{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.nail-q37077","code":"thing-q37077","url":"https://ver.cy/models/thing/q37077/","name":"nail","alternateNames":["rail spike","Pasak","roman nail","clinch nail","wakugi","upholstery nail","picture nail","magnetic nail","horseshoe nail","jobent nail","Repère","chatón"],"kind":"thing","status":"research-draft","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.LIV"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"This model owns an individual fingernail or toenail as a biological structure, including its plate, growth context and relationships to supporting tissues; this interpretation of the undefined registry entry remains provisional.","purpose":"Enable an AI agent to recognise a biological nail, record its visible condition and attachment, and judge whether observation, grooming, protection or further assessment is appropriate.","scope":{"in":["Identification of the digit, body side and organism bearing the nail","Nail plate shape, dimensions, surface and visible colour","Plate attachment and boundaries with the nail bed, folds and free edge","Observed growth, wear, breakage and changes over time","Nail-specific exposure, grooming, coverings and intervention constraints"],"out":["Metal nails and other construction fasteners","The anatomy and function of the whole finger, toe, hand or foot","Systemic diseases and their diagnosis or treatment","Independent models of surrounding skin, wounds or infections","Artificial nail products, cosmetic formulations and grooming instruments","Claws, hooves and other related structures pending confirmation of registry scope"],"boundaries":[]},"distinguishingFeatures":["Check that the referent is a biological plate associated with a digit, rather than a manufactured fastening pin.","Locate a plate seated over a nail bed with proximal and lateral tissue boundaries; a loose hard fragment alone does not establish an intact nail.","Distinguish the biological plate from polish, gel or an artificial extension by recording visible boundaries and application history.","Distinguish the nail plate from adjacent callused skin by its discrete plate boundary and attachment over the nail bed.","Use organism identity and anatomical context when distinguishing a nail from a claw or hoof; shape alone may leave the identification unresolved."],"structure":{"bundles":[{"id":"nail-identity-and-boundaries","name":"Nail identity and boundaries","description":"Establish which biological nail is represented and which visible material belongs to it.","layers":[{"id":"digit-and-organism","name":"Digit and organism","description":"Locate the nail on its bearer and resolve the intended biological referent.","findings":[{"id":"anatomical-nail-identity","name":"Anatomical nail identity","description":"Record the bearer, body side and digit, including unresolved identification.","questions":[{"text":"Which organism, hand or foot, body side and digit bear this nail?","id":"anatomical-nail-identity-q01","kind":"definition"},{"text":"What observation or record supports identifying this structure as a nail rather than a claw, hoof or detached fragment?","id":"anatomical-nail-identity-q02","kind":"provenance"}]}]},{"id":"plate-and-covering-boundaries","name":"Plate and covering boundaries","description":"Separate biological plate from adjacent tissue and applied products.","findings":[{"id":"observable-nail-boundary","name":"Observable nail boundary","description":"Locate visible plate margins and identify areas whose material or boundary cannot be assessed.","questions":[{"text":"Where are the proximal margin, lateral margins and distal free edge visible?","id":"observable-nail-boundary-q01","kind":"boundary"},{"text":"Which areas are biological plate, applied covering or unresolved material, and what evidence supports that distinction?","id":"observable-nail-boundary-q02","kind":"definition"}]}]}]},{"id":"plate-form-and-integrity","name":"Plate form and integrity","description":"Describe the nail plate's geometry, appearance and physical continuity.","layers":[{"id":"plate-and-edge-geometry","name":"Plate and edge geometry","description":"Measure the plate and describe its curvature relative to the digit.","findings":[{"id":"nail-shape-and-dimensions","name":"Nail shape and dimensions","description":"Record dimensions with explicit landmarks and describe the edge profile.","questions":[{"text":"What are the visible plate length, width and free-edge length, and which landmarks and method were used?","id":"nail-shape-and-dimensions-q01","kind":"measurement"},{"text":"How do the plate curvature and lateral edges