A side-by-side look at the Chatpack MCP and Ziptax Sales Tax API MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Chatpack MCP for developer tools work as a local process; choose Ziptax Sales Tax API for developer tools. You can also run both side by side in one mcpServers block.
search_docs, get_document, get_integration_guide.ZIPTAX_API_KEY.get_account_metrics, lookup_tax_rate.Rows where the two servers differ are marked.
| Spec | C Chatpack MCP | Z Ziptax Sales Tax API |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 86/100 · Excellent | 51/100 · Good |
| Install command | Confirmed | Not confirmed yet |
| Transport | Local subprocess (stdio) | — |
| Auth | No auth required | API key required |
| Pricing | Free | BYOK (pay the provider) |
| Required env vars | None listed | ZIPTAX_API_KEY |
| Verified owner | Verified | Community listing |
| GitHub stars | 224 | 0 |
| Directory activity | 2 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 5 | 2 |
| Full listing | View Chatpack MCP | View Ziptax Sales Tax API |
search_docsSearch bundled Chatpack documentation and the authoritative llms reference. Returns document ids, links and matching excerpts with package versions.get_documentRead a complete bundled Chatpack document by id. Use llms for the authoritative integration contract or concepts/errors for troubleshooting.get_integration_guideRetrieve the repository's framework setup guide with authentication guidance and the authoritative llms reference. Examples match the bundled package versions.list_ui_blocksList public runtime exports of @chatpack/ui, including components, providers and utilities. Returns names accepted by get_ui_block.get_ui_blockRetrieve a public @chatpack/ui export's source module and usage guide. Optionally include supporting UI modules and stylesheet. Files are reference source, not a standalone copy-and-paste component.get_account_metricsGet account usage metrics and quota information for the authenticated ZipTax account. Returns current request counts, limits, and entitlements. Requires a valid ZipTax API key sent in the X-API-KEY header or Authorization header. Get a key at https://platform.zip.taxlookup_tax_rateLook up sales and use tax rates for a US or Canadian location. Provide a full street address for door-level accuracy, or a lat/lng pair for a geographic point lookup. Returns tax rates broken down by jurisdiction (state, county, city, district). Requires a valid ZipTax API key sent in the X-API-KEY header or Authorization header. Get a key at https://platform.zip.taxPaste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
{
"mcpServers": {
"chatpack-mcp": {
"command": "npx",
"args": [
"-y",
"@chatpack/mcp"
]
}
}
}
No confirmed install command for Ziptax Sales Tax API yet — follow the setup steps linked from its listing page rather than a guessed package name.