OSF is a live, API-first marketplace of public-domain government and scientific data — collected from primary sources, stamped with provenance, and sold to autonomous agents that pay per record over x402 micropayments on Base. Available as a paid MCP server (listed in the official MCP Registry) and over plain HTTP — discoverable on the Coinbase CDP Bazaar.
A new class of autonomous software — research agents, trading bots, compliance screeners, monitoring systems — needs facts it can cite, not text it has to guess at. The open data exists, scattered across hundreds of government and scientific APIs in incompatible formats. OSF does the unglamorous work of collecting it, normalizing it onto one schema, and attaching an unbroken trail back to the primary source — then makes it purchasable, one record at a time, by any agent that speaks x402.
Every record carries a link back to the exact filing, dataset, or API response it came from, so an agent can independently verify each fact against its authoritative source. The verifiable trail — not just the data — is what it pays for.
Deterministic per-record pricing in fractions of a cent. No subscriptions, no API keys to manage, no human in the loop — just pay-as-you-query settlement an agent can decide on its own.
OSF pulls exclusively from documented public APIs serving public-domain or openly-licensed data. No scraping, no paywalled content, no terms-of-service grey areas.
The raw data is free — and integrating dozens of different APIs, normalizing their schemas, juggling keys and rate limits, and babysitting uptime is not. OSF sells the part that's actually hard: one canonical schema across every source, integrations abstracted away, and a provenance URL on every record. And because live sources overwrite their own history, OSF's record is a citable point-in-time snapshot of what a source said when it was read.
Dozens of endpoints, dozens of schemas, dozens of auth and rate-limit regimes to maintain. And the live source mutates: what a CVE was scored before it was re-rated, what a series read before revision — overwritten, gone.
A single canonical JSON envelope across all sources, keys and uptime abstracted away, and a provenance URL on every record pointing back to the primary source. Each record is a timestamped snapshot — the data as it read at retrieval, citable forever.
OSF is published in the official Model Context Protocol Registry and settles every payment through the Coinbase CDP Facilitator on Base — which lists it in the CDP Bazaar, the discovery layer where AI agents browse and pay for x402 services. You don't have to take our word for it: both listings are public and independently verifiable.
Agents can discover OSF through the MCP Registry by name, or through the CDP Bazaar, read its input/output schemas and pricing, and pay for a record with no prior integration with us. Discovery, payment, and delivery happen in a single x402 round trip.
Every settlement runs through the Coinbase CDP Facilitator — the same infrastructure powering the broader x402 agent economy.
An orchestrator commands a fleet of stateless collector nodes. Each runs deterministic fetch routines against documented public APIs, stamps every record with its origin, and streams it into a central warehouse — which is then served through both a paid MCP server and an x402-settled HTTP endpoint on Base mainnet.
Collectors query official endpoints — SEC, NOAA, USGS, openFDA and dozens more — using each provider's published interface. No browsers, no proxies, no captchas.
▶Each record is wrapped with its source authority, the canonical filing/index URL, the API call that produced it, and a UTC retrieval timestamp.
▶Records land in a hash-deduplicated PostgreSQL warehouse and are assigned a deterministic price by data type — no model, no guesswork.
▶A free catalog is open to all; individual records unlock on a verified USDC payment over Base, settled through the Coinbase CDP Facilitator — over MCP or HTTP.
▶Every source below is integrated, provenance-stamped, and drawn from public-domain or openly-licensed data. This is the live collection surface — growing continuously as new sources are verified and added.
OSF is designed to be consumed by software, and it's live right now. Start with a single command against the free discovery endpoint — no key, no signup — then connect your agent over MCP or settle a purchase over HTTP x402.
# Discover OSF — capabilities, pricing model, schemas. # Free, no key, no signup. Returns the full x402 manifest. curl -s https://api.osf-master-server.com/.well-known/x402
# Confirm OSF is live + cataloged on the CDP Bazaar. curl -s https://api.osf-master-server.com/x402/bazaar_health ← { "listed": true, "resource_count": 1, "ok": true }
Beyond the full catalog, OSF exposes three sharp, single-purpose x402 endpoints for the agent jobs people ask for most. Each returns structured JSON with a provenance URL, priced per call — and each is indexed on the x402scan explorer.
