x=hub

your toolset

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    mailsnail

    mcpkey · package
    io.github.iancollins27/mailsnail · v0.6.0
    deploy just this

    Send USPS letters, postcards & certified mail from any agent. No signup; pay-per-piece via Stripe.

    run it

    on your own machines, one way per deploy method
    generated from the record, not tested yet
    #!/usr/bin/env bash
# mailsnail (io.github.iancollins27/mailsnail), recipe baremetal (generated).
# Generated by Hub for toolset "my-agent"; started by mcp-my-agent-mailsnail.service.
set -euo pipefail
export HOST=127.0.0.1 PORT=8101
exec npx -y supergateway@4 --stdio 'npx -y [email protected]' --outputTransport streamableHttp --stateful --host 127.0.0.1 --port 8101 --streamableHttpPath /mcp --healthEndpoint /healthz

[Unit]
Description=MCP server mailsnail (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/mailsnail
WorkingDirectory=/var/lib/mcp/mailsnail
ExecStart=/opt/mcp/my-agent/bin/mailsnail.sh
Restart=on-failure
RestartSec=5
NoNewPrivileges=true
ProtectSystem=strict
ProtectHome=true
PrivateTmp=true
ReadWritePaths=/var/lib/mcp/mailsnail

[Install]
WantedBy=multi-user.target
    generated from the record, not tested yet
    docker run --rm -p 127.0.0.1:8101:8000 -e MAIL_PROVIDER -e MAIL_API_BASE_URL -e CLICK2MAIL_USERNAME -e CLICK2MAIL_PASSWORD -e LOB_API_KEY -e MAIL_MCP_ALLOW_LIVE -e MAIL_MCP_SPEND_CAP_USD node:22-alpine sh -c 'npx -y supergateway@4 --stdio '"'"'npx -y [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" (2026-10-18T08:35:32+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:
  mailsnail:
    image: node:22-alpine
    command:
    - sh
    - -c
    - npx -y supergateway@4 --stdio 'npx -y [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:
      MAIL_PROVIDER: ${MAIL_PROVIDER}
      MAIL_API_BASE_URL: ${MAIL_API_BASE_URL}
      CLICK2MAIL_USERNAME: ${CLICK2MAIL_USERNAME}
      CLICK2MAIL_PASSWORD: ${CLICK2MAIL_PASSWORD}
      LOB_API_KEY: ${LOB_API_KEY}
      MAIL_MCP_ALLOW_LIVE: ${MAIL_MCP_ALLOW_LIVE}
      MAIL_MCP_SPEND_CAP_USD: ${MAIL_MCP_SPEND_CAP_USD}
volumes:
  npm-cache: {}
  uv-cache: {}
    generated from the record, not tested yet
    # Generated by Hub for toolset "my-agent" (2026-10-18T08:35:32+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: mailsnail
  namespace: mcp
  labels: &id001
    app: mailsnail
spec:
  replicas: 1
  selector:
    matchLabels: *id001
  template:
    metadata:
      labels: *id001
    spec:
      containers:
      - name: mailsnail
        image: node:22-alpine
        ports:
        - containerPort: 8000
          name: http
        env:
        - name: MAIL_PROVIDER
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: MAIL_PROVIDER
        - name: MAIL_API_BASE_URL
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: MAIL_API_BASE_URL
        - name: CLICK2MAIL_USERNAME
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: CLICK2MAIL_USERNAME
        - name: CLICK2MAIL_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: CLICK2MAIL_PASSWORD
        - name: LOB_API_KEY
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: LOB_API_KEY
        - name: MAIL_MCP_ALLOW_LIVE
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: MAIL_MCP_ALLOW_LIVE
        - name: MAIL_MCP_SPEND_CAP_USD
          valueFrom:
            secretKeyRef:
              name: mcp-credentials
              key: MAIL_MCP_SPEND_CAP_USD
        command:
        - sh
        - -c
        - npx -y supergateway@4 --stdio 'npx -y [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: mailsnail
  namespace: mcp
spec:
  selector:
    app: mailsnail
  ports:
  - port: 8000
    targetPort: http
    name: http
    generated from the record, not tested yet
    # Generated by Hub for toolset "my-agent" (2026-10-18T08:35:32+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:
  mailsnail:
    enabled: true
    replicas: 1
    port: 8000
    path: /mcp
    container:
      name: mailsnail
      image: node:22-alpine
      ports:
      - containerPort: 8000
        name: http
      env:
      - name: MAIL_PROVIDER
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: MAIL_PROVIDER
      - name: MAIL_API_BASE_URL
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: MAIL_API_BASE_URL
      - name: CLICK2MAIL_USERNAME
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: CLICK2MAIL_USERNAME
      - name: CLICK2MAIL_PASSWORD
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: CLICK2MAIL_PASSWORD
      - name: LOB_API_KEY
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: LOB_API_KEY
      - name: MAIL_MCP_ALLOW_LIVE
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: MAIL_MCP_ALLOW_LIVE
      - name: MAIL_MCP_SPEND_CAP_USD
        valueFrom:
          secretKeyRef:
            name: mcp-credentials
            key: MAIL_MCP_SPEND_CAP_USD
      command:
      - sh
      - -c
      - npx -y supergateway@4 --stdio 'npx -y [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
    deploy to koyeb

