{"version":"2.1.248","anchor":"mcp-retries-now-cover-auth-rejections","canonical_anchor":"mcp-retries-now-cover-auth-rejections","heading":"MCP retries now cover auth rejections","tier":"notice","area":"MCP","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.248\/e\/mcp-retries-now-cover-auth-rejections","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.248","markdown":"### MCP retries now cover auth rejections\n\nMCP now retries auth rejections, including rejected credential-helper tokens.\n\n**What**\n\nMCP error handling has an explicit set of codes it treats as retryable, combining HTTP 5xx, the existing connection error codes, and auth-rejection codes such as helper-minted credential rejections.\n\n**Details**\n\n- The MCP error classes moved out of a lazily loaded wrapper into plain top-level classes.\n- Applies unconditionally, with no flag.\n\n**Evidence**\n\n`HEADERS_HELPER_AUTH_REJECTED`\n\n- Area: MCP\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 2\/5"}