Resolve and verify a company or person against CMS NPI, GLEIF LEI, FDIC, and SEC EDGAR. For KYC, KYB, and counterparty due-diligence.
Screen a name against the OFAC SDN, EU, and UK OFSI sanctions lists. Returns hit or no-hit, the matched list, and an audit receipt. For AML and KYC.
Is a CVE actively exploited? Checks the CISA KEV catalog, plus its EPSS probability and CVSS severity. For vulnerability management and patch triage.
Install the OSF provider and all three tools drop straight into your agent — the agent's own wallet pays per call over x402, automatically.
pip install osf-agentkit
Add OSF to any MCP-capable agent. It exposes a free get_catalog tool and a paid get_record tool that returns an x402 payment challenge — your client pays and receives the record in the same session.
Point any x402-compatible HTTP client at a record's purchase URL. The server replies 402 Payment Required with the exact USDC amount and pay-to address; your client settles on Base and retries to receive the record.
A complete, runnable LangGraph agent that discovers a CVE over MCP, pays $0.04 in USDC over x402, and returns a triage decision with a citation to nvd.nist.gov. Copy the tool straight into your own agent.
View the code on GitHub ↗Find OSF in the MCP Registry or the CDP Bazaar, or call the free catalog to list available records, their data type, and price.
Ask for a record. The server replies 402 Payment Required with the exact USDC amount, asset, network, and pay-to address.
Your x402 client settles the micropayment in USDC on Base through the Coinbase CDP Facilitator and retries — no manual signing, no API key.
OSF returns the full record with its provenance block — the verifiable link back to the authoritative source. One round trip, done.
# 1 · discover (free) — list records + prices call get_catalog { source: "SEC_EDGAR" } → [ { record_id, data_type, price_usd, provenance_url }, … ] # 2 · request a record (MCP get_record or HTTP buy) GET /x402/buy/standard/497140 ← 402 Payment Required accepts: { scheme: "exact", network: "eip155:8453", asset: "USDC", amount: "50000", payTo: "0x051A0Ba…cAf85" } # 3 · x402 client pays + retries (automatic) GET /x402/buy/standard/497140 x-payment: "<signed settlement>" # 4 · settled on-chain → record released ← 200 OK { "status": "success", "data_type": "Federal Funding Opportunity", "source": "GRANTS_GOV", "data": { /* the verified record */ }, "provenance": { "source_url": "https://api.grants.gov/…", "retrieved_at_utc": "2026-06-09T…Z", "license": "U.S. Government Public Domain" } }
No narration, no edits. An autonomous agent discovers OSF's security data, pays $0.04 in USDC over x402 on Base mainnet, receives a CISA Known-Exploited-Vulnerability record, and gets a provenance link back to nvd.nist.gov to verify every field independently. One round trip — no account, no API key.
That transaction is a real USDC settlement on Base mainnet. The record it bought links to its authoritative U.S. government source — the citation is the product.
OSF is built in the open and shaped by the agent developers using it. These are the next things being built — named here honestly as work in progress, not shipped features.
Every paid response will carry a signed receipt — source URL, retrieval timestamp, record hash, price, payment reference, and response id — verifiable offline against a published key. Provenance you can prove, not just follow.
A payment reference will map to a replayable claim server-side, so a timed-out retry returns the same record instead of risking a second charge. A network blip should never cost an agent twice.
Surfacing the snapshot model directly: request a record as it read at a moment in time, distinct from a fresh fetch — a first-class citation primitive for agents that need to defend what they acted on.
An honest, real-time view of what's running today. OSF is live on Base mainnet, settling through the Coinbase CDP Facilitator, listed in the MCP Registry, and discoverable on the CDP Bazaar.
OSF is live today. Run the one-line discovery call, add the MCP server to your agent, or reach out for integration help or to request a data source. Independently operated and partner-friendly.
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