{"uid":"cap_gsC-w9N_m_FafTJWM4IgH","slug":"ncbi-structure-mmdb-database-search-via-e-utilities-d2d95b88","name":"NCBI Structure (MMDB) Database Search via E-utilities","description":"Search the NCBI Structure (MMDB) database and return matching UIDs for query {q} via E-utilities. Query: ?q= Returns JSON.","url":"https://clonecho.builda.company/x402/s/ncbi-esearch-structure","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Vo0nv3MRtMX3N4C2tsggj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches the NCBI Structure (MMDB) database using a text query and returns matching UIDs via the E-utilities API.","exampleAgentPrompt":"Search the NCBI Structure (MMDB) database for 'hemoglobin' and give me the matching structure UIDs.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing MMDB UIDs matching the query, typically including a count of results and a list of integer identifiers referencing 3D molecular structure records in the NCBI MMDB database.","failureModes":["Empty result set if no structures match the query term","Query string with special characters may need URL encoding","NCBI E-utilities rate limiting if called too frequently","Network timeout if NCBI upstream is slow","Invalid or malformed query returns zero results"],"whenToPreferThis":"Use this endpoint when you need to programmatically search NCBI's Molecular Modeling Database (MMDB) for 3D structure records by keyword or entity name and retrieve their UIDs for downstream lookups. Prefer this over manual NCBI web searches when automating structural biology workflows or when you need machine-readable UIDs to pass into further NCBI E-utilities calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-08-24T04:08:56.435Z","isFirstParty":false}