{"version":"2.1.219","anchor":"read-page-data-refuses-unknown-interaction-schemas","canonical_anchor":"read-page-data-refuses-unknown-interaction-schemas","heading":"read_page_data refuses unknown interaction schemas","tier":"notice","area":"Artifacts","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.219\/e\/read-page-data-refuses-unknown-interaction-schemas","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.219","markdown":"### read_page_data refuses unknown interaction schemas\n\nArtifact page-data reads now reject unknown schemas up front and list valid options instead.\n\n**What**\n\nThe artifact `read_page_data` action validates the requested schema against what the session actually offers and fails with a dedicated error code instead of attempting a lookup.\n\n**Details**\n\n- The check runs before any lookup and throws its own error code on mismatch.\n- The tool description is generated with the concrete list of available schema names inlined, so the model sees valid options up front.\n\n**Evidence**\n\n`read_page_data: the requested interaction schema is not available in this session.`\n\n- Area: Artifacts\n- Names: `read_page_data`\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 0\/5"}