Discover / api.postagent.sh

api.postagent.sh

■ Challenge detected

Print and mail physical US letters (PDF, HTML, Markdown, DOCX, or image) and postcards via USPS, paid in USDC — with certified/registered proof options and standalone address verification at POST /v1/verify. Integration flow: POST /v1/documents to upload, POST /v1/quotes to lock a fixed USDC price for a recipient, then pay the returned per-quote x402 URL to create and mail the piece. Price is fixed per quote.

x402
Base
USDC

Listed price: $1.24
Challenge detected: 1 of the last check
Median response: 1098 ms
Last checked: 6 Oct, 09:33 UTC
In our index since: 6 Oct 2026

Endpoint

curl -i https://api.postagent.sh/v1/print
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

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

Recent checks

6 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.6 Oct 2026

All 1 checks

When (UTC)	Result	HTTP	Response
6 Oct, 09:33 UTC	Challenge detected	402	1098ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 6 Oct, 09:33 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 api.postagent.sh?

Its listed price is $1.24.

What payment terms does api.postagent.sh 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 api.postagent.sh listed?

In x402 Bazaar. Superstables first indexed it on 6 Oct 2026.

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