{"uid":"cap_qw3KTSA6EBMmFJoUOBkV-","slug":"ncbi-bioproject-e-search-1f083fb2","name":"NCBI BioProject E-Search","description":"Search NCBI BioProject and return matching project UIDs for query {q} via E-utilities. Query: ?q= Returns JSON.","url":"https://clonecho.builda.company/x402/s/ncbi-esearch-bioproject","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":"unknown","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_IO9EFRCgrri8irnChyThS","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":"Search NCBI BioProject database and return matching project UIDs for a given query using E-utilities","exampleAgentPrompt":"Search NCBI BioProject for projects related to 'human gut microbiome metagenomics' and give me the matching project UIDs.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing BioProject UIDs matching the search query, including result count and identifiers that can be used to fetch detailed project records from NCBI.","failureModes":["Empty result set if query matches no BioProject entries","Malformed or ambiguous query may return irrelevant UIDs","NCBI E-utilities rate limiting or downtime causing request failure","Very broad queries may return truncated result sets","Special characters in query string not properly URL-encoded causing 400 error"],"whenToPreferThis":"Use this endpoint when you need to programmatically search NCBI's BioProject database to find project UIDs for downstream retrieval of genomics or biological study metadata. Prefer this over direct NCBI API access when you need a simple paid-per-call interface without managing NCBI API keys or rate limits yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:56.704Z","isFirstParty":false}