{"uid":"cap_Sfexesz3GoJ0mLhihhKoZ","slug":"forgemesh-chemical-element-info-api-5e34f1ce","name":"ForgeMesh Chemical Element Info API","description":"Chemical element API: atomic number, atomic mass, electron shells, electronegativity, and physical properties for any element. Local dataset, instant.","url":"https://x402.forgemesh.io/chemical-element-info","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"element":{"type":"string","description":"symbol, name, or atomic number"}}},"responseSchema":{"type":"json","example":{"name":"Iron","symbol":"Fe","category":"transition metal","atomic_mass":55.845,"atomic_number":26,"melting_point_k":1811.15}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yyKayV3Fi6mRVZVBEEdUE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns atomic number, atomic mass, electron shells, electronegativity, and physical properties for any chemical element given its symbol, name, or atomic number.","exampleAgentPrompt":"What are the atomic mass, electronegativity, and electron shell configuration for gold — can you look up the chemical element properties for Au?","exampleUseCases":null,"resultDescription":"Returns a structured data object with the element's atomic number, atomic mass, electron shell distribution, electronegativity value, and physical properties (such as melting point, boiling point, density, and phase at standard conditions), served from a local dataset with near-instant response.","failureModes":["Unknown element symbol, name, or number returns an error or empty result","Misspelled element name may not resolve correctly","Atomic number out of valid range returns an error","Missing or empty 'element' field in request body causes a validation error"],"whenToPreferThis":"Choose this endpoint when you need fast, structured chemical element data (atomic properties, electron configuration, electronegativity, physical constants) by symbol, name, or atomic number — ideal for chemistry education tools, material science lookups, or any agent needing precise periodic table data without hitting a heavy external API. Costs $0.002 USDC per call and responds instantly from a local dataset.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:54:52.266Z","isFirstParty":false}