{"uid":"cap_THqXCvwNCJJ3TOt1vPxLv","slug":"dep-halowerk-com-maintainer-concentration-calculator-459ae6e7","name":"dep.halowerk.com Maintainer Concentration Calculator","description":"Measures the share held by the largest maintainer from supplied ownership weights. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. ","url":"https://dep.halowerk.com/v1/maintainer-concentration","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"maintainers":{"type":"array","items":{"type":"object","required":["name","weight"],"properties":{"name":{"type":"string","maxLength":512,"minLength":1,"description":""},"weight":{"type":"number","maximum":1000000000000,"minimum":0,"description":""}},"additionalProperties":false},"maxItems":10000,"minItems":1}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2lfx_PyJyV5HBDYfg1F1a","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates the ownership share held by the single largest maintainer from a supplied list of maintainers and their weights, returning a concentration metric for dependency health analysis.","exampleAgentPrompt":"Calculate the maintainer concentration for this package — the maintainers and their ownership weights are: Alice with 6500, Bob with 2000, Carol with 1500. What share does the top maintainer hold?","exampleUseCases":[{"title":"Supply chain risk audit for a library","prompt":"I have a critical open source dependency with four maintainers — their ownership weights are: JohnDoe: 80000, JaneSmith: 10000, devguru99: 5000, patchbot: 5000. What fraction of control does the single largest maintainer have?"},{"title":"Comparing maintainer diversity across packages","prompt":"For package A, the maintainers and weights are: alice: 9000, bob: 500, carol: 500. Compute the top-maintainer concentration so I can compare it to another package."},{"title":"Automated SBOM health check pipeline","prompt":"As part of our dependency health check, calculate the largest maintainer's share for this package where the maintainers are: org-bot with weight 100000, contrib1 with weight 20000, contrib2 with weight 5000, contrib3 with weight 1000."}],"resultDescription":"Returns the fractional share (0–1) held by the single largest maintainer by weight, along with any unavailable fields listed in unavailable_fields, and metadata disclosing whether the value is derived or source-backed (including source, time window, and age where applicable).","failureModes":["Empty or missing maintainers array returns validation error","All weights zero may produce null or undefined concentration","More than 10,000 maintainer entries rejected due to maxItems limit","Negative weights rejected by schema minimum constraint","Missing required 'name' or 'weight' fields on any item causes request failure","Network timeout on very large maintainer arrays"],"whenToPreferThis":"Use this endpoint when you have explicit numerical ownership or contribution weights for a package's maintainers and need to quantify concentration risk — specifically the share commanded by the single largest stakeholder. It is ideal for supply chain audits, SBOM health scoring, or automated dependency vetting pipelines where bus-factor and single-point-of-failure risk must be measured programmatically. Prefer it over manual heuristics when you have structured weight data from registries or internal measurements.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:52:57.598Z","isFirstParty":false}