pith
Registry code: aa1585f6c248c56a
Pith (pith.science) machine-reviews new scientific papers and publishes for each a verdict, novelty and correctness scores, the core claim, the weakest assumption, and a falsifier: the observation that would settle the claim. For a specific paper, route by the requested information: use analyze_paper_claims for what it asserts, its premises, logical dependencies, argument structure, or reasoning; use get_paper_falsifier for a test or result that could disprove it; use get_review for Pith's overall evaluation, scores, and summary. All three accept an arXiv id or URL, DOI, or Pith Number. For a…
- endpoint
- https://pith.science/mcp
- protocol
- streamable-http ·2025-06-18
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- Is pith live?
- Yes — it answered the hub's last check (checked 1h ago). It answered 99% of checks over the last 30 days.
- Is pith free to use?
- Yes — the hub reached it with no key and no payment.
- What tools does pith have?
- 24 tools: get_claims, verify_citation, get_paper_falsifier, citation_neighbors, paper_bridge, paper_connections, get_falsifier, analyze_paper_claims, ….
- Is pith safe to connect?
- The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
90 days 98.4%· all time 98.4%
last good check
of 24 tools
- degraded → live
- live → degraded· timeout after 20000ms
- degraded → live
- live → degraded· timeout after 20000ms
- degraded → live
- used for
- get a machine review of a scientific paper
- find the falsifier for a paper claim
- check which papers support a claim
- verify a citation against a paper
- takes → gives
- text → data, text
- tools
- 24 reads
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record_coverage reads open 19h ago
Sources read and levels run for one paper's record, or the number of stored records by tier. Call before treating an empty result as a finding: an empty list means nothing in the examined scope matched.
{ "type": "object", "title": "record_coverageArguments", "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "default": "", "description": "One paper, or empty for the whole record store." } } }arguments 12 linesmy_reviews reads open 4h ago
Pith's machine review verdict and the count of published signed human reviews for each paper claimed on the account behind your key. Needs a personal key.
{ "type": "object", "title": "my_reviewsArguments", "properties": {} }arguments 5 lineslatest_reviews reads open 4h ago
The papers Pith reviewed most recently, newest first. Call this when the user asks what is new, notable, or recently reviewed in a field or overall. days caps how far back to look (max 90).
{ "type": "object", "title": "latest_reviewsArguments", "properties": { "days": { "type": "integer", "title": "Days", "default": 7 }, "limit": { "type": "integer", "title": "Limit", "default": 10 }, "category": { "anyOf": [ { "type": "string" }, { "type": "null" } ], "title": "Category", "default": null, "description": "Field to filter by: an arXiv archive ('cond-mat'), a full category ('cond-mat.str-el'), or a plain field name like 'condensed matter' or 'machine learning'; omit for all fields." } } }arguments 29 linesmy_citations reads open 4h ago
For the papers claimed on the account behind your key: how many papers cite each, whether they cite it as support, extension or disagreement, and the citing sentence quoted. Call when the user asks who is building on or disputing their work. Needs a personal key.
{ "type": "object", "title": "my_citationsArguments", "properties": {} }arguments 5 linesget_claims reads unknown never probed
Alias of analyze_paper_claims: the same ledger of what the paper asserts, its premises, machinery, and falsifier, in argument order.
{ "type": "object", "title": "get_claimsArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linesverify_citation reads unknown 26h ago
Whether the cited paper's own sentences support what a sentence attributes to it: supports, partly supports (a condition is missing), contradicts, or not addressed, with the single best sentence from the paper quoted. Call this before citing a paper for a specific claim, or to check a citation in a draft or an answer. It reads the paper's abstract, and its full text where Pith holds it; the examined field says which. On real citations its verdict agreed with two blind model families 139 times in 160, most differences being partly supported versus not addressed (https://pith.science/connected-record).
{ "type": "object", "title": "verify_citationArguments", "required": [ "sentence", "cited" ], "properties": { "cited": { "type": "string", "title": "Cited", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." }, "sentence": { "type": "string", "title": "Sentence", "description": "The sentence that cites the paper, as written in a draft, an answer or a paper." } } }arguments 20 linesget_paper_falsifier reads unknown 19h ago
The falsifier for one specific paper's core claim: the concrete observation, experiment, or computation that would settle or disprove it, plus how many people are watching for that result. Use this when the user asks what would falsify the paper, prove it wrong, test its central claim, settle the claim, or show that the conclusion fails.
{ "type": "object", "title": "get_paper_falsifierArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linescitation_neighbors reads unknown 12h ago
One hop from a paper: every reference entry with its resolved work identity, the papers that cite it, and, where a record exists, the citing sentences with their labeled intent. An edge means the paper names the other work, not that the work supports the citing claim.
