{"uid":"cap_HZV9xhIGCoydQrZxiTpWE","slug":"ncbi-protein-clusters-e-search-fedb202e","name":"NCBI Protein Clusters E-Search","description":"Search the NCBI Protein Clusters database and return matching UIDs for query {q} via E-utilities. Query: ?q= Returns JSON.","url":"https://clonecho.builda.company/x402/s/ncbi-esearch-proteinclusters","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__Zsk9pSEgQAALmZ_QFW5A","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 Protein Clusters database and returns matching UIDs for a given query using NCBI E-utilities.","exampleAgentPrompt":"Search the NCBI Protein Clusters database for records matching 'cytochrome oxidase' and give me the matching UIDs.","exampleUseCases":null,"resultDescription":"A JSON response containing NCBI Protein Cluster UIDs that match the submitted search query, following the standard E-utilities ESsearch response format.","failureModes":["Empty result set when query matches no protein clusters","Invalid or malformed query string returns an error from NCBI E-utilities","Rate limiting or timeout if NCBI upstream is slow or unavailable","Payment failure returns 402 before the request is forwarded","Ambiguous query terms may return large UID sets without ranking"],"whenToPreferThis":"Use this endpoint when you need to programmatically search NCBI's Protein Clusters database and retrieve UIDs for downstream lookups, rather than using the NCBI web interface or building E-utilities requests manually. Ideal for bioinformatics workflows that need to identify protein cluster records by name, gene, or sequence keyword.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:09:24.625Z","isFirstParty":false}