    The form opens with CHANGE_ME for each value you supply: MAIL_PROVIDER, MAIL_API_BASE_URL, CLICK2MAIL_USERNAME, CLICK2MAIL_PASSWORD, LOB_API_KEY, MAIL_MCP_ALLOW_LIVE, MAIL_MCP_SPEND_CAP_USD. Fill them in before you deploy.

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

    azure
    deploy to azuretemplate

    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 [email protected]
# env: MAIL_PROVIDER, MAIL_API_BASE_URL, CLICK2MAIL_USERNAME, CLICK2MAIL_PASSWORD, LOB_API_KEY, MAIL_MCP_ALLOW_LIVE, MAIL_MCP_SPEND_CAP_USD
    {
  "mcpServers": {
    "mailsnail": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MAIL_PROVIDER": "${MAIL_PROVIDER}",
        "MAIL_API_BASE_URL": "${MAIL_API_BASE_URL}",
        "CLICK2MAIL_USERNAME": "${CLICK2MAIL_USERNAME}",
        "CLICK2MAIL_PASSWORD": "${CLICK2MAIL_PASSWORD}",
        "LOB_API_KEY": "${LOB_API_KEY}",
        "MAIL_MCP_ALLOW_LIVE": "${MAIL_MCP_ALLOW_LIVE}",
        "MAIL_MCP_SPEND_CAP_USD": "${MAIL_MCP_SPEND_CAP_USD}"
      }
    }
  }
}
    #!/usr/bin/env bash
# Registers every server with Claude Code (run once; `claude mcp list` to check).
set -euo pipefail
set -a; [ -f .env ] && source .env; set +a
claude mcp add mailsnail -e "MAIL_PROVIDER=${MAIL_PROVIDER}" -e "MAIL_API_BASE_URL=${MAIL_API_BASE_URL}" -e "CLICK2MAIL_USERNAME=${CLICK2MAIL_USERNAME}" -e "CLICK2MAIL_PASSWORD=${CLICK2MAIL_PASSWORD}" -e "LOB_API_KEY=${LOB_API_KEY}" -e "MAIL_MCP_ALLOW_LIVE=${MAIL_MCP_ALLOW_LIVE}" -e "MAIL_MCP_SPEND_CAP_USD=${MAIL_MCP_SPEND_CAP_USD}" -- npx -y [email protected]

    {
  "mcpServers": {
    "mailsnail": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MAIL_PROVIDER": "${MAIL_PROVIDER}",
        "MAIL_API_BASE_URL": "${MAIL_API_BASE_URL}",
        "CLICK2MAIL_USERNAME": "${CLICK2MAIL_USERNAME}",
        "CLICK2MAIL_PASSWORD": "${CLICK2MAIL_PASSWORD}",
        "LOB_API_KEY": "${LOB_API_KEY}",
        "MAIL_MCP_ALLOW_LIVE": "${MAIL_MCP_ALLOW_LIVE}",
        "MAIL_MCP_SPEND_CAP_USD": "${MAIL_MCP_SPEND_CAP_USD}"
      }
    }
  }
}
    {
  "servers": {
    "mailsnail": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "MAIL_PROVIDER": "${MAIL_PROVIDER}",
        "MAIL_API_BASE_URL": "${MAIL_API_BASE_URL}",
        "CLICK2MAIL_USERNAME": "${CLICK2MAIL_USERNAME}",
        "CLICK2MAIL_PASSWORD": "${CLICK2MAIL_PASSWORD}",
        "LOB_API_KEY": "${LOB_API_KEY}",
        "MAIL_MCP_ALLOW_LIVE": "${MAIL_MCP_ALLOW_LIVE}",
        "MAIL_MCP_SPEND_CAP_USD": "${MAIL_MCP_SPEND_CAP_USD}"
      }
    }
  }
}
    name: my-agent
target: local
servers:
- hub: io.github.iancollins27/mailsnail
    • not probed yet: tools unpinned, ingest lists them

    tools

    Not probed yetThe tools appear once the hub or its worker has listed this entry. Running it still works: your client lists them on first start.