Claimora
Scientific and legal claim graph. Query claims, evidence, contradictions, and innovation flags.
Should I use this
Quality & Safety
A
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~4,503Tokens (tool definitions)
~5.6 KBTypical response size
Significant attention impact (3.52% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"claimora": {
"url": "https://claimora.si/mcp"
}
}
}Remote endpoints
https://claimora.si/mcpstreamable-httpWhat it can do
Tool inventory
Tools (8)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢query_claims(query, domain, filters, limit, offset)
Search claim statements and excerpts, strongest matches first. Use this when you have keywords or a domain and want the strongest matching claims. Returns claim id, status, evidence strength, and a shortened excerpt. Example: query_claims(query="transformer", domain="ai-ml", limit=5). Example: query_claims(query="United States", domain="data-protection", limit=5).
Input Schema
{
"type": "object",
"properties": {
"query": {
"description": "Text matched against the claim statement and its excerpt. Example: transformer.",
"examples": [
"transformer"
],
"title": "Query",
"type": "string"
},
"domain": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Restrict results to one domain. Example: ai-ml.",
"examples": [
"ai-ml"
],
"title": "Domain"
},
"filters": {
"anyOf": [
{
"$ref": "#/$defs/ClaimFilters"
},
{
"type": "null"
}
],
"default": null,
"description": "Optional status, minimum evidence strength, and assertion type. Example: {\"status\": \"consensus\", \"min_strength\": 0.6}.",
"examples": [
{
"min_strength": 0.6,
"status": "consensus"
}
]
},
"limit": {
"default": 20,
"description": "Page size. Example: 5.",
"examples": [
5
],
"maximum": 50,
"minimum": 1,
"title": "Limit",
"type": "integer"
},
"offset": {
"default": 0,
"description": "Number of hits to skip. Example: 0.",
"examples": [
0
],
"minimum": 0,
"title": "Offset",
"type": "integer"
}
},
"required": [
"query"
],
"$defs": {
"AssertionType": {
"enum": [
"asserted",
"hedged",
"conditional"
],
"title": "AssertionType",
"type": "string"
},
"ClaimFilters": {
"description": "Optional status, strength, and assertion type for a claim search.",
"properties": {
"status": {
"anyOf": [
{
"$ref": "#/$defs/ClaimStatus"
},
{
"type": "null"
}
],
"default": null,
"description": "Keep one status: consensus, contested, or outdated. Example: consensus.",
"examples": [
"consensus"
]
},
"min_strength": {
"anyOf": [
{
"maximum": 1,
"minimum": 0,
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"description": "Drop claims below this evidence strength, from 0 to 1. Example: 0.6.",
"examples": [
0.6
],
"title": "Min Strength"
},
"assertion_type": {
"anyOf": [
{
"$ref": "#/$defs/AssertionType"
},
{
"type": "null"
}
],
"default": null,
"description": "Keep one assertion type: asserted, hedged, or conditional. Example: asserted.",
"examples": [
"asserted"
]
}
},
"title": "ClaimFilters",
"type": "object"
},
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
}
},
"title": "query_claimsArguments"
}Output Schema
{
"type": "object",
"properties": {
"claims": {
"items": {
"$ref": "#/$defs/ClaimHit"
},
"title": "Claims",
"type": "array"
},
"page": {
"$ref": "#/$defs/Page"
}
},
"required": [
"claims",
"page"
],
"$defs": {
"AssertionType": {
"enum": [
"asserted",
"hedged",
"conditional"
],
"title": "AssertionType",
"type": "string"
},
"ClaimHit": {
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"statement": {
"title": "Statement",
"type": "string"
},
"domain": {
"title": "Domain",
"type": "string"
},
"status": {
"$ref": "#/$defs/ClaimStatus"
},
"evidence_strength": {
"title": "Evidence Strength",
"type": "number"
},
"assertion_type": {
"$ref": "#/$defs/AssertionType"
},
"excerpt": {
"title": "Excerpt",
"type": "string"
}
},
"required": [
"id",
"statement",
"domain",
"status",
"evidence_strength",
"assertion_type",
"excerpt"
],
"title": "ClaimHit",
"type": "object"
},
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
},
"Page": {
"properties": {
"limit": {
"title": "Limit",
"type": "integer"
},
"offset": {
"title": "Offset",
"type": "integer"
},
"returned": {
"title": "Returned",
"type": "integer"
},
"total": {
"title": "Total",
"type": "integer"
}
},
"required": [
"limit",
"offset",
"returned",
"total"
],
"title": "Page",
"type": "object"
}
},
"title": "QueryClaimsResult"
}🟢get_evidence(claim_id, full_text)
Provenance for one claim. Excerpts are short unless full_text is true. Use this after a search when you have a claim id and need the papers behind it. Example: get_evidence(claim_id="claim-attention"). Example: get_evidence(claim_id="claim-attention", full_text=true).
