Discover / api.mailsecuritytools.com

Mail Security Tools

■ Challenge detected

Mail Security Tools API: Graded email security score (0-100, A-F) for a domain. Scores SPF (30), DMARC (40), DKIM (25) and MX (5) from live DNS, with findings and the top 3 fixes. Bad input 400, unknown domain 404, never charged.

x402
Base
USDC

Listed price: $0.01
Challenge detected: 3 of the last 3 checks
Median response: 352 ms
Last checked: 17 Oct, 07:50 UTC
In our index since: 14 Oct 2026

Endpoint

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

3 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://api.mailsecuritytools.com/v1

GET/bulk-score$0.5Mail Security Tools API: Bulk email security score: up to 100 domains in one call. Scores up to 100 domains (comma/space separated) for SPF, DMARC, DKIM and MX from live DNS: per-domain score, grade and issues plus a summary (grade counts, missing DMARC/SPF, worst 10). Built for MSPs and agents checking a whole client or vendor list. Bad input 400 and widespread DNS failure 502, never charged.
GET/score$0.01Mail Security Tools API: Graded email security score (0-100, A-F) for a domain. Scores SPF (30), DMARC (40), DKIM (25) and MX (5) from live DNS, with findings and the top 3 fixes. Bad input 400, unknown domain 404, never charged.
POST/watch$0.3Mail Security Tools API: Prepaid email setup watch: up to 25 domains for 30 days, webhook on change. Pay once, then each domain's SPF, DMARC, DKIM (common selectors), MX and score are re-checked about once a day for 30 days. When something changes or breaks you get an HMAC-signed JSON POST at your https webhook_url (event watch.changed, kind changed|broke, before/after). A watch.created POST is sent right away. Webhook only, no email. Free status at GET /v1/watch/{watch_id}. Bad input 400, never

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

Showing 3 of 3 listed endpoints.

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

Recent checks

14 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.17 Oct 2026

All 3 checks

When (UTC)	Result	HTTP	Response
17 Oct, 07:50 UTC	Challenge detected	402	319ms
15 Oct, 23:42 UTC	Challenge detected	402	352ms
14 Oct, 17:17 UTC	Challenge detected	402	372ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 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 Mail Security Tools?

Its listed price is $0.01.

What payment terms does Mail Security Tools 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 Mail Security Tools listed?

In x402 Bazaar. Superstables first indexed it on 14 Oct 2026.

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