relate to the surrounding tissue, including any visible contact or overlap?","id":"nail-shape-and-dimensions-q02","kind":"boundary"}]}]},{"id":"surface-and-breaks","name":"Surface and breaks","description":"Map visible appearance and disruptions without assigning an unverified cause.","findings":[{"id":"localized-plate-observations","name":"Localized plate observations","description":"Record the location and extent of colour differences, surface features and discontinuities.","questions":[{"text":"Where are colour changes, opacity differences, ridges or pits visible, and under what lighting or covering conditions?","id":"localized-plate-observations-q01","kind":"measurement"},{"text":"Are splits, peeling, breaks or missing areas present, and do they reach the attached portion of the plate?","id":"localized-plate-observations-q02","kind":"boundary"}]}]}]},{"id":"attachment-and-local-condition","name":"Attachment and local condition","description":"Assess the plate's connection to its supporting tissues and record associated symptoms.","layers":[{"id":"bed-and-fold-interface","name":"Bed and fold interface","description":"Describe visible attachment and the interfaces with surrounding folds.","findings":[{"id":"attachment-and-margin-condition","name":"Attachment and margin condition","description":"Map apparent separation and visible changes at the plate's tissue boundaries.","questions":[{"text":"Which areas appear attached or separated from the nail bed, and how much of the plate can actually be assessed?","id":"attachment-and-margin-condition-q01","kind":"measurement"},{"text":"At which margins are swelling, broken skin, bleeding or discharge observed, and which observations belong to a linked skin or wound record?","id":"attachment-and-margin-condition-q02","kind":"boundary"}]}]},{"id":"symptoms-and-use","name":"Symptoms and use","description":"Connect the nail's condition to reported discomfort and interference with activities.","findings":[{"id":"nail-associated-discomfort","name":"Nail-associated discomfort","description":"Record symptoms and activity limitations separately from visual findings.","questions":[{"text":"What pain, tenderness or altered sensation is reported, by whom, and when did it begin?","id":"nail-associated-discomfort-q01","kind":"provenance"},{"text":"Does the nail catch, press against footwear or interfere with touch or grasping, and during which activities?","id":"nail-associated-discomfort-q02","kind":"measurement"}]}]}]},{"id":"growth-history-and-care-decisions","name":"Growth history and care decisions","description":"Track change and establish the basis for observation, grooming, protection or assessment.","layers":[{"id":"growth-and-exposure-history","name":"Growth and exposure history","description":"Relate repeat observations to growth, trimming, injury and applied products.","findings":[{"id":"dated-nail-change","name":"Dated nail change","description":"Establish what changed and whether observations are comparable.","questions":[{"text":"Between dated observations, how far did a recognisable plate landmark move, and were viewpoint and scale comparable?","id":"dated-nail-change-q01","kind":"measurement"},{"text":"What trimming, filing, injury, repetitive pressure or product application occurred between those observations?","id":"dated-nail-change-q02","kind":"provenance"}]}]},{"id":"nail-specific-action-constraints","name":"Nail-specific action constraints","description":"Connect proposed handling to accessible edges, tissue condition and unresolved concerns.","findings":[{"id":"justified-next-action","name":"Justified next action","description":"Record the proposed action, its basis and the limits of available assessment.","questions":[{"text":"For proposed trimming, filing or protection, which edge or area is involved, and what observations establish that it can be handled appropriately?","id":"justified-next-action-q01","kind":"action"},{"text":"Do pain, disrupted attachment, obscured boundaries or other unresolved observations require deferring manipulation and obtaining qualified assessment?","id":"justified-next-action-q02","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe the structure and growth of nails from anatomy sources.","Note visible nail changes the user reports and suggest seeing a clinician when warranted."],"mustNot":["Diagnose disease from a picture or description of a person's nails.","Cut, file or treat a person's nails without their consent.","Remove or damage a nail on a person or animal.","Use nail clippings for DNA or drug testing without consent or lawful authority."],"requiresHuman":["Any treatment of an ingrown, infected or injured nail.","Collecting nail samples for testing."]