A
licenseA
qualityB
maintenanceVerifies factual claims against live sources and returns a verdict, confidence score, and citations for any agent to use before stating uncertain facts.
2
6
1
MIT
Spectral — verified-knowledge oracle
Server Details
Cross-check a factual claim against a verified knowledge graph before you assert it. Never guesses.
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- Status
- Unhealthy
- Uptime
- 6.6% over 62 days
- Last Tested
- Transport
- Streamable HTTP
- URL
TDQS
A4.2/5.0
Scored across 3 tools
Disambiguation5/5
Each tool has a distinct purpose: cross_check verifies a single claim, verify_claims batches multiple, and lookup_facts retrieves all facts about an entity. Despite cross_check's verbose description, the boundaries are clear.
Naming Consistency5/5
All tools follow a consistent verb_noun pattern using underscores: cross_check, lookup_facts, verify_claims. No mixing of conventions.
Tool Count4/5
With 3 tools, the server is on the minimal side but still covers the essential operations for a knowledge oracle: single claim check, batch check, and entity fact retrieval. Slightly more tools could expand functionality, but current count is reasonable.
Completeness3/5
The toolset covers core verification tasks but lacks entity search or discovery capabilities. Users cannot find entities by name or explore available relations, which limits completeness for a 'knowledge oracle'.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
3 tool updates
- First observed
cross_check - First observed
lookup_facts - First observed
verify_claims
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Related MCP Servers
- AlicenseNot gradedqualityDmaintenanceEnables verification of simple factual claims (e.g., capital cities) by checking against Wikidata, returning accuracy and confidence scores.5MIT
- AlicenseNot gradedqualityFmaintenanceVerifies claims with verdicts (supported/disputed/unverifiable), confidence scores, and cited sources by cross-referencing FoundryNet Data Network and web search.MIT
- FlicenseNot gradedqualityBmaintenanceEnables autonomous agents and MCP clients to decompose text into atomic claims and verify them against reference knowledge, detecting ungrounded claims, numerical contradictions, and hallucinated entities.7-
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