{"uid":"cap_fZKN-Q6P4zcyGtKAnE4D9","slug":"tenjin-eth-r-d-daily-eip-8333-ffg-checkpoints-article-8e9d7414","name":"Tenjin ETH R&D Daily — EIP-8333 FFG Checkpoints Article","description":"EIP-8333 merged as a Draft Core EIP, replacing first-slot FFG checkpoint roots with the last block before the epoch. EIP-8037 also picked up a 0xEF-prefix deployment-halt state-gas test, and consensus-specs clarified payload-gossip validation errors.","url":"https://tenjin.blog/api/read/eth-rd/eth-r-d-daily-eip-8333-moves-ffg-checkpoints-to-the-boundary-block","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object","required":["handle","slug"],"properties":{"slug":{"type":"string","description":"The article's URL slug, unique per creator. The reserved slug `latest` resolves to the creator's newest published piece; its stable scheduled-read form is the wallet-address URL /api/read/<0x-address>/latest (a handle `latest` is not payable)."},"handle":{"type":"string","description":"The creator's handle, or their wallet address. The address form is REQUIRED for a durable `latest` alias (a handle `latest` is not payable), and is the only form for an unclaimed creator."}}},"queryParams":{"type":"object","required":[],"properties":{},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hZmM47T8Skix91sVfzFuh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the full text of a pay-per-read article summarizing EIP-8333 (FFG checkpoint migration to boundary block), EIP-8037, and consensus-spec payload-gossip updates from Ethereum R&D daily news.","exampleAgentPrompt":"Can you fetch and read me the Tenjin eth-rd article about EIP-8333 moving FFG checkpoints to the boundary block? The handle is eth-rd and the slug is eth-r-d-daily-eip-8333-moves-ffg-checkpoints-to-the-boundary-block.","exampleUseCases":[{"title":"Ethereum core developer research brief","prompt":"Pull the full text of the Tenjin eth-rd daily article on EIP-8333 — I need to understand how FFG checkpoints are being moved to the last block before the epoch and what changed in consensus specs around payload gossip validation."},{"title":"EIP status tracking for protocol analysts","prompt":"Get me the Tenjin eth-rd piece on EIP-8333 being merged as a Draft Core EIP — I want the details on the new FFG checkpoint root rules and also what EIP-8037 introduced with the 0xEF-prefix deployment halt."},{"title":"Automated Ethereum R&D digest ingestion","prompt":"Fetch the full pay-per-read article from Tenjin's eth-rd channel with the slug eth-r-d-daily-eip-8333-moves-ffg-checkpoints-to-the-boundary-block so I can summarize it for our weekly protocol newsletter."}],"resultDescription":"A JSON object containing the full text of the Tenjin article covering EIP-8333's progression to Draft Core EIP status (replacing first-slot FFG checkpoint roots with the last block before the epoch), EIP-8037's 0xEF-prefix deployment-halt state-gas test, and consensus-specs clarifications on payload-gossip validation errors. Access requires paying the x402 challenge at $0.10 USDC per call.","failureModes":["Payment not submitted or rejected — x402 challenge not fulfilled, article text not returned","Invalid or mismatched slug — slug does not correspond to a published article, returns 404","Invalid creator handle — handle 'eth-rd' not found or unclaimed, returns error","Article not yet published or removed — slug resolves to nothing","Network or server error — 5xx response from tenjin.blog"],"whenToPreferThis":"Use this endpoint when you specifically need the full text of the Tenjin eth-rd daily article covering EIP-8333, EIP-8037, and related consensus-spec updates. It is ideal for AI agents that need to ingest Ethereum protocol research content paywalled under x402 micropayments, where you already know the exact creator handle and article slug.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:53:31.151Z","isFirstParty":false}