Recorded changes to this MCP component: tools, parameters, capabilities, advisories and trust-score checks. Security-relevant changes by default; append ?materiality=all for everything.https://verifymcp.iohttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a099d1-0401-7f14-946c-11b35aaacf8ehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a099d1-0401-7f14-946c-11b35aaacf8eStability (0.97 → pass). Compared against 2026-09-12.Sun, 13 Sep 2026 08:10:06 GMTsecurityneutralcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a08a5d-dcba-73ba-a541-4c068ae0f79fhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a08a5d-dcba-73ba-a541-4c068ae0f79fAuthorization (fail → pass). Compared against 2026-09-09.Thu, 10 Sep 2026 08:10:01 GMTsecurityimprovementcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a0853e-be1c-75ce-be25-5c14d764749chttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a0853e-be1c-75ce-be25-5c14d764749cAuthorization (pass → fail). Compared against 2026-09-08.Wed, 09 Sep 2026 08:17:56 GMTsecurityregressioncheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a05c0a-0a55-7353-b2a7-df5c8d448186https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a05c0a-0a55-7353-b2a7-df5c8d448186Stability (0.97 → pass). Compared against 2026-08-31.Tue, 01 Sep 2026 08:15:56 GMTsecurityneutralcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a051bc-60f7-7c0b-a1e3-6dc4d0df9e3chttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a051bc-60f7-7c0b-a1e3-6dc4d0df9e3cAuthorization (fail → pass). Compared against 2026-08-29.Sun, 30 Aug 2026 08:14:55 GMTsecurityimprovementcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a04c96-c4d7-786c-9c16-18a6b3b9da9bhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a04c96-c4d7-786c-9c16-18a6b3b9da9bAuthorization (pass → fail). Compared against 2026-08-28.Sat, 29 Aug 2026 08:15:44 GMTsecurityregressioncheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a01917-13e2-741e-93c1-d57dfc13d1dchttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a01917-13e2-741e-93c1-d57dfc13d1dcAuthorization (fail → pass). Compared against 2026-08-18.Wed, 19 Aug 2026 08:15:37 GMTsecurityimprovementcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a013f0-4a2a-7646-9959-391aea7e3156https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a013f0-4a2a-7646-9959-391aea7e3156Authorization (pass → fail). Compared against 2026-08-17.Tue, 18 Aug 2026 08:15:09 GMTsecurityregressioncheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a00eca-380d-72a4-8bb7-a4f7c4f430cehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a00eca-380d-72a4-8bb7-a4f7c4f430ceAuthorization (fail → pass). Compared against 2026-08-16.Mon, 17 Aug 2026 08:15:28 GMTsecurityimprovementcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a009a3-8c38-7244-91d0-e2617938625chttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_01a009a3-8c38-7244-91d0-e2617938625cAuthorization (pass → fail). Compared against 2026-08-15.Sun, 16 Aug 2026 08:15:08 GMTsecurityregressioncheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fff56-8557-7959-8f55-47d9cfa6107bhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fff56-8557-7959-8f55-47d9cfa6107bTransport (unverified → pass). Compared against 2026-08-13.Fri, 14 Aug 2026 08:14:48 GMTsecurityimprovementcheck.reverifiedhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fff56-8558-76f7-a93f-3d5cfdfb933ahttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fff56-8558-76f7-a93f-3d5cfdfb933aAuthorization (unverified → pass). Compared against 2026-08-13.Fri, 14 Aug 2026 08:14:48 GMTsecurityimprovementcheck.reverifiedhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ffa30-106a-7c71-ac57-13976cfac40bhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ffa30-106a-7c71-ac57-13976cfac40bTransport (fail → unverified). Compared against 2026-08-12.Thu, 13 Aug 2026 08:14:41 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8912-7aa0-afcc-5a688a6bed7bhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8912-7aa0-afcc-5a688a6bed7bAuthorization (pass → unverified). Compared against 2026-08-11.Wed, 12 Aug 2026 08:14:30 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8913-7d48-a49b-012d8156f3aahttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8913-7d48-a49b-012d8156f3aaTransport (pass → fail). Compared against 2026-08-11.Wed, 12 Aug 2026 08:14:30 GMTsecurityregressioncheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8914-7606-bf2d-f3554da53227https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8914-7606-bf2d-f3554da53227Stability (0.50 → unverified). Compared against 2026-08-11.Wed, 12 Aug 2026 08:14:30 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8916-73d7-98bd-2d52b43ec2a3https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019ff509-8916-73d7-98bd-2d52b43ec2a3Endpoint reachability (reachable → not serving MCP). Compared against 2026-08-11.Wed, 12 Aug 2026 08:14:30 GMTsecurityregressioncapture.status_changedhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fc488-5244-7c0a-aade-41fd9b0f13f7https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fc488-5244-7c0a-aade-41fd9b0f13f7Authorization (unverified → pass). Compared against 2026-08-01.Sun, 02 Aug 2026 22:11:36 GMTsecurityimprovementcheck.reverifiedhttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fc488-5245-7e15-afbe-1de9dbc25701https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fc488-5245-7e15-afbe-1de9dbc25701Transport (fail → pass). Compared against 2026-08-01.Sun, 02 Aug 2026 22:11:36 GMTsecurityimprovementcheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7233-7364-a603-9934b8d08a07https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7233-7364-a603-9934b8d08a07Stability (0.13 → unverified). Compared against 2026-07-31.Sat, 01 Aug 2026 08:11:05 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7233-7e48-bd6e-6e1a807a2455https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7233-7e48-bd6e-6e1a807a2455Authorization (pass → unverified). Compared against 2026-07-31.Sat, 01 Aug 2026 08:11:05 GMTsecurityregressioncheck.unverifiablehttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7234-74e7-84ba-0e2b75adba47https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7234-74e7-84ba-0e2b75adba47Transport (pass → fail). Compared against 2026-07-31.Sat, 01 Aug 2026 08:11:05 GMTsecurityregressioncheck.verdicthttps://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7235-75ac-b905-de136aa87062https://verifymcp.io/servers/io-usefulapi-customerio/customerio#chg-chg_019fbc60-7235-75ac-b905-de136aa87062Endpoint reachability (reachable → not serving MCP). Compared against 2026-07-31.Sat, 01 Aug 2026 08:11:05 GMTsecurityregressioncapture.status_changed