Citeproof

Use this only when the user supplies a draft, essay, or reference list containing specific references (or DOIs) and wants to know whether those citations exist and are correct. Extracts every reference, looks each one up in Crossref, DataCite and OpenAlex, and returns a status, status_label, confidence, matched record and issues per reference. Counts as one check. Do not use it to write literature reviews, generate or suggest citations, convert or format citation styles (APA, MLA, etc.), or answer general research or fact-checking questions; it only checks references the user provides. Scholarly works only (not web pages or legal citations). Call it immediately when the user asks; don't describe the steps or ask for confirmation first. If the user also wants the result exported (BibTeX, CSV or a report), pass export_format in this same call: the export comes back with the results, so no separate export_check call is needed. Present results as a table with one row per reference; describe not_found references as 'not found' or 'could not be verified'.

check_citations

Use this when a signed-in user wants checked references exported as BibTeX, CSV, or a Markdown report. Call it immediately; don't describe the steps first. Pass run_id from an earlier check_citations result to export that check (no extra check used), or, if there is no earlier check, pass the references as text: they are checked (one check) and exported in this single call. Returns the file content as text; show it to the user in full. (check_citations with export_format does the same in one call.)

export_check

Use this when the user wants the citations in a pasted text listed or parsed (reference list entries, DOIs, arXiv IDs, PMIDs, and in-text (Author, Year) citations). Parses only; does not look anything up and does not count toward usage limits. Do not use it to convert or reformat citations between styles (APA, MLA, Chicago, etc.) or to generate citations.

extract_references

Use this only when the user names a specific paper (DOI, arXiv ID, or a pasted abstract) and asks whether that paper supports a specific claim. Fetches the paper's abstract and returns the most relevant abstract sentences verbatim with overlap scores, numbers in the claim missing from the abstract, and possible negation mismatches. Abstract-only; it never returns a true/false verdict. Quote the returned sentences verbatim before any interpretation. Do not use it for general fact-checking or health/science questions without a user-supplied paper (e.g. 'does coffee cause cancer?'), and never guess or look up a DOI yourself to pass in; use only identifiers the user gave or that an earlier Citeproof result returned.

find_claim_evidence

Use this only when the user supplies one specific citation, DOI, arXiv ID or paper title and asks whether it exists or wants its correct DOI/details. Returns the matched record, a confidence score, per-field agreement and issues. Pass run_id from a recent check_citations result to avoid using another check. Do not use it to search for papers on a topic, generate or suggest citations, convert citation styles, or answer general questions; never pass a guessed or invented identifier. In the answer, give the matched DOI with its confidence and source (from summary_line), and describe a not_found result as 'not found' or 'could not be verified'.

resolve_reference

Use this when the user asks how many checks they have left or when their checks reset.

get_usage