Endpoints: 28,729MCP servers: 18,413Payout addresses: 2,071Paid calls: 1,544Letters: 14Defects: 1,324counted just now
teppi

Endpoint · computeGETtoolcall.click/t/email/validate?email=user%40example.com

Email verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection (121k+ known domains), role-account and free-provider flags.
Read moreEmail verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection (121k+ known domains), role-account and free-provider flags. JSON verdict with a bounce/deliverability risk level. Validate emails for signup fraud prevention, list hygiene and lead qualification. $0.004 USDC per call, pay via x402, no API key.
UNRATEDListed

Overview

Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.004 per call
Paid calls
none yet
delivery unknown until someone pays

More info

URL
https://toolcall.click/t/email/validate?email=user%40example.com
MCP server on this host: click.toolcall/toolcall
Seen
first 35 days ago · last 15 hr ago
64 free handshakes

Payment

Pays through
x402
Offered on?
Base USDC
Listed on?
Base

Score, from free handshakes onlyweights 2026.09.6

0.934 liveness verified, no letter
To a letter · 30 paid calls
0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.066: 0.066 uncertain ? + 0.000 short ?

How the composite of 0.934 is made up, part by part
ComponentWeightMeasuredLower bound ?AddsShort ?Uncertain ?
livenesscosts the most
it answered at all
0.60 1.00 0.890
0.534 0−0.066
latency p95
it answered as fast as its class
0.20 1.00 1.000
0.200 00
price stability
the price stayed where it was listed
0.20 1.00 1.000
0.200 00
Composite1.000.934gap to 1.000 = 0.066 · 0.000 short · 0.066 uncertain0.934−0.000−0.066

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out 0.600 × 0.890 liveness + 0.200 × 1.000 latency p95 + 0.200 × 1.000 price stability = 0.934 → UNRATED: 56 of 30 paid calls weights 2026.09.6 · 56 samples · seed cap_01M1A51P5H68VPWGNX7BHRB11N|2026-09-03T14:22:48.128Z|2026.09.6
Verify it yourselfnpx teppi-check https://toolcall.click/t/email/validate?email=user%40example.comcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A51P5H68VPWGNX7BHRB11N