Input Schema
{
"type": "object",
"properties": {
"claim_id": {
"description": "Claim id returned by a search tool. Example: claim-attention.",
"examples": [
"claim-attention"
],
"title": "Claim Id",
"type": "string"
},
"full_text": {
"default": false,
"description": "Return stored excerpts without shortening. Example: false.",
"examples": [
false
],
"title": "Full Text",
"type": "boolean"
}
},
"required": [
"claim_id"
],
"title": "get_evidenceArguments"
}Output Schema
{
"type": "object",
"properties": {
"found": {
"title": "Found",
"type": "boolean"
},
"id": {
"title": "Id",
"type": "string"
},
"statement": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Statement"
},
"domain": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Domain"
},
"status": {
"anyOf": [
{
"$ref": "#/$defs/ClaimStatus"
},
{
"type": "null"
}
],
"default": null
},
"evidence_strength": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"title": "Evidence Strength"
},
"assertion_type": {
"anyOf": [
{
"$ref": "#/$defs/AssertionType"
},
{
"type": "null"
}
],
"default": null
},
"last_updated": {
"anyOf": [
{
"format": "date-time",
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Last Updated"
},
"provenance": {
"items": {
"$ref": "#/$defs/Provenance"
},
"title": "Provenance",
"type": "array"
},
"contradiction_ids": {
"items": {
"type": "string"
},
"title": "Contradiction Ids",
"type": "array"
}
},
"required": [
"found",
"id"
],
"$defs": {
"AssertionType": {
"enum": [
"asserted",
"hedged",
"conditional"
],
"title": "AssertionType",
"type": "string"
},
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
},
"Provenance": {
"properties": {
"doi": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Doi"
},
"paper_id": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Paper Id"
},
"excerpt": {
"title": "Excerpt",
"type": "string"
},
"page": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Page"
},
"section": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Section"
}
},
"required": [
"excerpt"
],
"title": "Provenance",
"type": "object"
}
},
"title": "EvidenceResult"
}🟢get_contradictions(claim_id)
List claims stored as contradicting one claim. Returns each opposing claim id, status, evidence strength, and opposition strength. Example: get_contradictions(claim_id="<id from query_claims>").
Input Schema
{
"type": "object",
"properties": {
"claim_id": {
"description": "Claim id to inspect.",
"title": "Claim Id",
"type": "string"
}
},
"required": [
"claim_id"
],
"title": "get_contradictionsArguments"
}Output Schema
{
"type": "object",
"properties": {
"claim_id": {
"title": "Claim Id",
"type": "string"
},
"found": {
"title": "Found",
"type": "boolean"
},
"contradictions": {
"items": {
"$ref": "#/$defs/ContradictionHit"
},
"title": "Contradictions",
"type": "array"
}
},
"required": [
"claim_id",
"found",
"contradictions"
],
"$defs": {
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
},
"ContradictionHit": {
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"statement": {
"title": "Statement",
"type": "string"
},
"domain": {
"title": "Domain",
"type": "string"
},
"status": {
"$ref": "#/$defs/ClaimStatus"
},
"evidence_strength": {
"title": "Evidence Strength",
"type": "number"
},
"opposition_strength": {
"title": "Opposition Strength",
"type": "number"
}
},
"required": [
"id",
"statement",
"domain",
"status",
"evidence_strength",
"opposition_strength"
],
"title": "ContradictionHit",
"type": "object"
}
},
"title": "ContradictionsResult"
}🟢get_updates(since, domain, limit, offset)
List claims whose last_updated is at or after a timestamp. Use this to read claims that changed after a time you already checked. Returns claim id, status, evidence strength, and a shortened excerpt. Example: get_updates(since="2026-01-01T00:00:00Z", domain="ai-ml", limit=20). Example: get_updates(since="2026-10-01T00:00:00Z", domain="consciousness", offset=20).
