<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>AgentStack (agentstack.tech) · agentstack · changes | VerifyMCP</title><description>Recorded changes to this MCP component: tools, parameters, capabilities, advisories and trust-score checks. Security-relevant changes by default; append ?materiality=all for everything.</description><link>https://verifymcp.io</link><atom:link href="https://verifymcp.io/servers/agentstacktech-agentstack/agentstack.xml" rel="self" type="application/rss+xml"/><item><title>[SECURITY] agentstack: Authorization (unverified → partial)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa0-73b8-9cc6-993a44ff1ec5</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa0-73b8-9cc6-993a44ff1ec5</guid><description>Authorization (unverified → partial). Compared against 2026-11-02.</description><pubDate>Tue, 03 Nov 2026 07:44:24 GMT</pubDate><category>security</category><category>improvement</category><category>check.reverified</category></item><item><title>[SECURITY] agentstack: HSTS header (fail → pass)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa1-740e-b538-d1af3b86c711</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa1-740e-b538-d1af3b86c711</guid><description>HSTS header (fail → pass). Compared against 2026-11-02.</description><pubDate>Tue, 03 Nov 2026 07:44:24 GMT</pubDate><category>security</category><category>improvement</category><category>check.verdict</category></item><item><title>[SECURITY] agentstack: Transport (fail → pass)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa1-79fb-8bf9-19c4b3bdc1c9</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa1-79fb-8bf9-19c4b3bdc1c9</guid><description>Transport (fail → pass). Compared against 2026-11-02.</description><pubDate>Tue, 03 Nov 2026 07:44:24 GMT</pubDate><category>security</category><category>improvement</category><category>check.verdict</category></item><item><title>[SECURITY] agentstack: Injection markers (unverified → pass)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa2-7863-b250-44ec7e3bbd9f</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1a05d-cfa2-7863-b250-44ec7e3bbd9f</guid><description>Injection markers (unverified → pass). Compared against 2026-11-02.</description><pubDate>Tue, 03 Nov 2026 07:44:24 GMT</pubDate><category>security</category><category>improvement</category><category>check.reverified</category></item><item><title>[SECURITY] agentstack: Stability (0.83 → unverified)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6033-7036-9b70-b8cb3a7d2b93</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6033-7036-9b70-b8cb3a7d2b93</guid><description>Stability (0.83 → unverified). Compared against 2026-11-01.</description><pubDate>Mon, 02 Nov 2026 07:38:52 GMT</pubDate><category>security</category><category>regression</category><category>check.unverifiable</category></item><item><title>[SECURITY] agentstack: Transport (pass → fail)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6034-7302-b9eb-a2d2ad0abc5c</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6034-7302-b9eb-a2d2ad0abc5c</guid><description>Transport (pass → fail). Compared against 2026-11-01.</description><pubDate>Mon, 02 Nov 2026 07:38:52 GMT</pubDate><category>security</category><category>regression</category><category>check.verdict</category></item><item><title>[SECURITY] agentstack: Authorization (partial → unverified)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6034-7be9-82c9-5d3c868592ca</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6034-7be9-82c9-5d3c868592ca</guid><description>Authorization (partial → unverified). Compared against 2026-11-01.</description><pubDate>Mon, 02 Nov 2026 07:38:52 GMT</pubDate><category>security</category><category>regression</category><category>check.unverifiable</category></item><item><title>[SECURITY] agentstack: Tool safety (pass → unverified)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6035-73df-95a9-42b6b4bdaf9c</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6035-73df-95a9-42b6b4bdaf9c</guid><description>Tool safety (pass → unverified). Compared against 2026-11-01.</description><pubDate>Mon, 02 Nov 2026 07:38:52 GMT</pubDate><category>security</category><category>regression</category><category>check.unverifiable</category></item><item><title>[SECURITY] agentstack: HSTS header (pass → fail)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6035-7ca6-ac42-01faa4a5c248</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6035-7ca6-ac42-01faa4a5c248</guid><description>HSTS header (pass → fail). Compared against 2026-11-01.