{"uid":"cap_06OQMGHy0ANMRnTZ19kOU","slug":"pulsefeed-dev-lab-insertion-path-positive-control-e1-3e196be8","name":"pulsefeed.dev Lab Insertion-Path Positive Control (e1)","description":"Insertion-path positive control for a measurement experiment (x402-foundation/x402#3045): does a v1-envelope settlement still create a catalog row at the current epoch? Returns a static acknowledgement.","url":"https://pulsefeed.dev/lab/e1?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.011","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":"$0.011/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.011","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.011","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bG9WbLHFeJuI6L6yIj3N9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.011","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Acts as an insertion-path positive control for a measurement experiment, confirming whether a v1-envelope x402 settlement still creates a catalog row at the current epoch by returning a static acknowledgement.","exampleAgentPrompt":"Run the x402 insertion-path positive control probe at pulsefeed.dev to confirm that a v1-envelope settlement still creates a catalog row at the current epoch and give me the static acknowledgement back.","exampleUseCases":[{"title":"Baseline x402 infrastructure health check","prompt":"I need to verify that the x402 v1-envelope settlement path is still creating catalog rows correctly — can you hit the positive control endpoint and confirm we get a valid acknowledgement back?"},{"title":"Measurement experiment control validation","prompt":"For my x402 measurement experiment, run the insertion-path positive control probe and tell me whether the catalog row is being created at the current epoch as expected."},{"title":"x402 catalog epoch registration audit","prompt":"Before I run my full x402 experiment suite, hit the e1 positive control endpoint to confirm the settlement-to-catalog-row pipeline is functioning and return the acknowledgement."}],"resultDescription":"A static acknowledgement confirming whether a v1-envelope x402 settlement creates a catalog row at the current epoch. The response serves as a positive control signal for measurement experiments, indicating the insertion path is functioning correctly.","failureModes":["Non-200 HTTP response if the service is down or misconfigured","Payment settlement failure if x402 protocol handshake is incomplete","Static acknowledgement may not reflect real-time catalog state beyond epoch confirmation","Network timeout if pulsefeed.dev infrastructure is unavailable"],"whenToPreferThis":"Use this endpoint when you need a positive control baseline for x402 settlement and catalog insertion experiments — specifically when you need to confirm that v1-envelope settlements correctly register catalog rows at the current epoch. It is a diagnostic/measurement tool, not a production data endpoint.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T18:33:24.421Z","isFirstParty":false,"canonicalSlug":"pulsefeed-dev-lab-insertion-path-positive-control-e1-3e196be8"}