Input Schema
{
"type": "object",
"properties": {
"since": {
"description": "ISO-8601 timestamp. Claims updated at or after this time. Example: 2026-01-01T00:00:00Z.",
"examples": [
"2026-01-01T00:00:00Z"
],
"format": "date-time",
"title": "Since",
"type": "string"
},
"domain": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Restrict results to one domain. Example: ai-ml.",
"examples": [
"ai-ml"
],
"title": "Domain"
},
"limit": {
"default": 20,
"description": "Page size. Example: 20.",
"examples": [
20
],
"maximum": 50,
"minimum": 1,
"title": "Limit",
"type": "integer"
},
"offset": {
"default": 0,
"description": "Number of hits to skip. Example: 0.",
"examples": [
0
],
"minimum": 0,
"title": "Offset",
"type": "integer"
}
},
"required": [
"since"
],
"title": "get_updatesArguments"
}Output Schema
{
"type": "object",
"properties": {
"since": {
"format": "date-time",
"title": "Since",
"type": "string"
},
"claims": {
"items": {
"$ref": "#/$defs/ClaimHit"
},
"title": "Claims",
"type": "array"
},
"page": {
"$ref": "#/$defs/Page"
}
},
"required": [
"since",
"claims",
"page"
],
"$defs": {
"AssertionType": {
"enum": [
"asserted",
"hedged",
"conditional"
],
"title": "AssertionType",
"type": "string"
},
"ClaimHit": {
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"statement": {
"title": "Statement",
"type": "string"
},
"domain": {
"title": "Domain",
"type": "string"
},
"status": {
"$ref": "#/$defs/ClaimStatus"
},
"evidence_strength": {
"title": "Evidence Strength",
"type": "number"
},
"assertion_type": {
"$ref": "#/$defs/AssertionType"
},
"excerpt": {
"title": "Excerpt",
"type": "string"
}
},
"required": [
"id",
"statement",
"domain",
"status",
"evidence_strength",
"assertion_type",
"excerpt"
],
"title": "ClaimHit",
"type": "object"
},
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
},
"Page": {
"properties": {
"limit": {
"title": "Limit",
"type": "integer"
},
"offset": {
"title": "Offset",
"type": "integer"
},
"returned": {
"title": "Returned",
"type": "integer"
},
"total": {
"title": "Total",
"type": "integer"
}
},
"required": [
"limit",
"offset",
"returned",
"total"
],
"title": "Page",
"type": "object"
}
},
"title": "UpdatesResult"
}🟢get_innovation_flags(domain, min_strength, limit, offset)
List innovation flags, strongest first. Use this when you want links between claims rather than the claims themselves. Returns flag id, domain, summary, strength, and the claim ids on each path. Example: get_innovation_flags(domain="ai-ml", min_strength=0.5, limit=10). Example: get_innovation_flags(domain="quantum", min_strength=0.8, limit=5).
Input Schema
{
"type": "object",
"properties": {
"domain": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Restrict flags to one domain. Example: ai-ml.",
"examples": [
"ai-ml"
],
"title": "Domain"
},
"min_strength": {
"anyOf": [
{
"maximum": 1,
"minimum": 0,
"type": "number"
},
{
"type": "null"
}
],
"default": null,
"description": "Drop flags below this strength, from 0 to 1. Example: 0.5.",
"examples": [
0.5
],
"title": "Min Strength"
},
"limit": {
"default": 20,
"description": "Page size. Example: 10.",
"examples": [
10
],
"maximum": 50,
"minimum": 1,
"title": "Limit",
"type": "integer"
},
"offset": {
"default": 0,
"description": "Number of hits to skip. Example: 0.",
"examples": [
0
],
"minimum": 0,
"title": "Offset",
"type": "integer"
}
},
"title": "get_innovation_flagsArguments"
}Output Schema
{
"type": "object",
"properties": {
"flags": {
"items": {
"$ref": "#/$defs/FlagHit"
},
"title": "Flags",
"type": "array"
},
"page": {
"$ref": "#/$defs/Page"
}
},
"required": [
"flags",
"page"
],
"$defs": {
"FlagHit": {
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"domain": {
"title": "Domain",
"type": "string"
},
"summary": {
"title": "Summary",
"type": "string"
},
"strength": {
"title": "Strength",
"type": "number"
},
"claim_path": {
"items": {
"type": "string"
},
"title": "Claim Path",
"type": "array"
},
"created_at": {
"format": "date-time",
"title": "Created At",
"type": "string"
}
},
"required": [
"id",
"domain",
"summary",
"strength",
"claim_path",
"created_at"
],
"title": "FlagHit",
"type": "object"
},
"Page": {
"properties": {
"limit": {
"title": "Limit",
"type": "integer"
},
"offset": {
"title": "Offset",
"type": "integer"
},
"returned": {
"title": "Returned",
"type": "integer"
},
"total": {
"title": "Total",
"type": "integer"
}
},
"required": [
"limit",
"offset",
"returned",
"total"
],
"title": "Page",
"type": "object"
}
},
"title": "FlagsResult"
}🟢search_smart(natural_language, domain, limit, offset)
Find claims from a natural-language question. This build matches text only. Use this when the input is a question instead of keywords. Example: search_smart(natural_language="How do transformers handle long context?", domain="ai-ml", limit=5). Example: search_smart(natural_language="What limits healthspan?", domain="longevity", limit=5).
