Discover / spreadsheet.openverbs.com

Spreadsheet References

■ Challenge detected

Parse an A1-style cell reference (e.g. "B3" or "$AA$100") into 1-based row and column numbers, plus the column letters and whether each part is absolute.

x402
Base
USDC

Listed price: $0.004
Challenge detected: 9 of the last 9 checks
Median response: 181 ms
Last checked: 16 Oct, 13:59 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://spreadsheet.openverbs.com/v1/a1-to-rc
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

4 listed endpoints · on x402 Bazaar

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

Base URLhttps://spreadsheet.openverbs.com/v1

POST/column$0.004Convert between a spreadsheet column letter and its 1-based index in either direction. Provide exactly one of `letter` (e.g. "AA") or `number` (e.g. 27); the response always contains both.
POST/range$0.004Parse an A1 range like "A1:C10" into its start and end cells (normalized so start is the top-left) and its extent — row count, column count and total cell count.
POST/a1-to-rc$0.004Parse an A1-style cell reference (e.g. "B3" or "$AA$100") into 1-based row and column numbers, plus the column letters and whether each part is absolute.
POST/rc-to-a1$0.004Build an A1-style cell reference from 1-based row and column numbers, optionally marking the row and/or column absolute ($).

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

Showing 4 of 4 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/spreadsheet.openverbs.com

Recent checks

30 Sept 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, 13:59 UTC	Challenge detected	402	177ms
15 Oct, 04:47 UTC	Challenge detected	402	160ms
13 Oct, 20:45 UTC	Challenge detected	402	288ms
11 Oct, 12:57 UTC	Challenge detected	402	177ms
10 Oct, 00:46 UTC	Challenge detected	402	184ms
8 Oct, 21:32 UTC	Challenge detected	402	232ms
7 Oct, 15:42 UTC	Challenge detected	402	189ms
6 Oct, 15:34 UTC	Challenge detected	402	162ms
30 Sept, 05:03 UTC	Challenge detected	402	181ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 13:59 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Spreadsheet References?

Its listed price is $0.004.

What payment terms does Spreadsheet References advertise?

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

Where is Spreadsheet References listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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