[{"slug":"ZV-2026-1922","server_name":"mcp.memestack.ai","severity":"breaking","title":"mcp.memestack.ai: Tool get_mutation_group was renamed to get_meme_variants.","summary":"[breaking] Tool get_mutation_group was renamed to get_meme_variants. [risky] Description of get_mutation_group changed (32% word delta). [safe] Description of search_charts changed (2% word delta).","changes":[{"kind":"tool_renamed","tool":"get_mutation_group","after":"get_meme_variants","before":"get_mutation_group","detail":"Tool `get_mutation_group` was renamed to `get_meme_variants`.","severity":"breaking"},{"kind":"description_changed","tool":"get_mutation_group","after":"Get every variant of a meme tracked on MemeStack, given the ID of any one of them. Returns the dominant (most popular) version plus each variant, with citation blocks for each. Use this to research how a meme has evolved or to find variants of a known image.","before":"Get all variants of a meme template tracked on MemeStack. Returns the dominant image plus every variant in the same mutation group, with citation blocks for each. Use this to research how a meme has evolved or to find variants of a known image.","detail":"Description of `get_mutation_group` changed (32% word delta).","severity":"risky","descriptionDelta":0.31818181818181823},{"kind":"description_changed","tool":"search_charts","after":"Search charts, maps and infographics that carry stored metadata of two kinds. Charts from Our World in Data and three statistical publishers (provenance 'authoritative') carry the publishing dataset and its citation, the unit, the regions plotted, the period the chart actually displays (never the dataset's wider history), and whether the source has published newer data since the image was captured. Community-uploaded charts (provenance 'extracted') carry a title, source line, unit and period that were read from the image itself and not checked against the original data. browse_by_tag, browse_by_category, get_leaderboard and get_meme_variants return images WITHOUT this metadata; the other search and image tools include it whenever a row exists. This tool covers only images that HAVE stored metadata, so use search_images for the widest chart coverage. Results exclude images classified controversial unless include_controversial is true.","before":"Search charts, maps and infographics that carry stored metadata of two kinds. Charts from Our World in Data and three statistical publishers (provenance 'authoritative') carry the publishing dataset and its citation, the unit, the regions plotted, the period the chart actually displays (never the dataset's wider history), and whether the source has published newer data since the image was captured. Community-uploaded charts (provenance 'extracted') carry a title, source line, unit and period that were read from the image itself and not checked against the original data. browse_by_tag, browse_by_category, get_leaderboard and get_mutation_group return images WITHOUT this metadata; the other search and image tools include it whenever a row exists. This tool covers only images that HAVE stored metadata, so use search_images for the widest chart coverage. Results exclude images classified controversial unless include_controversial is true.","detail":"Description of `search_charts` changed (2% word delta).","severity":"safe","descriptionDelta":0.021276595744680882}],"published_at":"2026-10-07T18:14:31.139Z"}]