Input Schema
{
"type": "object",
"properties": {
"natural_language": {
"description": "A question or description of the claims you want. Example: How do transformers handle long context?",
"examples": [
"How do transformers handle long context?"
],
"title": "Natural Language",
"type": "string"
},
"domain": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Restrict results to one domain. Example: ai-ml.",
"examples": [
"ai-ml"
],
"title": "Domain"
},
"limit": {
"default": 10,
"description": "Page size. Example: 5.",
"examples": [
5
],
"maximum": 50,
"minimum": 1,
"title": "Limit",
"type": "integer"
},
"offset": {
"default": 0,
"description": "Number of hits to skip. Example: 0.",
"examples": [
0
],
"minimum": 0,
"title": "Offset",
"type": "integer"
}
},
"required": [
"natural_language"
],
"title": "search_smartArguments"
}Output Schema
{
"type": "object",
"properties": {
"strategy": {
"const": "lexical",
"default": "lexical",
"title": "Strategy",
"type": "string"
},
"claims": {
"items": {
"$ref": "#/$defs/ClaimHit"
},
"title": "Claims",
"type": "array"
},
"page": {
"$ref": "#/$defs/Page"
}
},
"required": [
"claims",
"page"
],
"$defs": {
"AssertionType": {
"enum": [
"asserted",
"hedged",
"conditional"
],
"title": "AssertionType",
"type": "string"
},
"ClaimHit": {
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"statement": {
"title": "Statement",
"type": "string"
},
"domain": {
"title": "Domain",
"type": "string"
},
"status": {
"$ref": "#/$defs/ClaimStatus"
},
"evidence_strength": {
"title": "Evidence Strength",
"type": "number"
},
"assertion_type": {
"$ref": "#/$defs/AssertionType"
},
"excerpt": {
"title": "Excerpt",
"type": "string"
}
},
"required": [
"id",
"statement",
"domain",
"status",
"evidence_strength",
"assertion_type",
"excerpt"
],
"title": "ClaimHit",
"type": "object"
},
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
},
"Page": {
"properties": {
"limit": {
"title": "Limit",
"type": "integer"
},
"offset": {
"title": "Offset",
"type": "integer"
},
"returned": {
"title": "Returned",
"type": "integer"
},
"total": {
"title": "Total",
"type": "integer"
}
},
"required": [
"limit",
"offset",
"returned",
"total"
],
"title": "Page",
"type": "object"
}
},
"description": "strategy stays 'lexical' until multi-hop traversal is implemented.",
"title": "SmartSearchResult"
}🟢get_authors(claim_id)
List authors linked to one claim. Use this when you have a claim id and need the people linked to it. Returns author id, name, and orcid. The list is empty when none are linked. Example: get_authors(claim_id="claim-attention"). Example: get_authors(claim_id="<id from query_claims>").
