SEC filing changes with the evidence attached.
FilingSift combines evidence-backed filing comparisons, a stable REST API, an authenticated customer workspace, usage and API-key controls, and Stripe-hosted subscription billing. These capabilities are available today within the current public coverage boundary; planned capabilities are labeled separately below.
Evidence-backed filing intelligence
FilingSift compares eligible SEC filings and returns structured financing and liquidity changes rather than a document-only feed. Every production filing-derived fact retains the accession, filing URL, exact evidence text, and verification state. Comparable records retain evidence from both periods. Missing or uncertain data remains unavailable or explicitly refused; it is never silently converted to zero.
The public explorer currently covers Apple (AAPL), two comparable 10-Q filings, and four machine-checked debt or liquidity changes. No public result is qualified-human-verified, no severity is assigned, and the benchmark remains at zero of 100 qualified-reviewed cases.
Developer delivery
| Capability | Status | What is available |
|---|---|---|
| REST API v1 | Live | Company, filing, facility, covenant, comparison, event, coverage, onboarding, CSV, account, usage, and API-key resources. |
| OpenAPI and Postman | Live | Downloadable OpenAPI 3.1 and Postman Collection 2.1 contracts with a blank secret variable. |
| Examples and notebook | Live | cURL, Python, and Node.js tabs plus a credential-free Jupyter notebook. |
| Source SDKs | Live | Small dependency-free Python and typed Node.js clients; downloadable but not published to package registries. |
| Source contract | Live | Accessions, SEC URLs, exact evidence, hashes, verification, uncertainty, and refusals. |
| Public caching | Live | Strong ETags for public GET responses; authenticated responses remain private. |
Start with the API documentation or inspect the live AAPL comparison.
Customer workspace
Email-and-password accounts include email verification and resend, sign in and sign out, password reset, multi-browser sessions, plan-capped members and roles, an account overview, monthly usage, scoped API-key creation and rotation, billing controls, and account settings. The monitoring page accepts SEC-directory tickers, requests bounded onboarding and backfill, shows explicit queue and indexing states, and exports evidence-rich CSV. Account settings support email and password changes plus account deletion. The platform owner has a server-authorized administration view for customer accounts and plan state.
Subscriptions and billing
Builder, Professional, and Team use authenticated Stripe-hosted Checkout. Returning customers can open the Stripe Customer Portal, and subscription changes arrive through signed billing webhooks. Stripe Tax is not active, and no controlled live charge has been completed. The free evaluation plan starts without a card. Review current prices and included limits on the pricing section.
What is planned, not available
Market-wide automatic coverage, filing and financing-change alerts, outbound product webhooks, MCP access, collaborative review queues, exports beyond the current bounded CSV, and a cited AI research assistant are roadmap items—not current product features. Qualified accuracy or reliability claims also remain blocked until the 100-filing benchmark receives qualified human review.
Evaluate the current product
Use the live comparison explorer to inspect evidence, read the methodology and refusal rules, check the benchmark status, or create an account to inspect the customer workspace. FilingSift is research infrastructure, not investment or legal advice.
Content snapshot: . Current API data may be newer.