},"ethics":{"considerations":["Nail changes can signal illness; false reassurance or alarm both cause harm.","Personal care must respect the body and consent of the person."],"affectedParties":["The person whose nails they are","People who need help with personal care","Nail care workers"]},"owners":{"steward":"The person whose body it is.","roles":[],"masterSystems":[]},"relations":[{"target":"Q11789812","type":"parent","note":"registry parent class"},{"target":"Q15303351","type":"parent","note":"registry parent class"},{"target":"Q1681365","type":"parent","note":"registry parent class"},{"target":"Q1746570","type":"parent","note":"registry parent class"},{"target":"Q2002016","type":"parent","note":"registry parent class"},{"target":"Q39546","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.nail-q37077","Wikidata: Q37077 (https://www.wikidata.org/wiki/Q37077)"]},"properties":{"applicability":"required","items":["Anatomical identity: Organism reference, hand or foot, left or right, digit identifier; unknown permitted","Plate dimensions: Length, width and thickness in mm, with landmarks and method","Free-edge length: mm beyond the observed distal attachment boundary; unassessable permitted","Plate curvature and outline: Described longitudinal curvature, transverse curvature and edge outline","Visible colour and opacity: Colour, translucency, distribution and observation conditions","Surface and structural integrity: Observed ridges, pits, splits, peeling, breaks or material loss, with location and extent","Attachment condition: Apparently attached, partly separated, detached or unassessable, with mapped extent","Local symptoms: Reported pain, tenderness or altered sensation; severity, timing and unknown status","Observed growth: Landmark displacement in mm over a recorded interval; optionally mm/day","Applied covering: Reference to polish, gel, artificial extension, dressing or other covering; none or unknown"]},"recognition":{"applicability":"required","items":["A hard, translucent plate at the tip of a finger or toe.","A pale crescent at the base and a free edge that grows beyond the fingertip."]},"capabilities":{"applicability":"required","items":["Identify and photograph a particular nail using consistent anatomical labels and viewpoints.","Measure visible plate and free-edge dimensions using recorded landmarks.","Compare attachment, surface, colour and growth observations across dated assessments.","Assess whether an exposed edge is suitable for trimming or filing within the actor's competence.","Record or arrange protection from snagging, pressure or further exposure.","Defer manipulation and request qualified assessment when the observed condition or uncertainty warrants it."]},"hazards":{"applicability":"required","items":["Ingrown or damaged nails can become infected.","Unclean tools spread fungal and other infections."]},"interfaces":{"applicability":"required","items":["ASTM F1667, Standard Specification for Driven Fasteners: Nails, Spikes, and Staples, is issued by ASTM International and covers specified types of driven fasteners."]},"context":{"applicability":"required","items":["Metal nails are used in construction, carpentry, packaging and repairs to fasten materials such as timber.","Their suitability depends on the materials joined, expected loads, exposure conditions and required resistance to withdrawal."]}},"sources":[{"title":"Wikidata item Q37077: nail","url":"https://www.wikidata.org/wiki/Q37077","note":"identity and sense of the item"},{"title":"Wikipedia: Nail (fastener)","url":"https://en.wikipedia.org/wiki/Nail_%28fastener%29","note":"general description of the item"}],"openQuestions":["Does registry entry vr.tr.nail-q37077 explicitly mean human fingernails and toenails, or does it include nails of other organisms?","Does the catalogue already contain a world model that owns this concept or the broader nail apparatus?","Should the nail matrix, bed and folds be owned by this model or represented through relationships to neighbouring anatomical models?","Which measurement landmarks and observation methods provide sufficiently repeatable nail dimensions and growth comparisons?","Which evidence-based criteria should govern routine grooming, deferred manipulation and referral across different bearers and care settings?"],"resources":{"spec":"/models/things/publications/thing-q37077/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q37077/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-06T21:46:34Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{},"score":1.0}}