402Briefbar
Market

7 packets. Cited. Priced. Ready for a GET.

Discovery is free. The catalog, llms.txt, and well-known document do not charge. The briefs do. Prices are in USDC terms; this deployment settles a demo facilitator so you can inspect the goods.

SEC entity packet

$0.02

Company identifiers and recent filings from EDGAR.

/api/v1/briefs/example-sec-filing?cik=…

Buy402

FX print

$0.001

One pair, one ECB reference rate, no chart.

/api/v1/briefs/fx?q=…

Buy402

Gas oracle

$0.002

One chain, current fee picture, no history dump.

/api/v1/briefs/gas-oracle?q=…

Buy402

npm package card

$0.002

One package, bounded metadata, no packument dump.

/api/v1/briefs/npm-package?q=…

Buy402

Protocol brief

$0.01

Original Briefbar notes on x402, priced as JSON.

/api/v1/briefs/protocol?topic=…

Buy402

PyPI package card

$0.002

One package, bounded metadata, no full JSON dump.

/api/v1/briefs/pypi-package?q=…

Buy402

RFC card

$0.005

One RFC, bounded metadata, not the full document.

/api/v1/briefs/rfc?q=…

Buy402
Sources
  • 01Entity briefs transform Wikipedia summaries (CC BY-SA) into a bounded card. We sell the packet, not the encyclopedia.
  • 02News briefs read Hacker News via Algolia — a public firehose with a developer-community bias, labeled as such.
  • 03Weather briefs use Open-Meteo (CC BY 4.0), attributed in the JSON.
  • 04Protocol briefs are original Briefbar writing. That is the SKU we could sell even if every public API vanished.