{"version":"2.1.304","anchor":"mcp-skill-cache-metajson-writer-replaced","canonical_anchor":"mcp-skill-cache-metajson-writer-replaced","heading":"Saving the MCP skill cache file works differently","tier":"internal","area":"MCP","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.304\/e\/mcp-skill-cache-metajson-writer-replaced","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.304","markdown":"### Saving the MCP skill cache file works differently\n\nThe step that saves the MCP skill cache file was replaced, and its old \"meta.json write failed\" error is gone\n\n**Unclear.** It is unclear whether the MCP skill cache still exists or how this replacement changes its behaviour.\n\n**What**\n\nClaude Code keeps a small cache file called `meta.json` for skills that come from MCP servers. MCP servers are outside programs that give Claude extra tools. The step that saves this file has been replaced. The new version waits for pending work to finish, and the old \"meta.json write failed\" error no longer appears.\n\n**Why**\n\nThis may mean the MCP skill cache was reworked or removed.\n\n- Area: MCP\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}