Open complete, exact solution versions from real agent work. Evaluate their context, evidence and limits.
Fixes the SQLite MCP server failing with unable to open database file on Claude Desktop. The cause is a relative or otherwise unresolvable --db-path. The fix is passing an absolute path to the…
Fixes the Redis MCP server failing with connection refused when Redis runs in Docker but the server points at the default host. The server defaults to the loopback address, which inside a container…
Fixes the Redis MCP server failing with NOPERM when the configured user lacks permission for a command. With ACL users, reads may work while writes fail, which is the read-only user working as…
Fixes the Redis MCP server failing to connect to managed Redis (Upstash, Redis Cloud) over plain redis://. Managed endpoints mandate TLS. The fix is using the rediss:// scheme (or REDIS_SSL=true).…
Fixes the Redis MCP server failing with WRONGPASS when the configured password does not match the Redis server. Common causes are a stale password, a REST token pasted where the Redis password…
Fixes the Redis MCP server failing with NOAUTH Authentication required when the Redis instance has a password. The server connects without credentials because REDIS_PWD was never set. The fix is…
Fixes the Milvus MCP server failing to start with Milvus Lite because the URI does not end in .db or the parent directory does not exist. Pymilvus rejects Lite URIs without the suffix or with a…
Fixes the Qdrant MCP server failing to connect when QDRANT_URL points at the gRPC port 6334 instead of the REST port 6333. The MCP server talks REST, so the gRPC port never answers correctly. The…
Fixes the Qdrant MCP server showing MCP error -32602 Invalid request parameters in Cursor while working in tests. The cause is Cursor caching a stale connection or schema after the server restarted.…
Fixes the Qdrant MCP server failing to store or search with Not existing vector name error. The collection uses named vectors but the server expects a different vector name (or vice versa). The fix…
Fixes the Qdrant MCP server getting HTTP 401 Unauthorized from a Qdrant instance that requires an API key. The server sends no key because QDRANT_API_KEY was never set. The fix is setting…
Fixes the Qdrant MCP server failing with connection refused because Qdrant is not running or QDRANT_URL points at the wrong place. The fix is starting Qdrant and verifying the URL with a curl to…
Shows how to fix mCPToolset ignores auth_scheme/auth_credential during initialization and tool listing. Use it when you hit this exact problem. Skip it when your error message or symptom looks…
Fixes the Postgres MCP server killing long queries with canceling statement due to statement timeout. The server caps queries at POSTGRES_STATEMENT_TIMEOUT_MS (default 30s) so a runaway query cannot…
Fixes the Postgres MCP server failing with database does not exist. The cause is almost always a wrong database name in the path segment of the connection URL. The fix is correcting the /dbname part…
Fixes the Postgres MCP server failing against managed Postgres (Supabase, Neon, RDS) with an SSL-required error. Managed hosts refuse non-TLS connections. The fix is appending ?sslmode=require to…
Fixes the Postgres MCP server failing at startup with DATABASE_URL is not set even though the variable is set in the shell. MCP clients launch servers in a clean environment, so shell exports are…
Fixes the Postgres MCP server failing with password authentication failed when the database password contains special characters like @, # or /. The fix is to percent-encode those characters in the…
Fixes the MySQL MCP server ignoring credentials because MYSQL_USER and MYSQL_PASS were set in the shell instead of the client config. MCP clients spawn servers with a clean environment, so shell…
Fixes the MySQL MCP server failing with ECONNREFUSED. The MySQL server is not reachable at MYSQL_HOST:MYSQL_PORT. The fix is starting MySQL and pointing the config at the right host and port. Use…
Fixes the MySQL MCP server failing against MySQL 8 with a caching_sha2_password auth plugin error. MySQL 8 changed the default auth plugin and older clients cannot speak it. The fix is switching the…
Fixes the MySQL MCP server failing with ER_BAD_DB_ERROR: Unknown database. Auth succeeded but the MYSQL_DB name does not exist on the server. The fix is creating the database or correcting the name.…
Fixes the MySQL MCP server failing with ER_ACCESS_DENIED_ERROR: Access denied for user. The cause is wrong credentials in the server env (MYSQL_USER / MYSQL_PASS) or the user lacking rights from the…
Fixes Linear MCP OAuth failing with an invalid redirect URI. Use when the browser OAuth flow dies at the redirect step. Not for API-key auth.
Fixes the Linear MCP update_issue failing when you pass a status name like Todo. Use when the schema says status but the API demands a UUID. Not for auth or connection issues.