Input Schema
{
"type": "object",
"properties": {
"claim_id": {
"description": "Claim id returned by a search tool. Example: claim-attention.",
"examples": [
"claim-attention"
],
"title": "Claim Id",
"type": "string"
}
},
"required": [
"claim_id"
],
"title": "get_authorsArguments"
}Output Schema
{
"type": "object",
"properties": {
"claim_id": {
"title": "Claim Id",
"type": "string"
},
"authors": {
"items": {
"$ref": "#/$defs/AuthorNode"
},
"title": "Authors",
"type": "array"
}
},
"required": [
"claim_id"
],
"$defs": {
"AuthorNode": {
"description": "One author. No profile fields beyond id, display name, and ORCID.",
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"name": {
"title": "Name",
"type": "string"
},
"orcid": {
"default": "",
"title": "Orcid",
"type": "string"
}
},
"required": [
"id",
"name"
],
"title": "AuthorNode",
"type": "object"
}
},
"description": "Authors linked to one claim. The list is empty when none are stored.",
"title": "AuthorsResult"
}🟢query_law(jurisdiction, area_of_law, query, limit)
List law records for one jurisdiction and area of law. Use this when you want jurisdiction-scoped records. Omitting jurisdiction returns science claims. Returns record id, status, evidence strength, a shortened excerpt, jurisdiction, and area of law. Example: query_law(jurisdiction="DE", area_of_law="data-protection", query="consent", limit=5). Example: query_law(query="transformer", limit=5).
Input Schema
{
"type": "object",
"properties": {
"jurisdiction": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Jurisdiction code. Example: DE. Omit it to search science.",
"examples": [
"DE"
],
"title": "Jurisdiction"
},
"area_of_law": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Area of law slug. Example: data-protection.",
"examples": [
"data-protection"
],
"title": "Area Of Law"
},
"query": {
"default": "",
"description": "Text matched against the statement and its excerpt. Example: consent.",
"examples": [
"consent"
],
"title": "Query",
"type": "string"
},
"limit": {
"default": 20,
"description": "Page size. Example: 5.",
"examples": [
5
],
"maximum": 50,
"minimum": 1,
"title": "Limit",
"type": "integer"
}
},
"title": "query_lawArguments"
}Output Schema
{
"type": "object",
"properties": {
"section": {
"enum": [
"science",
"law"
],
"title": "Section",
"type": "string"
},
"records": {
"items": {
"$ref": "#/$defs/LawRecordHit"
},
"title": "Records",
"type": "array"
},
"page": {
"$ref": "#/$defs/Page"
}
},
"required": [
"section",
"records",
"page"
],
"$defs": {
"AssertionType": {
"enum": [
"asserted",
"hedged",
"conditional"
],
"title": "AssertionType",
"type": "string"
},
"ClaimStatus": {
"enum": [
"consensus",
"contested",
"outdated"
],
"title": "ClaimStatus",
"type": "string"
},
"LawRecordHit": {
"description": "One science or law record. List fields stay short, plus the law keys.",
"properties": {
"id": {
"title": "Id",
"type": "string"
},
"statement": {
"title": "Statement",
"type": "string"
},
"domain": {
"title": "Domain",
"type": "string"
},
"status": {
"$ref": "#/$defs/ClaimStatus"
},
"evidence_strength": {
"title": "Evidence Strength",
"type": "number"
},
"assertion_type": {
"$ref": "#/$defs/AssertionType"
},
"excerpt": {
"title": "Excerpt",
"type": "string"
},
"section": {
"enum": [
"science",
"law"
],
"title": "Section",
"type": "string"
},
"jurisdiction": {
"default": "",
"title": "Jurisdiction",
"type": "string"
},
"area_of_law": {
"default": "",
"title": "Area Of Law",
"type": "string"
}
},
"required": [
"id",
"statement",
"domain",
"status",
"evidence_strength",
"assertion_type",
"excerpt",
"section"
],
"title": "LawRecordHit",
"type": "object"
},
"Page": {
"properties": {
"limit": {
"title": "Limit",
"type": "integer"
},
"offset": {
"title": "Offset",
"type": "integer"
},
"returned": {
"title": "Returned",
"type": "integer"
},
"total": {
"title": "Total",
"type": "integer"
}
},
"required": [
"limit",
"offset",
"returned",
"total"
],
"title": "Page",
"type": "object"
}
},
"description": "Law records for a jurisdiction, or science claims when jurisdiction is omitted.",
"title": "LawRecordsResult"
}Community
Evidence
Recent observations
verifiedversion not recorded8 tools