# Vellum Research

> Filing intelligence for AI agents. Turns SEC filings into decisions. One paid call returns a structured brief, a change report or an investment-committee scaffold — computed from EDGAR filings, XBRL facts and filing history. USDC on Base, no API keys, no accounts.

Payment: send USDC on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to 0x3a137ae81cfd1ea48414c85db362591fd238d3cc as an EIP-3009
TransferWithAuthorization, exactly as the 402 challenge asks. A plain GET returns
HTTP 402 with a base64 PAYMENT-REQUIRED header; retry with PAYMENT-SIGNATURE.

## Endpoints

- GET https://x402-data-api.x402agent.workers.dev/sec-latest — $0.01 USDC — Latest SEC filing lookup by ticker or CIK. Returns form, filing date, accession number and official EDGAR URL for fast agent workflows.
- GET https://x402-data-api.x402agent.workers.dev/sec-change-signal — $0.01 USDC — Binary SEC change signal since a date: changed true or false, filing count, form types and the latest official EDGAR filing.
- GET https://x402-data-api.x402agent.workers.dev/sec-risk-flags — $0.02 USDC — Deterministic SEC risk flags: late filing notices, amendments, recent 8-K activity, negative income and liabilities above assets.
- GET https://x402-data-api.x402agent.workers.dev/sec-research — $0.03 USDC — SEC filing lookup and XBRL facts by ticker or CIK, with form filters, direct EDGAR links and machine-readable JSON.
- GET https://x402-data-api.x402agent.workers.dev/filing-delta — $0.05 USDC — SEC filing delta since a date: new filings, form counts, updated financial facts and change signals for monitoring agents.
- GET https://x402-data-api.x402agent.workers.dev/filing-brief — $0.15 USDC — Cited SEC filing brief with company profile, filing activity, latest financials, period changes, signals and EDGAR source URLs.
- GET https://x402-data-api.x402agent.workers.dev/ic-memo — $0.75 USDC — Investment committee memo from SEC filings: financial trajectory, margins, leverage, ranked risk flags, positives, open questions and sources.

## Free

- GET https://x402-data-api.x402agent.workers.dev/market-data — free — Free utility: spot prices, market caps and 24h volume for crypto assets
- GET https://x402-data-api.x402agent.workers.dev/onchain — free — Free utility: balances, nonces, ERC-20 metadata and transaction receipts on Base or Ethereum

- GET https://x402-data-api.x402agent.workers.dev/services — full machine-readable catalogue
- GET https://x402-data-api.x402agent.workers.dev/health — status
- GET https://x402-data-api.x402agent.workers.dev/.well-known/x402.json — payment manifest

## Notes

- Output is JSON.
- The buyer pays gas-free: the facilitator submits settlement.
- Data is fetched before settlement, so a failed lookup is never charged.