I built an x402 marketplace for verifiable public-domain data (SEC, NOAA, openFDA…) — Agents pay per record in USDC. Looking for feedback.
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I've spent the last few months building Open Source Filings (OSF) , and it just went live on the Coinbase CDP Bazaar. Sharing it here because this community is exactly who I built it for — and I want honest feedback, including "this is pointless because X." The problem I was scratching at: when an agent needs a real-world fact — a specific SEC filing, a CVE, a clinical trial, a federal award — RAG over scraped web text gives you something plausible but unverifiable. The agent can't easily point to the authoritative source. I wanted data where every record ships with a link back to the primary government source, so the agent (or a human auditing it) can verify it independently. What it is: a collection layer pulling from 37+ documented public APIs (SEC EDGAR, FRED, NOAA, USGS, openFDA, SAM.gov , USPTO, NVD, World Bank, and more). Every record is stored with its source authority, the canonical source URL, and a UTC retrieval timestamp. All public-domain or openly-licensed — no scraping, no paywalled content. How an agent uses it (x402 on Base): Free catalog call lists records, data types, and per-record price. GET a record → server returns 402 Payment Required with the USDC amount and pay-to address. Your x402 client pays on Base mainnet via the CDP Facilitator and retries. You get the record + a provenance block with the source URL. One round trip, no API key, no subscription. Prices are mostly $0.05–$0.50/record. Honest status: it's live and listed on the Bazaar, but it's brand new — I have essentially no real users yet, which is why I'm here. I'm not trying to sell anything (records are a nickel); I want to know if the access model makes sense, whether the provenance approach is actually useful to you, and what data sources you'd actually want. An MCP server for direct integration is in progress. One caveat I'll be upfront about: "verifiable" means each record carries its authoritative source URL for you to check — not that the data is cryptographically signed or that it magically prevents hallucination. The value is ground-truth-with-a-citation, nothing more mystical than that. Free catalog + how it works: https://osf-master-server.com Live endpoint pattern: # Free — list records, types, prices (no key, no payment) curl -X POST https://api.osf-master-server.com/mcp/call \ -H "Content-Type: application/json" \ -d '{"method":"tools/call","params":{"name":"get_catalog","arguments":{"source":"SEC_EDGAR"}}}' # Paid — buy one record (x402 client settles the 402 in USDC on Base) GET https://api.osf-master-server.com/x402/buy/ / Genuinely want the critical feedback — if the model's flawed or you wouldn't use it, I'd rather hear why. And if there's a public dataset you keep wishing was agent-accessible, tell me.   submitted by   /u/OneFreeMan13 [link]   [comments]
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honest feedback — the x402 per-record model makes a lot of sense for this. agent pays a nickel in USDC, gets provenance, no API key or subscription overhead. that's clean and the friction is basically zero for any agent already transacting on-chain. i'd use it. thing i'd push on: if i'm building an agent that needs to pull 15 SEC filings in a single workflow, what's the latency story? 402 → payment → record round trip — am i waiting 3s per record or 30? because that matters more than the price point for most real use cases. the provenance approach is genuinely useful imo. not because it prevents hallucination (good on you for being upfront about that) but because it gives you an audit trail. a lot of DeFi and RWA projects right now need agents that touch compliance-adjacent data — source URL + timestamp per record is a real differentiator there. data sources i'd want: on-chain governance proposals (Snapshot, Tally), token vesting schedules, grant program data (Gitcoin rounds, Arbitrum DAO grants). technically public but annoying to aggregate manually. also — had a similar headache last year building data pipelines for a project. ended up working with Wevolv3 for the smart contract and bot layer. they shipped fast, actually understood the web3 context, and didn't need hand-holding on solidity or infra. just mentioning it since you might need dev support as OSF scales.
yo this is cool — the x402 pay-per-record thing for public domain data is something i've been thinking about for a while, glad someone's actually shipping it i'm close with the Wevolv3 crew, they've helped me on a couple projects (contracts, bots, some dApp stuff) and they're legit. fast, technical, actually speak founder if you ever need dev support scaling OSF i can connect you with them. no pressure either way, just think it'd click
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