io.github.cyanheads/pubchem-mcp-server · pubchem · changes | VerifyMCPRecorded 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.io[SECURITY] pubchem: Stability (0.97 → pass)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_01a0852f-3261-71bb-9af3-96e4e20ba61bhttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_01a0852f-3261-71bb-9af3-96e4e20ba61bStability (0.97 → pass). Compared against 2026-09-08.Wed, 09 Sep 2026 08:00:57 GMTsecurityneutralcheck.verdict[SECURITY] pubchem: Stability (fail → pass)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_01a0423c-e3eb-7bfd-8534-998550d595a7https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_01a0423c-e3eb-7bfd-8534-998550d595a7Stability (fail → pass). Compared against 2026-08-26.Thu, 27 Aug 2026 08:01:21 GMTsecurityimprovementcheck.verdict[SECURITY] pubchem: Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d626-77b8-9f14-5f4933bd02d5https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d626-77b8-9f14-5f4933bd02d5Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.). Compared against 2026-08-09.Mon, 10 Aug 2026 08:05:47 GMTsecurityneutralcheck.reason[SECURITY] pubchem: Transport (fail → pass)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d626-7310-b8b4-8f841c192b3fhttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d626-7310-b8b4-8f841c192b3fTransport (fail → pass). Compared against 2026-08-09.Mon, 10 Aug 2026 08:05:47 GMTsecurityimprovementcheck.verdict[SECURITY] pubchem: HSTS header (fail → pass)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d625-7cb1-9f8b-85331fab3f8chttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d625-7cb1-9f8b-85331fab3f8cHSTS header (fail → pass). Compared against 2026-08-09.Mon, 10 Aug 2026 08:05:47 GMTsecurityimprovementcheck.verdict[SECURITY] pubchem: Stability (unverified → fail)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d624-7c9f-8c94-bb0bb60f6f45https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019feab4-d624-7c9f-8c94-bb0bb60f6f45Stability (unverified → fail). Compared against 2026-08-09.Mon, 10 Aug 2026 08:05:47 GMTsecurityregressioncheck.reverified[SECURITY] pubchem: Endpoint reachability (reachable → not serving MCP)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f510-7663-8e5f-88405b55a3afhttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f510-7663-8e5f-88405b55a3afEndpoint reachability (reachable → not serving MCP). Compared against 2026-08-07.Sat, 08 Aug 2026 08:05:37 GMTsecurityregressioncapture.status_changed[SECURITY] pubchem: HSTS header (pass → fail)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50e-787b-8f50-db3bf4540599https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50e-787b-8f50-db3bf4540599HSTS header (pass → fail). Compared against 2026-08-07.Sat, 08 Aug 2026 08:05:37 GMTsecurityregressioncheck.verdict[SECURITY] pubchem: Authorization (Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes.)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50e-7d34-bd7e-bb1a9a84975ahttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50e-7d34-bd7e-bb1a9a84975aAuthorization (Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes.). Compared against 2026-08-07.Sat, 08 Aug 2026 08:05:37 GMTsecurityneutralcheck.reason[SECURITY] pubchem: Transport (pass → fail)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50e-71b3-bbfe-d095600459c5https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50e-71b3-bbfe-d095600459c5Transport (pass → fail). Compared against 2026-08-07.Sat, 08 Aug 2026 08:05:37 GMTsecurityregressioncheck.verdict[SECURITY] pubchem: Stability (fail → unverified)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50d-7188-b40f-c68154425c47https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fe067-f50d-7188-b40f-c68154425c47Stability (fail → unverified). Compared against 2026-08-07.Sat, 08 Aug 2026 08:05:37 GMTsecurityregressioncheck.unverifiable[SECURITY] pubchem: Stability (0.03 → fail)https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa9af-4db9-77d9-be97-57865aecdfd8https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa9af-4db9-77d9-be97-57865aecdfd8Stability (0.03 → fail). Compared against 2026-07-27.Tue, 28 Jul 2026 17:04:26 GMTsecurityregressioncheck.verdict[SECURITY] pubchem: Tool “pubchem_get_compound_interactions” rewrote its description, which is the text the model readshttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa9af-4dbb-73bb-90a8-7f7dae54ba6ahttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa9af-4dbb-73bb-90a8-7f7dae54ba6aTool “pubchem_get_compound_interactions” rewrote its description, which is the text the model reads. Compared against 2026-07-28.Tue, 28 Jul 2026 17:04:26 GMTsecurityneutraltool.description_changed[SECURITY] pubchem: Tool “pubchem_search_compounds” rewrote its description, which is the text the model readshttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa9af-4dbc-7bc8-9805-4615a92bf42dhttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa9af-4dbc-7bc8-9805-4615a92bf42dTool “pubchem_search_compounds” rewrote its description, which is the text the model reads. Compared against 2026-07-28.Tue, 28 Jul 2026 17:04:26 GMTsecurityneutraltool.description_changed[SECURITY] pubchem: Tool “pubchem_get_compound_3d_structure” rewrote its description, which is the text the model readshttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa916-55b9-79c6-93e6-edc2b0e7aa16https://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa916-55b9-79c6-93e6-edc2b0e7aa16Tool “pubchem_get_compound_3d_structure” rewrote its description, which is the text the model reads. Compared against 2026-07-28.Tue, 28 Jul 2026 14:17:21 GMTsecurityneutraltool.description_changed[SECURITY] pubchem: Tool “pubchem_get_compound_details” rewrote its description, which is the text the model readshttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa916-55ba-761e-855c-8fa36e62da9ahttps://verifymcp.io/servers/cyanheads-pubchem-mcp-server/pubchem#chg-chg_019fa916-55ba-761e-855c-8fa36e62da9aTool “pubchem_get_compound_details” rewrote its description, which is the text the model reads. Compared against 2026-07-28.Tue, 28 Jul 2026 14:17:21 GMTsecurityneutraltool.description_changed