What changed in the filing, as one JSON call.

Per-call JSON cards on what changed in SEC filings, central-bank decisions and US macro/CPI data. Each card is cited to its official source. Pay per call in USDC on Base via x402. Every card type has a free sample (the central-bank sample is the previous meeting's card).

Try it free

Start with a free call: /sample/AMD (SEC filing), /sample/policy/BOE (central bank), /sample/macro/CPI (US macro). The paid card returns every change, each with its source line. The coverage list is at /catalog.

Prices (per call, USDC on Base)

Card	Route	Price
SEC filing change	`/delta/:ticker`	$0.02
Central-bank decision	`/policy/:id`	$0.02
US macro (NFP, GDP, CPI)	`/macro/:id`, `/cpi/US`	$0.01
SEMIS bundle (9 cards)	`/bundle/SEMIS`	$0.12 (vs $0.18 individually, 33% off)
CENTRALBANKS bundle (7 cards)	`/bundle/CENTRALBANKS`	$0.08 (vs $0.14 individually, 43% off)

An unpaid request to a paid route returns the price as an HTTP 402 answer (x402) instead of the card.

Where each card comes from

SEC filings: each change is cited to the filing it comes from (see source_url).
Central banks: each card links to the central bank's own published decision page (source_url). Not affiliated with or endorsed by the Bank of England.
US macro and CPI: each figure is cited to the official BLS or BEA release.

Freshness

Every card shows its as-of date and the next scheduled update, marked confirmed or estimated (/catalog: as_of, next_update). The content_hash lets you verify a card has not changed.

What this is not

Summaries of what changed in published documents. Not investment advice, not a trading signal.

FilingDelta. Free pages: /catalog, /status, /llms.txt.