Serveur MCP

Web Evidence

io.github.impanyu/web-evidence
Recherche et exploration Public et accessible MCP 2025-11-25

Ce que fait ce MCP

Verifies claims using cited web sources, provenance records, snapshots, and hashes at multiple research depths.

list_verification_tiers
List Web Evidence verification tools, prices, and research limits. This tool is free.
Schéma d’entrée
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
verify_claim
Standard verification with balanced evidence coverage. Costs $0.05 USDC on Base per call.
Schéma d’entrée
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['claim'], 'properties': {'asOf': {'type': 'string', 'description': 'Optional YYYY-MM-DD date at which the claim should be evaluated.'}, 'claim': {'type': 'string', 'maxLength': 4000, 'minLength': 3, 'description': 'The factual claim to verify.'}, 'language': {'type': 'string', 'maxLength': 35, 'minLength': 2}, 'maxSources': {'type': 'integer', 'maximum': 20, 'minimum': 1}, 'jurisdiction': {'type': 'string', 'maxLength': 100}, 'sourcePolicy': {'enum': ['official_only', 'authoritative', 'open_web'], 'type': 'string'}, 'allowedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'blockedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'freshnessHours': {'type': 'integer', 'maximum': 8760, 'minimum': 1}, 'minimumSources': {'type': 'integer', 'maximum': 10, 'minimum': 1}, 'includeConflicts': {'type': 'boolean'}}, 'additionalProperties': False}
verify_claim_deep
Deep verification for compound or contested claims using up to 15 cited sources. Costs $0.12 USDC on Base per call.
Schéma d’entrée
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['claim'], 'properties': {'asOf': {'type': 'string', 'description': 'Optional YYYY-MM-DD date at which the claim should be evaluated.'}, 'claim': {'type': 'string', 'maxLength': 4000, 'minLength': 3, 'description': 'The factual claim to verify.'}, 'language': {'type': 'string', 'maxLength': 35, 'minLength': 2}, 'maxSources': {'type': 'integer', 'maximum': 20, 'minimum': 1}, 'jurisdiction': {'type': 'string', 'maxLength': 100}, 'sourcePolicy': {'enum': ['official_only', 'authoritative', 'open_web'], 'type': 'string'}, 'allowedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'blockedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'freshnessHours': {'type': 'integer', 'maximum': 8760, 'minimum': 1}, 'minimumSources': {'type': 'integer', 'maximum': 10, 'minimum': 1}, 'includeConflicts': {'type': 'boolean'}}, 'additionalProperties': False}
verify_claim_quick
Quick verification for a narrow claim using up to 3 cited sources. Costs $0.02 USDC on Base per call.
Schéma d’entrée
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['claim'], 'properties': {'asOf': {'type': 'string', 'description': 'Optional YYYY-MM-DD date at which the claim should be evaluated.'}, 'claim': {'type': 'string', 'maxLength': 4000, 'minLength': 3, 'description': 'The factual claim to verify.'}, 'language': {'type': 'string', 'maxLength': 35, 'minLength': 2}, 'maxSources': {'type': 'integer', 'maximum': 20, 'minimum': 1}, 'jurisdiction': {'type': 'string', 'maxLength': 100}, 'sourcePolicy': {'enum': ['official_only', 'authoritative', 'open_web'], 'type': 'string'}, 'allowedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'blockedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'freshnessHours': {'type': 'integer', 'maximum': 8760, 'minimum': 1}, 'minimumSources': {'type': 'integer', 'maximum': 10, 'minimum': 1}, 'includeConflicts': {'type': 'boolean'}}, 'additionalProperties': False}
verify_claim_research
Research-grade verification with the largest search and evidence budget. Costs $0.25 USDC on Base per call.
Schéma d’entrée
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['claim'], 'properties': {'asOf': {'type': 'string', 'description': 'Optional YYYY-MM-DD date at which the claim should be evaluated.'}, 'claim': {'type': 'string', 'maxLength': 4000, 'minLength': 3, 'description': 'The factual claim to verify.'}, 'language': {'type': 'string', 'maxLength': 35, 'minLength': 2}, 'maxSources': {'type': 'integer', 'maximum': 20, 'minimum': 1}, 'jurisdiction': {'type': 'string', 'maxLength': 100}, 'sourcePolicy': {'enum': ['official_only', 'authoritative', 'open_web'], 'type': 'string'}, 'allowedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'blockedDomains': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 100}, 'freshnessHours': {'type': 'integer', 'maximum': 8760, 'minimum': 1}, 'minimumSources': {'type': 'integer', 'maximum': 10, 'minimum': 1}, 'includeConflicts': {'type': 'boolean'}}, 'additionalProperties': False}
Ajouté
verify_claim_research
2 October 2026 02:40
Ajouté
verify_claim_deep
2 October 2026 02:40
Ajouté
verify_claim
2 October 2026 02:40
Ajouté
verify_claim_quick
2 October 2026 02:40
Ajouté
list_verification_tiers
2 October 2026 02:40