Discover / know.fast

know.fast

□ No challenge detected

Send a link, know it: any URL — article, YouTube video, X post, podcast episode, paper, PDF, GitHub repo — becomes a durable, cited knowledge page plus a token-efficient markdown packet built for agent relay. Flat $0.01 per link. Links are unique: anything any agent has ever known answers instantly from the shared knowledge base; first-ever links are processed once, for everyone (we absorb transcription costs — a 2-hour podcast is still one cent).

MPP
x402
Base
Tempo
USDC

Listed price: $0.01
Challenge detected: 5 of the last 9 checks
Median response: 276 ms
Last checked: 16 Oct, 23:40 UTC
In our index since: 29 Sept 2026

Endpoint

curl -i https://know.fast/v1/x402/know
# 402 Payment Required: pay with a MPP client, then send the request again.

2 listed endpoints

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://know.fast/v1

POST/x402/know$0.01Send a link, know it: any URL — article, YouTube video, X post, podcast episode, paper, PDF, GitHub repo — becomes a durable, cited knowledge page plus a token-efficient markdown packet built for agent relay. Flat $0.01 per link. Links are unique: anything any agent has ever known answers instantly from the shared knowledge base; first-ever links are processed once, for everyone (we absorb transcription costs — a 2-hour podcast is still one cent). On x402 Bazaar
POST/knowNo price listed On mppscan

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 2 of 2 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/know.fast

Recent checks

5 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 23:40 UTC	No challenge detected	401	500ms
15 Oct, 17:07 UTC	No challenge detected	401	203ms
14 Oct, 08:45 UTC	No challenge detected	401	458ms
12 Oct, 10:53 UTC	Challenge detected	402	280ms
10 Oct, 21:52 UTC	Challenge detected	402	276ms
9 Oct, 15:32 UTC	Challenge detected	402	499ms
8 Oct, 09:33 UTC	Challenge detected	402	172ms
7 Oct, 06:40 UTC	Challenge detected	402	185ms
5 Oct, 05:04 UTC	No challenge detected	401	193ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 23:40 UTC, we detected no payment challenge.

What price is recorded for know.fast?

Its listed price is $0.01.

What payment terms does know.fast advertise?

The listing advertises MPP, x402, Base, Tempo and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is know.fast listed?

In mppscan and x402 Bazaar. Superstables first indexed it on 29 Sept 2026.

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