{"uid":"cap_sQnnZYZqIiCqtJqAIugYr","slug":"capability-negotiation-preflight-55eb9d2c","name":"Capability Negotiation Preflight","description":"Compare required and offered agent capabilities before execution","url":"https://phion.systems/v1/paid/trust/capability-negotiation-preflight?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["body"],"properties":{"body":{"type":"object","additionalProperties":true}}},"output":{"type":"object","required":["example"],"properties":{"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":{"type":"json"},"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_8sNRkFbbJgtDnnq3R9kk7","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":"Compares required agent capabilities against offered capabilities before task execution to determine compatibility","exampleAgentPrompt":"Before we hand off this task to the downstream agent, check if its offered capabilities actually cover what we need — run a capability negotiation preflight so we know upfront if there are any gaps.","exampleUseCases":[{"title":"Pre-execution capability gate for agent pipeline","prompt":"I'm about to kick off a multi-step agent pipeline and I need to confirm that the agent handling the payment step actually supports the capabilities required — can you run a capability preflight check before we proceed?"},{"title":"Agent marketplace compatibility screening","prompt":"We're selecting an agent from the marketplace to handle our data extraction job — before we commit, check whether its offered capabilities match what our workflow requires and flag any gaps."},{"title":"Autonomous task handoff safety check","prompt":"Before my orchestrator hands off this research task to a subagent, I want a preflight check to make sure the subagent's capabilities line up with what's needed so we don't waste budget on an incompatible agent."}],"resultDescription":"Returns a structured comparison of required versus offered capabilities, identifying gaps, mismatches, or full compatibility, enabling the calling agent to decide whether to proceed, renegotiate, or reject the execution plan before committing resources.","failureModes":["Missing or malformed capability sets in the request body leading to validation errors","Required capabilities not expressed in a recognized schema format","Offered capabilities empty or undefined causing incomplete comparison","Service unavailability returning a non-200 status","Ambiguous capability identifiers that cannot be resolved to a known capability type"],"whenToPreferThis":"Use this endpoint when you need a deterministic, signed preflight check before committing an agent task or budget — especially in multi-agent orchestration scenarios where capability mismatches would cause downstream failures. Prefer it over manual checks when you need an auditable, trust-layer-backed result that can be logged or disputed later.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:30:43.811Z","isFirstParty":false,"canonicalSlug":"capability-negotiation-preflight-55eb9d2c"}