Library Of Congress
Server Details
Library of Congress (loc.gov) MCP — the world's largest library.
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- Status
- Unhealthy
- Last Tested
- Transport
- Streamable HTTP
- URL
- Repository
- pipeworx-io/mcp-library-of-congress
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- 0
- Server Listing
- Library of Congress MCP Server
TDQS
Scored across 31 tools
Multiple tools have heavily overlapping purposes: ask_pipeworx and ask_pipeworx_beta are explicitly behaviorally identical right now, ask_pipeworx_grounded, deep_research, and validate_claim all answer factual questions with grounded evidence, and the five polymarket_* tools plus bet_research all target edge/arbitrage discovery. The verbose descriptions help, but the boundaries between research, validation, and prediction-market analysis are genuinely hard to navigate reliably.
Tool names follow a mostly consistent snake_case pattern with descriptive verbs (ask_, compare_, discover_, generate_, resolve_, validate_) and domain prefixes (polymarket_, pipeworx_). Minor deviations exist—bare verbs like forget, remember, and recall, plus noun-phrase names like entity_profile and recent_changes—but the overall convention is predictable and readable.
31 tools is too many for a coherent, focused server, and the scope is a grab-bag spanning data research, prediction-market analysis, AI visibility audits, memory storage, subscriptions, npm dependency checks, and llms.txt generation. Specialized clusters could each justify their own server, so the count feels bloated rather than purpose-built.
Within the broad aggregator domain, the surface is fairly rich: question answering, grounded verification, multi-source research, entity resolution, comparisons, subscriptions, alerts, and memory are all covered. However, notable gaps exist—there is no direct tool to fetch a cited pipeworx:// record, no account-management path despite deep_research requiring one, and the server's stated identity as 'Library Of Congress' is entirely unaddressed.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
1 tool update
- Changed
deep_research1 field changed- changed
Input schema / properties / depth / descriptionPrevious value: -"How many facets to research in parallel: quick=3 (single hop), standard=5 (default; adds a gap-recovery hop that re-angles unanswered facets + a contradictions[] scan across findings), thorough=8 (paid; adds a full iterative hop that chases leads + recovers gaps, plus the contradictions[] scan)."New value: +"How many facets to research in parallel: quick=3 (single hop), standard=3 (default; adds a gap-recovery hop that re-angles unanswered facets + a contradictions[] scan across findings), thorough=6 (paid; adds a full iterative hop that chases leads + recovers gaps, plus the contradictions[] scan)."
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