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io.github.cyanheads/chembl-mcp-server

io.github.cyanheads/chembl-mcp-server

by io.github.cyanheads· v0.6.0Source: Official MCP Registry
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Change history

Every change Squatch detected in tools, permissions, endpoints, versions and disclosures. History is append-only: entries are never edited or removed.

Nov 11, 2026

  1. Resource changedSeverity: Info

    resource:skill://chembl-guide/SKILL.md

    The resource definition changed.

    Detected

  2. Tool addedSeverity: Low

    chembl_get_documents

    New tool with effect READ.

    Detected

  3. Tool output schema changedSeverity: Low

    chembl_search_targets

    The declared output schema changed.

    Detected

  4. Tool input schema changedSeverity: Low

    chembl_search_targets

    Parameter descriptions or examples changed; the parameter structure is unchanged.

    Detected

  5. Tool description changedSeverity: Low

    chembl_search_targets

    The tool description changed.

    Detected

  6. Tool output schema changedSeverity: Low

    chembl_search_molecules

    The declared output schema changed.

    Detected

  7. Tool input schema changedSeverity: Low

    chembl_search_molecules

    Parameter descriptions or examples changed; the parameter structure is unchanged.

    Detected

  8. Tool output schema changedSeverity: Low

    chembl_get_drug_info

    The declared output schema changed.

    Detected

  9. Tool description changedSeverity: Low

    chembl_get_drug_info

    The tool description changed.

    Detected

  10. Tool output schema changedSeverity: Low

    chembl_get_bioactivities

    The declared output schema changed.

    Detected

  11. Tool input schema changedSeverity: Low

    chembl_get_bioactivities

    Parameters added: 0; removed: 0.

    Detected

  12. Tool description changedSeverity: Low

    chembl_get_bioactivities

    The tool description changed.

    Detected

  13. Tool output schema changedSeverity: Low

    chembl_get_assay

    The declared output schema changed.

    Detected

  14. Tool input schema changedSeverity: Low

    chembl_get_assay

    Parameters added: 1; removed: 1.

    Detected

  15. Tool description changedSeverity: Low

    chembl_get_assay

    The tool description changed.

    Detected

  16. Tool output schema changedSeverity: Low

    chembl_dataframe_query

    The declared output schema changed.

    Detected

  17. Tool description changedSeverity: Low

    chembl_dataframe_query

    The tool description changed.

    Detected

  18. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

Oct 29, 2026

  1. Extension addedSeverity: Low

    io.modelcontextprotocol/skills

    The server now advertises a protocol extension.

    Detected

  2. Resource addedSeverity: Info

    template:skill://{+path}

    A new resource was observed.

    Detected

  3. Resource addedSeverity: Info

    resource:skill://chembl-guide/SKILL.md

    A new resource was observed.

    Detected

  4. Tool output schema changedSeverity: Low

    chembl_search_molecules

    The declared output schema changed.

    Detected

  5. Tool output schema changedSeverity: Low

    chembl_get_drug_info

    The declared output schema changed.

    Detected

  6. Tool output schema changedSeverity: Low

    chembl_get_assay

    The declared output schema changed.

    Detected

  7. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

Oct 24, 2026

  1. Resource changedSeverity: Info

    template:chembl://molecule/{chemblId}

    The resource definition changed.

    Detected

  2. Tool output schema changedSeverity: Low

    chembl_search_targets

    The declared output schema changed.

    Detected

  3. Tool input schema changedSeverity: Low

    chembl_search_targets

    Parameters added: 0; removed: 0.

    Detected

  4. Tool output schema changedSeverity: Low

    chembl_search_molecules

    The declared output schema changed.

    Detected

  5. Tool input schema changedSeverity: Low

    chembl_search_molecules

    Parameters added: 0; removed: 0.

    Detected

  6. Tool description changedSeverity: Low

    chembl_search_molecules

    The tool description changed.

    Detected

  7. Tool output schema changedSeverity: Low

    chembl_get_drug_info

    The declared output schema changed.

    Detected

  8. Tool input schema changedSeverity: Low

    chembl_get_drug_info

    Parameter descriptions or examples changed; the parameter structure is unchanged.

    Detected

  9. Tool description changedSeverity: Low

    chembl_get_drug_info

    The tool description changed.

    Detected

  10. Tool output schema changedSeverity: Low

    chembl_get_bioactivities

    The declared output schema changed.

    Detected

  11. Tool input schema changedSeverity: Low

    chembl_get_bioactivities

    Parameters added: 2; removed: 0.

    Detected

  12. Tool description changedSeverity: Low

    chembl_get_bioactivities

    The tool description changed.

    Detected

  13. Tool input schema changedSeverity: Low

    chembl_get_assay

    Parameters added: 0; removed: 0.

    Detected

  14. Tool output schema changedSeverity: Low

    chembl_dataframe_query

    The declared output schema changed.

    Detected

  15. Tool description changedSeverity: Low

    chembl_dataframe_query

    The tool description changed.

    Detected

  16. Tool output schema changedSeverity: Low

    chembl_dataframe_describe

    The declared output schema changed.

    Detected

  17. Tool description changedSeverity: Low

    chembl_dataframe_describe

    The tool description changed.

    Detected

  18. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

Oct 20, 2026

  1. New version publishedSeverity: Info

    The server reports a new version.

    Detected

  2. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

Oct 16, 2026

  1. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

  2. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

  3. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

  4. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected

  5. New version publishedSeverity: Info

    A new version was published to the Official MCP Registry.

    Detected