{"uid":"cap_3c59zvusvMyYHOZQOffYJ","slug":"lilambd-constants-search-7ce513d5","name":"Lilambd Constants Search","description":"A crossing for play, feeling, language, science and computation — creating states that do not have names yet.","url":"https://api.lilambd.com/units/constants?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"q":{"type":"string","description":"Text to search"},"limit":{"type":"string","description":"Max rows (1-200, default 50)"},"offset":{"type":"string","description":"Rows to skip"}},"additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":[],"count":0,"attribution":"source licence line"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_80hau9FxKpfy3Pbgk3Ywm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches and retrieves a paginated list of named constants (physical, mathematical, or otherwise) from the Lilambd crossing dataset","exampleAgentPrompt":"Search the Lilambd constants dataset for 'planck' and return up to 10 results so I can see what physical constants are available.","exampleUseCases":[{"title":"Lookup physical constant by name","prompt":"Can you search the Lilambd constants dataset for 'boltzmann' and show me the first 5 results, including their values and attribution?"},{"title":"Paginate through full constants list","prompt":"I want to browse all the constants in the Lilambd dataset — fetch 50 starting from row 100 so I can see what's in the middle of the collection."},{"title":"Find math constants for scientific computation","prompt":"Search Lilambd's constants for anything related to 'pi' and give me up to 20 results — I need the exact values and their source attribution for a scientific computing project."}],"resultDescription":"Returns a JSON object containing a 'data' array of matching constant records, a 'count' integer indicating how many records were returned, and an 'attribution' string crediting the source license. The data array may be empty if no matches are found.","failureModes":["Empty data array returned when search query matches no constants","No results if 'q' parameter uses an unrecognized term or spelling","Limit parameter out of range (must be 1-200) may cause an error or default behavior","Payment failure (402) if USDC payment is not provided or insufficient","Offset beyond total record count returns empty data array"],"whenToPreferThis":"Use this endpoint when you need to look up named constants — physical, mathematical, or otherwise — from the Lilambd crossing dataset, especially when you want searchable, paginated, attributed reference data. Prefer this over general web search when you want structured, machine-readable constant values with source attribution in a single API call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-02T18:33:30.531Z","isFirstParty":false,"canonicalSlug":"lilambd-constants-search-7ce513d5"}