Parcel MCP Server

An MCP server for Parcel delivery tracking. It covers every field and operation in Parcel's documented external API, provides the daily carrier catalog, and runs through local stdio or a hosted Cloudflare remote connector.

This project is not affiliated with Ivan Pavlov or Parcel.

Coverage

Parcel does not document edit, delete, archive, or forced-refresh endpoints. This server does not claim those capabilities.

Related MCP server: Parcel MCP Server

Tools

• parcel_auth_status reports credential discovery and the write gate without an API call.

• parcel_list_deliveries returns every delivery and event from the active or recent API view.

• parcel_get_delivery selects one exact tracking number from those API views.

• parcel_list_carriers returns the complete carrier code map.

• parcel_find_carriers searches carrier names and codes.

• parcel_add_delivery submits one delivery and supports tracking_number, carrier_code, description, language, send_push_confirmation, postcode, and email.

The add tool is not advertised unless PARCEL_ALLOW_WRITES=1. This prevents an MCP client from invoking a write when the server was intended to be read-only.

Parcel API limits

• Parcel Premium is required.

• Delivery reads return cached data and do not trigger a carrier refresh.

• Reads are limited to 20 requests per hour.

• Adds are limited to 20 requests per day, including failed requests.

• The add endpoint accepts one delivery per request.

• Newly added deliveries can show no data until Parcel's next server update.

Local installation

Generate an API key at Parcel Web Access, then use one of these credential methods:

export PARCEL_API_KEY="your-parcel-api-key"
export PARCEL_ALLOW_WRITES=1
npx -y @oliverames/mcp-server-for-parcel@latest

The server also supports:

• PARCEL_API_KEY_FILE, a small file containing only the key.

• PARCEL_OP_PATH, an op:// reference read through the 1Password CLI.

• Codex ~/.codex/config.toml and Claude ~/.claude/settings.json environment sections.

Credential priority is the process environment, host configuration, key file, then 1Password. The server never sends the key outside https://api.parcel.app and refuses redirects.

Claude Desktop, Claude Code, Codex, Hermes, and Antigravity

The repository includes native manifests for each host. The generic configuration is:

{
  "mcpServers": {
    "parcel-mcp-server": {
      "command": "npx",
      "args": ["-y", "@oliverames/mcp-server-for-parcel@latest"],
      "env": {
        "PARCEL_API_KEY": "${PARCEL_API_KEY}",
        "PARCEL_OP_PATH": "${PARCEL_OP_PATH}",
        "PARCEL_ALLOW_WRITES": "1"
      }
    }
  }
}

Leave PARCEL_ALLOW_WRITES empty for a read-only server.

Hosted Cloudflare connector

The worker/ directory provides an OAuth 2.1 protected Streamable HTTP endpoint at https://parcel.amesvt.com/mcp, plus legacy SSE for older clients. During authorization, the connector asks for a Parcel API key, validates it against Parcel, encrypts it with AES-GCM, and stores it per connection. The key never enters the connector's OAuth token or MCP Durable Object state.

The connector supports PKCE S256, dynamic client registration, optional write access, origin filtering, separate consent-signing and data-encryption keys, encrypted key deletion, and security headers. See the deployment guide.

The production deployment at parcel.amesvt.com is private. Cloudflare stores an allowlist containing only the SHA-256 hash of Oliver Ames' Parcel API key, so authorization attempts using any other Parcel key are rejected.

Development and verification

npm install
npm test
npm run smoke:list-tools
npm run smoke:live-tool
npm run smoke:packed
npm run release:check
npm pack --dry-run

The packed-install test installs the actual tarball and launches both declared bin names through npm's relative symlinks. CI tests Node 18, 20, and 22, audits dependencies, scans secrets, and tests the Worker.

Security and privacy

See SECURITY.md and the hosted connector privacy notice. Do not commit Parcel API keys. If one is exposed, revoke it through Parcel Web Access and generate a replacement.

License

MIT. Copyright 2026 Oliver Ames.