{"uid":"cap_bZEP2FXeTauv2yHXa65nE","slug":"factstamp-watch-portfolio-a61343df","name":"FactStamp Watch Portfolio","description":"Watch a whole list at once, when a bibliography or a dependency manifest has to stay true: up to 25 citations or package versions re-checked every day for 30 days under one token. US$5 a portfolio — 20 cents a reference, under a cent a check. Every reference is answered and signed on purchase, and each real change gets its own signed receipt. Nothing is sent when nothing changed. Pay per call here, or redeem a prepaid pack code (100 credits).","url":"https://factstamp.agentrails.workers.dev/watch/portfolio?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"body":{"type":"object"},"type":{"const":"http"},"method":{"const":"POST"},"bodyType":{"const":"application/json"}},"additionalProperties":true},"output":{"type":"object","required":["type","example"],"properties":{"type":{"const":"json"},"example":{"type":"object"}},"additionalProperties":true}},"additionalProperties":false},"responseSchema":{"type":"json","example":{"token":"fp_7c2a… (shown once)","per_unit":"US$5 for 25 references over 30 days: US$0.20 a reference, about 0.67 of a cent a check.","read_url":"https://factstamp.agentrails.workers.dev/portfolio/3a91c05f8d21e44077","stop_url":"https://factstamp.agentrails.workers.dev/portfolio/3a91c05f8d21e44077/stop","paid_with":{"rail":"x402_pay_per_call","settlement":{"success":true},"list_price_usd":5},"expires_at":"2026-11-05T06:30:00.000Z","item_count":25,"portfolio_id":"3a91c05f8d21e44077"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"5","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":"$5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ugFyurxxKqm39YMflroxN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Starts a 30-day standing re-check subscription for up to 25 citations or package versions at once, returning signed receipts for any detected changes","exampleAgentPrompt":"Set up a 30-day FactStamp portfolio watch for all 25 references in my bibliography — I want signed receipts if anything changes, and the portfolio token so I can check results later.","exampleUseCases":[{"title":"Monthly bibliography integrity monitor","prompt":"I'm submitting a paper next month and want to make sure none of my 20 cited sources get retracted or updated before then — can you set up a 30-day FactStamp portfolio watch on all of them so I get signed receipts if anything changes?"},{"title":"Dependency manifest continuous verification","prompt":"We have a requirements.txt with 18 packages that our production build depends on — please start a 30-day FactStamp portfolio watch on all of them so we're immediately alerted with a signed receipt if any version status changes."},{"title":"Legal document source monitoring","prompt":"I've got a contract that references 12 regulatory documents and I need to know within 30 days if any of those sources are amended or removed — can you set up a FactStamp portfolio watch on all 12 and give me the read URL to check status?"}],"resultDescription":"Returns a one-time portfolio token, a portfolio ID, a read URL for polling current status, a stop URL to cancel, the expiry timestamp (30 days out), the item count, pricing breakdown, and payment settlement confirmation. Subsequent signed receipts are generated per item only when a real change is detected; nothing is sent when nothing changed.","failureModes":["Payment failure via x402 results in no portfolio being created","Exceeding 25 references in the list returns a validation error","Invalid or malformed citation/package identifiers may cause individual items to fail verification","Prepaid pack code invalid or exhausted returns a redemption error","Portfolio token lost after creation cannot be recovered (shown once only)","Network timeout during creation may result in ambiguous payment state"],"whenToPreferThis":"Choose this endpoint when you need to monitor a whole bibliography or dependency manifest — not just a one-time check — and want daily automated re-checks with cryptographically signed change receipts over 30 days. It is more cost-effective than calling single-reference watch endpoints repeatedly for large lists (up to 25 items at $5 flat vs $5 per item). Prefer it over batch single-check endpoints when persistence and change alerting matter, not just a point-in-time answer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:31:59.288Z","isFirstParty":false,"canonicalSlug":"factstamp-watch-portfolio-a61343df"}