</description><pubDate>Mon, 02 Nov 2026 07:38:52 GMT</pubDate><category>security</category><category>regression</category><category>check.verdict</category></item><item><title>[SECURITY] agentstack: Endpoint reachability (reachable → unreachable)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6037-7a7c-be6e-b2a4a5f75ced</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a19b32-6037-7a7c-be6e-b2a4a5f75ced</guid><description>Endpoint reachability (reachable → unreachable). Compared against 2026-11-01.</description><pubDate>Mon, 02 Nov 2026 07:38:52 GMT</pubDate><category>security</category><category>regression</category><category>capture.status_changed</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” rewrote its description, which is the text the model reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a16cd6-0e5b-7a19-8c5e-6b4f7dbd279e</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a16cd6-0e5b-7a19-8c5e-6b4f7dbd279e</guid><description>Tool “agentstack.execute” rewrote its description, which is the text the model reads. Compared against 2026-10-23.</description><pubDate>Sat, 24 Oct 2026 07:35:30 GMT</pubDate><category>security</category><category>neutral</category><category>tool.description_changed</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” rewrote its description, which is the text the model reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1628a-24a8-7e2e-8954-99f6448a078b</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1628a-24a8-7e2e-8954-99f6448a078b</guid><description>Tool “agentstack.execute” rewrote its description, which is the text the model reads. Compared against 2026-10-21.</description><pubDate>Thu, 22 Oct 2026 07:36:22 GMT</pubDate><category>security</category><category>neutral</category><category>tool.description_changed</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” rewrote its description, which is the text the model reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1530f-eca5-7327-91e6-be25e249cdac</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a1530f-eca5-7327-91e6-be25e249cdac</guid><description>Tool “agentstack.execute” rewrote its description, which is the text the model reads. Compared against 2026-10-18.</description><pubDate>Mon, 19 Oct 2026 07:28:34 GMT</pubDate><category>security</category><category>neutral</category><category>tool.description_changed</category></item><item><title>[SECURITY] agentstack: The server rewrote its instructions, which are the text every model session reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a14de9-4ccd-7e51-a976-211bd499bc71</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a14de9-4ccd-7e51-a976-211bd499bc71</guid><description>The server rewrote its instructions, which are the text every model session reads. Compared against 2026-10-17.</description><pubDate>Sun, 18 Oct 2026 07:28:14 GMT</pubDate><category>security</category><category>neutral</category><category>server.instructions_changed</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” rewrote its description, which is the text the model reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a148c2-e8c0-705d-b50a-88d00ad1382c</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a148c2-e8c0-705d-b50a-88d00ad1382c</guid><description>Tool “agentstack.execute” rewrote its description, which is the text the model reads. Compared against 2026-10-16.</description><pubDate>Sat, 17 Oct 2026 07:28:15 GMT</pubDate><category>security</category><category>neutral</category><category>tool.description_changed</category></item><item><title>[SECURITY] agentstack: Stability (0.23 → fail)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1ac8-7b3b-8f98-1c9dbe71d6e6</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1ac8-7b3b-8f98-1c9dbe71d6e6</guid><description>Stability (0.23 → fail). Compared against 2026-10-14.</description><pubDate>Thu, 15 Oct 2026 07:32:30 GMT</pubDate><category>security</category><category>regression</category><category>check.verdict</category></item><item><title>[SECURITY] agentstack: Authorization (fail → partial)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b19-7c20-aa36-1038bf4a5cb2</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b19-7c20-aa36-1038bf4a5cb2</guid><description>Authorization (fail → partial). Compared against 2026-10-14.</description><pubDate>Thu, 15 Oct 2026 07:32:30 GMT</pubDate><category>security</category><category>improvement</category><category>check.verdict</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” no longer declares itself destructive</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b2c-72c2-a229-adee4c21a64d</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b2c-72c2-a229-adee4c21a64d</guid><description>Tool “agentstack.execute” no longer declares itself destructive. Compared against 2026-10-14.