Chatpack MCP vs SpanHound
A side-by-side look at the Chatpack MCP and SpanHound MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
C
Chatpack MCPDeveloper Tools · Local subprocess (stdio)Read-only MCP server for Chatpack documentation, framework setup guides, and React UI block source. Runs locally over stdio with npx -y @chatpack/mcp. Node.js 20 or later; MIT license; no account or API key required.86ExcellentAuth: no auth requiredS
SpanHoundDeveloper ToolsCapture local agent traces and inspect failures, approvals, and run comparisons.47FairAuth: no auth requiredVerdict: choose Chatpack MCP for developer tools work as a local process; choose SpanHound for developer tools. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
CChoose Chatpack MCP when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
search_docs, get_document, get_integration_guide.
SChoose SpanHound when
- You need dedicated capabilities in the Developer Tools domain.
- Its auth model fits you: No auth required.
- You want tools like
list_runs, run_summary, span_tree.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | C Chatpack MCP | S SpanHound |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 86/100 · Excellent | 47/100 · Fair |
| Install command | Confirmed | Not confirmed yet |
| Transport | Local subprocess (stdio) | — |
| Auth | No auth required | No auth required |
| Pricing | Free | Free |
| Required env vars | None listed | None listed |
| Verified owner | Verified |
Tools & capabilities
Chatpack MCP tools 5
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.
SpanHound tools 12
list_runsStarting out — recent runs with task, model, duration, cost, decision countsrun_summaryOne run at a glance (accepts trace-id prefix)span_tree"What did the agent actually do?" — nested shape of the runslowest_spans"Why was it slow?" — top-k spans by durationapproval_logHITL audit — every approve/deny/**edit**, who decided, and *the rationale*token_usageCost questions — aggregated across runs or per-runsearch_spansFind spans by tool name, file path, "denied", …failure_report
Ready-to-paste client configs
Paste 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.
Chatpack MCP
{
"mcpServers": {
"chatpack-mcp": {
"command": "npx",
"args": [
"-y",
"@chatpack/mcp"
]
}
}
}
SpanHound
No confirmed install command for SpanHound yet — follow the setup steps linked from its listing page rather than a guessed package name.
Frequently asked questions
Chatpack MCP is categorized under Developer Tools and uses a local stdio subprocess. SpanHound belongs to Developer Tools and uses an install path we have not confirmed yet. Pick Chatpack MCP for developer tools work and SpanHound for developer tools.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client. SpanHound has no confirmed install command yet — follow its own setup instructions.
Chatpack MCP is listed as free. Auth: no auth required. SpanHound is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add chatpack-mcp and spanhound as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Chatpack MCP has a quality signal of 86/100 (Excellent) with 2 views, 0 installs and 224 GitHub stars. SpanHound has 47/100 (Fair) with 0 views, 0 installs and 0 GitHub stars.