{ "type": "object", "title": "citation_neighborsArguments", "required": [ "arxiv_id" ], "properties": { "limit": { "type": "integer", "title": "Limit", "default": 12, "maximum": 40, "minimum": 1, "description": "Graph rows per side. 1 to 40." }, "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." }, "direction": { "type": "string", "title": "Direction", "default": "both", "description": "out: works this paper cites. in: papers that cite it. both." } } }arguments 28 linespaper_bridge reads unknown 12h ago
Whether either paper cites the other, the resolved works both cite (on or off arXiv), and the papers that cite both.
{ "type": "object", "title": "paper_bridgeArguments", "required": [ "a", "b" ], "properties": { "a": { "type": "string", "title": "A", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." }, "b": { "type": "string", "title": "B", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." }, "limit": { "type": "integer", "title": "Limit", "default": 12, "maximum": 40, "minimum": 1, "description": "Shared graph neighbors per side. 1 to 40." } } }arguments 28 linespaper_connections reads unknown 12h ago
What other arXiv papers do with this paper, and what it does with the arXiv papers it cites: builds on, uses the method or tool, uses the data, compares with, cites as support or background, or contests. Each group counts distinct papers and quotes the citing authors' own sentences. Labels come from each citing paper's LaTeX source typed by Pith's classifier and are shown only at intent probability 0.8 or more (support at 0.95, contests at 0.7); the rest are counted as unlabelled. Measured agreement of every label with independent model families: https://pith.science/connected-record. Use this for how a result has been taken up, challenged or built on across arXiv.
{ "type": "object", "title": "paper_connectionsArguments", "required": [ "arxiv_id" ], "properties": { "quotes": { "type": "integer", "title": "Quotes", "default": 5, "maximum": 20, "minimum": 1, "description": "Quoted sentences per group. 1 to 20." }, "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 22 linesget_falsifier reads unknown 19h ago
Alias of get_paper_falsifier: the same falsifier and watcher count.
{ "type": "object", "title": "get_falsifierArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linesanalyze_paper_claims reads unknown never probed
The structured argument of one specific paper: what it actually asserts, the premises it assumes, the machinery connecting those premises to the claim, and the falsifier, as short labeled statements in argument order (premise, machinery, claim, falsifier). Use this for requests about a paper's claims, premises, assumptions, reasoning, logical dependencies, logical structure, argument structure, or conclusion. Each entry includes its text, role, type, and status.
{ "type": "object", "title": "analyze_paper_claimsArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linessearch_claims reads unknown never probed
Full-text search over every scientific claim Pith has extracted, across all reviewed papers. Call this when the user asks who claims something, whether a claim appears in the recent literature, or what evidence bears on a statement. Returns each matching claim with its paper, verdict, and review link.
{ "type": "object", "title": "search_claimsArguments", "required": [ "query" ], "properties": { "limit": { "type": "integer", "title": "Limit", "default": 10 }, "query": { "type": "string", "title": "Query", "description": "The claim or statement to look for, in plain words." } } }arguments 19 linescheck_claim reads unknown never probed
Which arXiv papers support a scientific statement, which contradict it, and which study it without deciding, each with the paper's own main claim quoted and the classifier's probability. Call this before asserting a scientific result, when a user asks whether something is established or disputed, or when two sources disagree. Candidates are papers whose title and abstract match the statement's words, plus papers Pith's connected record links to them as stating the same or a conflicting result; a paper that states the result in other words can be missed, so an empty answer is not evidence of absence. Reported supporters and contradictions agreed with two blind model families 110 times in 112 (https://pith.science/connected-record).
{ "type": "object", "title": "check_claimArguments", "required": [ "statement" ], "properties": { "limit": { "type": "integer", "title": "Limit", "default": 16, "maximum": 24, "minimum": 4, "description": "Candidate papers to judge. 4 to 24." }, "statement": { "type": "string", "title": "Statement", "description": "One scientific statement in plain words, for example a result a user asserts or that you are about to assert." } } }arguments 22 linesget_record reads unknown 15h ago
The compiled record of one paper: the authors' own sentences, arranged with typed labels. It carries the main claim in the authors' words, each abstract sentence's role, results with the qualifications the authors state beside them, the conditions of the study, measurements with where they appear, the arXiv listing abstract compared with the manuscript's abstract, resources including what is not stated, the authors' own limitations, how the paper uses its references, and what was and was not examined. No sentence in it was written by a model; every label carries its probability. Use this for what a paper states and under what conditions, including papers Pith has not reviewed, where get_review reports no review. Accepts an arXiv id or URL, DOI, or Pith Number.
{ "type": "object", "title": "get_recordArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linesget_review reads unknown 15h ago
Pith's review of one specific paper, in one call: the verdict, confidence, novelty and correctness scores, one-line summary, weakest assumption, and the paper's argument as short labeled statements (premise, machinery, core claim, falsifier) already extracted, so the paper's premises and logical structure can be stated without reading the PDF. Use this for any question about a specific paper: what it asserts, what it assumes, how the argument runs, how sound it is, or what Pith concluded. Accepts an arXiv id or URL, DOI, or Pith Number.