</description><pubDate>Thu, 15 Oct 2026 07:32:30 GMT</pubDate><category>security</category><category>neutral</category><category>tool.destructive_cleared</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” rewrote its description, which is the text the model reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b2c-77ef-b2a8-2102f85ca325</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b2c-77ef-b2a8-2102f85ca325</guid><description>Tool “agentstack.execute” rewrote its description, which is the text the model reads. Compared against 2026-10-14.</description><pubDate>Thu, 15 Oct 2026 07:32:30 GMT</pubDate><category>security</category><category>neutral</category><category>tool.description_changed</category></item><item><title>[SECURITY] agentstack: A breaking change shipped without a version bump (still 0.4.22)</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b2d-7e9a-969d-b66fe8194d2b</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13e7a-1b2d-7e9a-969d-b66fe8194d2b</guid><description>A breaking change shipped without a version bump (still 0.4.22). Compared against 2026-10-14.</description><pubDate>Thu, 15 Oct 2026 07:32:30 GMT</pubDate><category>security</category><category>regression</category><category>server.breaking_without_version_bump</category></item><item><title>[SECURITY] agentstack: The server rewrote its instructions, which are the text every model session reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13958-54de-76ea-b310-e863bd5a5302</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13958-54de-76ea-b310-e863bd5a5302</guid><description>The server rewrote its instructions, which are the text every model session reads. Compared against 2026-10-13.</description><pubDate>Wed, 14 Oct 2026 07:37:32 GMT</pubDate><category>security</category><category>neutral</category><category>server.instructions_changed</category></item><item><title>[SECURITY] agentstack: The server rewrote its instructions, which are the text every model session reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13426-f7b4-7d38-a8e5-df687a8ba5d7</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a13426-f7b4-7d38-a8e5-df687a8ba5d7</guid><description>The server rewrote its instructions, which are the text every model session reads. Compared against 2026-10-12.</description><pubDate>Tue, 13 Oct 2026 07:25:31 GMT</pubDate><category>security</category><category>neutral</category><category>server.instructions_changed</category></item><item><title>[SECURITY] agentstack: Tool “agentstack.execute” rewrote its description, which is the text the model reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a12e20-4c49-7a03-bc84-68e81352e5db</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a12e20-4c49-7a03-bc84-68e81352e5db</guid><description>Tool “agentstack.execute” rewrote its description, which is the text the model reads. Compared against 2026-10-10.</description><pubDate>Mon, 12 Oct 2026 03:20:30 GMT</pubDate><category>security</category><category>neutral</category><category>tool.description_changed</category></item><item><title>[SECURITY] agentstack: The server rewrote its instructions, which are the text every model session reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a12e20-4cb5-796d-9790-4ea6f55f1a40</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a12e20-4cb5-796d-9790-4ea6f55f1a40</guid><description>The server rewrote its instructions, which are the text every model session reads. Compared against 2026-10-10.</description><pubDate>Mon, 12 Oct 2026 03:20:30 GMT</pubDate><category>security</category><category>neutral</category><category>server.instructions_changed</category></item><item><title>[SECURITY] agentstack: The server rewrote its instructions, which are the text every model session reads</title><link>https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a12629-0a9d-7f27-9c7f-161390cfe40f</link><guid isPermaLink="true">https://verifymcp.io/servers/agentstacktech-agentstack/agentstack#chg-chg_01a12629-0a9d-7f27-9c7f-161390cfe40f</guid><description>The server rewrote its instructions, which are the text every model session reads. Compared against 2026-10-09.</description><pubDate>Sat, 10 Oct 2026 14:13:06 GMT</pubDate><category>security</category><category>neutral</category><category>server.instructions_changed</category></item></channel></rss>