEN}",
            "WXO_INSTANCE_URL": "${WXO_INSTANCE_URL}",
            "WXO_API_KEY": "${WXO_API_KEY}",
            "WXO_AGENT_ID": "${WXO_AGENT_ID}",
            "GATEWAY_TRANSPORT": "${GATEWAY_TRANSPORT}",
            "SLACK_SIGNING_SECRET": "${SLACK_SIGNING_SECRET}"
          }
        }
      }
    }
    name: my-agent
    target: local
    servers:
    - hub: io.github.markusvankempen/slack-wxo-mcp-gateway
    
    • not probed yet: tools unpinned, ingest lists them

    tools

    Probe result: needs authdocker: credentials=placeholder: no MCP server found (:8000/mcp: HTTP 404: MCPError: MCP server process failed; :8000/: HTTP 404: MCPError: Not Found) …6e1-760a8bea03b2, caused by child process failure [supergateway] StreamableHttp connection closed (session b4d3743d-bfbd-4e44-a6e1-760a8bea03b2) [supergateway] Response finished b4d3743d-bfbd-4e44-a6e1-760a8bea03b2 [supergateway] Child stderr: [slack-wxo-mcp-gateway] Python 3.10+ is required. Docs: https://<host>/markusvankempen/slack-wxo-mcp-gateway [supergateway] MCP child failed: Error: Child stdout closed at Socket.<anonymous> (file://<path>:53:43) at Socket.emit (node:events:531:35) at endReadableNT (node:internal/streams/readable:1698:12) at process.processTicksAndRejections (node:internal/process/task_queues:89:21) [supergateway] MCP child request failed: Error: Child stdout closed at Socket.<anonymous> (file://<path>:53:43) at Socket.emit (node:events:531:35) at endReadableNT (node:internal/streams/readable:1698:12) at process.processTicksAndRejections (node:internal/process/task_queues:89:21) [supergateway] Child stderr: [slack-wxo-mcp-gateway] Python 3.10+ is required. Docs: https://<host>/markusvankempen/slack-wxo-mcp-gateway [supergateway] Child exited: code=1, signal=null [supergateway] Child stderr: [slack-wxo-mcp-gateway] Python 3.10+ is required. Docs: https://<host>/markusvankempen/slack-wxo-mcp-gateway [supergateway] Child exited: code=1, signal=null; baremetal: same crash as docker

    runs · 1

    the latest tests of this entry by the hub and its workers, newest first
    dateworkermethodstatussandboxreason
    2026-10-19 02:56 local-mac-vm docker needs auth gvisor docker: credentials=placeholder: no MCP server found (:8000/mcp: HTTP 404: MCPError: MCP server process failed; :8000/: HTTP 404: MCPError: Not Found) …6e1-760a…