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PaperAgent — Send Physical Mail

dev.paperagent/letters

by dev.paperagent· v0.1.0Source: Official MCP Registry
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Protocol and transport

Negotiated protocol versionSource: Squatch observed
2025-11-25
Declared protocol versionsSource: Official MCP Registry
Not declared
Transports
streamable-http

serverInfo

Source: Squatch observed
{
  "name": "paperagent",
  "title": "PaperAgent — Send Physical Mail",
  "version": "0.1.0"
}

Extensions

  • io.modelcontextprotocol/ui

    First seen · last seen 

    {
  "mimeTypes": [
    "text/html;profile=mcp-app"
  ]
}

Authentication

Source: Squatch observed
Summary
{
  "type": "none",
  "challengeStatus": null,
  "scopesSupported": [],
  "resourceMetadataUrl": null,
  "authorizationServers": []
}

Conformance

Source: Squatch observed
Checks
{
  "checks": [
    {
      "check": "tools_list_deterministic",
      "passed": true
    },
    {
      "check": "list_methods_succeed",
      "passed": true
    },
    {
      "check": "list_results_schema_valid",
      "passed": true
    },
    {
      "check": "pagination_terminates",
      "passed": true
    },
    {
      "check": "tool_names_valid",
      "passed": true
    },
    {
      "check": "tool_names_unique",
      "passed": true
    },
    {
      "check": "no_network_schema_refs",
      "passed": true
    },
    {
      "check": "x_mcp_header_valid",
      "passed": true
    },
    {
      "check": "icon_urls_https_or_data",
      "passed": true
    },
    {
      "check": "initialize_version_echo",
      "detail": "requested 2025-11-25, received \"2025-11-25\"",
      "passed": true
    },
    {
      "check": "notification_202",
      "passed": true
    },
    {
      "check": "get_stream_or_405",
      "passed": true
    }
  ],
  "toolsListNondeterministic": false
}

Protocol

Source: Squatch observed
Summary
{
  "era": "legacy",
  "extensions": [
    "io.modelcontextprotocol/ui"
  ],
  "serverInfo": {
    "name": "paperagent",
    "title": "PaperAgent — Send Physical Mail",
    "version": "0.1.0"
  },
  "transportType": "streamable-http",
  "negotiatedVersion": "2025-11-25",
  "supportedVersions": [],
  "instructionsPresent": true,
  "declaredTransportMismatch": false
}

TLS

Source: Squatch observed
Summary
{
  "ok": true,
  "issuer": "CN=WE1, O=Google Trust Services, C=US",
  "validTo": "2027-01-06T03:22:38.000Z",
  "protocol": "TLSv1.3"
}

No redirects were recorded in the latest scan.

Scan metadata

Scan id
cd9ba17e-df72-49ea-b814-dd74e9490d06
Status
completed
Trigger
scheduled
Started
Completed
Scanner version
1.0.0
Snapshot fingerprint
e1d1ca5f732eedd3a231d1733970c94d61234e08f614016a9a77985c85b47f2d