Citation Checker
What this MCP does
Checks bibliographic references and DOIs against scholarly metadata sources and identifies matching, mismatched, missing, or retracted records.
Tools
Input schema
{'type': 'object', 'required': ['references'], 'properties': {'references': {'type': 'array', 'items': {'type': 'string', 'maxLength': 600, 'minLength': 1}, 'maxItems': 10, 'minItems': 1, 'description': 'One string per reference, as written in the bibliography or as the user gave it: authors, year, title, journal, DOI. A bare DOI or a bare title also works. At most 10.'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'required': ['summary', 'references'], 'properties': {'summary': {'type': 'object', 'required': ['found', 'mismatch', 'not_found', 'unavailable', 'retracted'], 'properties': {'found': {'type': 'integer'}, 'mismatch': {'type': 'integer'}, 'not_found': {'type': 'integer'}, 'retracted': {'type': 'integer'}, 'unavailable': {'type': 'integer'}}}, 'references': {'type': 'array', 'items': {'type': 'object', 'required': ['index', 'reference', 'verdict'], 'properties': {'doi': {'type': 'string'}, 'year': {'type': 'integer'}, 'index': {'type': 'integer'}, 'title': {'type': 'string'}, 'venue': {'type': 'string'}, 'source': {'enum': ['Crossref', 'OpenAlex', 'DOI.org'], 'type': 'string'}, 'authors': {'type': 'array', 'items': {'type': 'string'}}, 'message': {'type': 'string'}, 'verdict': {'enum': ['found', 'mismatch', 'not_found', 'unavailable', 'ambiguous'], 'type': 'string'}, 'reference': {'type': 'string'}, 'retraction': {'type': 'object', 'required': ['status'], 'properties': {'status': {'enum': ['retracted', 'partially_retracted', 'expression_of_concern', 'corrected', 'none_recorded', 'not_checked'], 'type': 'string'}, 'notices': {'type': 'array', 'items': {'type': 'object', 'required': ['type'], 'properties': {'doi': {'type': ['string', 'null']}, 'date': {'type': ['string', 'null']}, 'type': {'type': 'string'}}}}}}, 'differences': {'type': 'array', 'items': {'enum': ['doi', 'title', 'authors', 'year'], 'type': 'string'}}}}}}}
Input schema
{'type': 'object', 'required': ['ticket'], 'properties': {'ticket': {'type': 'string', 'pattern': '^fb_[0-9a-f]{32}$', 'description': 'The ticket id that submit_feedback returned.'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'required': ['ticket', 'status'], 'properties': {'note': {'type': 'string'}, 'reply': {'type': ['string', 'null']}, 'status': {'enum': ['pending', 'answered'], 'type': 'string'}, 'ticket': {'type': 'string'}}}
Input schema
{'type': 'object', 'properties': {'task': {'type': 'string', 'description': 'Alias for query: task phrase to search.'}, 'query': {'type': 'string', 'description': "Optional task keyword or phrase to search tools (e.g. 'recruiter', 'linkedin', 'feedback', 'broken links', 'jobs'). Omit to list all tools."}, 'keyword': {'type': 'string', 'description': 'Alias for query: keyword to search.'}}, 'additionalProperties': True}
Input schema
{'type': 'object', 'required': ['kind', 'message'], 'properties': {'kind': {'enum': ['need_tool', 'need_data', 'bug', 'other'], 'type': 'string', 'description': 'need_tool: a tool you want. need_data: data a tool lacks. bug: something broke. other: anything else about the tools.'}, 'tool': {'type': 'string', 'pattern': '^[A-Za-z0-9_.:-]{1,64}$', 'description': 'Optional: the name of the tool this is about, for example find_tariff_codes.'}, 'message': {'type': 'string', 'maxLength': 1000, 'minLength': 10, 'description': 'What you need or what broke, in plain words, at most 1000 characters. Links, email addresses and phone numbers are removed. Never include secrets or personal details.'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'required': ['ticket', 'status'], 'properties': {'note': {'type': 'string'}, 'reply': {'type': ['string', 'null']}, 'status': {'enum': ['pending', 'answered'], 'type': 'string'}, 'ticket': {'type': 'string'}}}
Recent tool changes
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