{ "type": "object", "title": "get_reviewArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linesget_reviewer_record reads unknown 15h ago
A reviewer's published signed reviews and, when present, their calibration record (Brier score, open predictions, positivity skew). Call this when the user asks about a named Pith reviewer or how trustworthy a reviewer's track record is.
{ "type": "object", "title": "get_reviewer_recordArguments", "required": [ "handle" ], "properties": { "handle": { "type": "string", "title": "Handle" } } }arguments 13 linesget_signed_reviews reads unknown never probed
Published human signed reviews of one paper: reviewer identity, axis deltas against the machine review, claim verdicts, defects, predictions, and who paid. Call this when the user asks what human experts said about a paper, on top of the machine review.
{ "type": "object", "title": "get_signed_reviewsArguments", "required": [ "arxiv_id" ], "properties": { "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 linessearch_papers reads unknown 1h ago
Search Pith-reviewed papers by title and abstract. Call this when the user names a research topic, phenomenon, method, or paper title without an identifier, or asks whether Pith has reviewed anything on a subject. Each result carries the paper's verdict, summary, and review link.
{ "type": "object", "title": "search_papersArguments", "required": [ "query" ], "properties": { "limit": { "type": "integer", "title": "Limit", "default": 10 }, "query": { "type": "string", "title": "Query", "description": "Topic, phenomenon, method, or paper title in plain words." } } }arguments 19 linescheck_my_draft reads unknown 1h ago
Resolve each reference in a draft, flag retracted works, and for arXiv papers show how later papers cite them: as support, and whether any contest them, with the contesting sentence quoted. Call before a submission or when a user wants their reference list checked. Needs a personal key; counts against a daily allowance.
{ "type": "object", "title": "check_my_draftArguments", "required": [ "text" ], "properties": { "text": { "type": "string", "title": "Text", "maxLength": 200000, "minLength": 20, "description": "The draft's reference list: BibTeX, a LaTeX bibliography or plain reference lines." } } }arguments 16 linesfind_passages reads unknown 1h ago
Author sentences the classifier labeled with one role, across every stored record, each with its probability and paper. Abstract-tier records cover limitation, result and main_claim; full-text records add condition, citation and measurement.
{ "type": "object", "title": "find_passagesArguments", "required": [ "role" ], "properties": { "role": { "type": "string", "title": "Role", "description": "limitation, condition, result, main_claim, citation, or measurement." }, "limit": { "type": "integer", "title": "Limit", "default": 20, "maximum": 50, "minimum": 1, "description": "1 to 50." }, "query": { "type": "string", "title": "Query", "default": "", "description": "Words to match in the author's sentence. Empty returns the role." }, "arxiv_id": { "type": "string", "title": "Arxiv Id", "default": "", "description": "One paper, or empty for every stored record." } } }arguments 34 linespaper_packet reads unknown 8h ago
One paper's compiled record, small enough to hold beside others: the main claim and contribution in the authors' words, each abstract sentence with its role and probability, paper-level labels, and, for full-text records, conditions, measurements, results and limitations, with totals so a capped list is not mistaken for the whole paper.
{ "type": "object", "title": "paper_packetArguments", "required": [ "arxiv_id" ], "properties": { "limit": { "type": "integer", "title": "Limit", "default": 8, "maximum": 20, "minimum": 1, "description": "Items per list. 1 to 20." }, "arxiv_id": { "type": "string", "title": "Arxiv Id", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 22 linesask_field reads unknown 8h ago
Read the papers closest to a question and return, for each, whether its own abstract sentences answer yes, no or not addressed, with the deciding sentence quoted. Call when a user asks whether something holds across the literature. Candidates are chosen by meaning, so a paper that answers in different words can be missed. Needs a personal key; counts against a daily allowance.
{ "type": "object", "title": "ask_fieldArguments", "required": [ "question" ], "properties": { "field": { "type": "string", "title": "Field", "default": "", "description": "Optional arXiv category such as gr-qc or math.CO; empty for all fields." }, "question": { "type": "string", "title": "Question", "maxLength": 600, "minLength": 15, "description": "A yes-or-no question the literature could answer." } } }arguments 22 linesresolve_paper reads unknown 8h ago
Turn a pasted arXiv id, arXiv URL, DOI, or Pith Number into the arXiv id the other tools key on. ``resolved`` is false when the input did not become an arXiv id.
{ "type": "object", "title": "resolve_paperArguments", "required": [ "reference" ], "properties": { "reference": { "type": "string", "title": "Reference", "description": "Any form the user gave: bare arXiv id (2401.00001), arXiv abs/pdf URL, DOI or doi.org URL, or Pith Number." } } }arguments 14 lines
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