936 pages for error.

Deploy with MDM Claude Documentation · in the page third-party/claude-desktop/mdm …versions before 4.16336.0 treat a key that they don't recognize as an error in `managed-settings.json`, so add `deploymentMode` to a device's file after that device updates. ### Update keys and manag… Models and effort levels Claude Documentation · in the page third-party/claude-desktop/models …onfig.txt`**: `behavesAs dropped: not an accepted value` under `Parse errors` means the value isn't a model ID. Enter a full ID such as `claude-sonnet-5`, not a family name such as `sonnet`. Without… Migrate Claude Desktop from a cloud provider to Claude Enterprise Claude Documentation · in the page third-party/claude-desktop/move-to-claude-enterprise …r cloud provider for everyone. ### Nothing migrated Claude shows no error on screen when nothing migrates. The app's `main.log` usually gives the reason. Check for each of these causes: * `importTh… Network proxy Claude Documentation · in the page third-party/claude-desktop/network-proxy …[The agent uses one proxy](#the-agent-uses-one-proxy). **Certificate errors.** See [TLS-intercepting proxies](#tls-intercepting-proxies). ## Related * [Configuration reference](https://claude.com/d… Scheduled tasks in Claude Desktop on 3P Claude Documentation · in the page third-party/claude-desktop/scheduled-tasks …aits. If your provider or gateway doesn't answer, or returns a server error such as 500, 503, or 529, before Claude starts to respond, Claude Desktop starts the run again up to eight times over three… SSH remote sessions in Claude Desktop on 3P Claude Documentation · in the page third-party/claude-desktop/ssh-remote-sessions …, so a turn that outlives the credential fails with an authentication error. A restart of the app for an update counts as a quit. When the user reopens the session after a quit, Claude Desktop rejoin… Show a status line Claude Documentation · in the page third-party/claude-desktop/status-line …akes longer than 10 seconds, the line disappears and the user sees no error. The next successful run brings the line back. ## Troubleshoot a missing status line Search `main.log` in the [logs direct… Telemetry and egress Claude Documentation · in the page third-party/claude-desktop/telemetry …e category's key to `false`. ### Essential telemetry Crash reports, error stack traces, and performance timings. Contains diagnostic metadata (app version, OS, error type, redacted stack frames) but… Web search and web fetch Claude Documentation · in the page third-party/claude-desktop/web-tools …ration#otlpdesktoploglevel) is `info` or `debug`, not at the default `error` level. > [!NOTE] > > If you previously routed inference through a LiteLLM proxy to add search, the built-in `websearch` se… Filesystems Charter Model Context Protocol · in the page community/working-groups/filesystems …s a resource under a create-if-absent precondition. 6. **Typed errors.** Define errors for resource operations, e.g. not found, already exists, precondition failed and permission denied, s… SDK Working Group Charter Model Context Protocol · in the page community/working-groups/sdk …mending common patterns for SDK API surface, versioning, deprecation, error handling, and extension packaging, so that SDKs remain recognisably similar across languages while staying idiomatic. * **Co… Transports Charter Model Context Protocol · in the page community/working-groups/transports …n management, resource efficiency, multiplexing, load distribution, error handling, reconnection, resumption, and the delivery and ordering guarantees offered by a binding. * **Transport-Adjacent… Roadmap Model Context Protocol · in the page development/roadmap …t done yet" that don't share a lifecycle, a cancellation model, or an error surface. We want them to compose. **This roadmap period:** * **Server-initiated events**: [Tasks & Events WG](https://mode… Build an MCP client Model Context Protocol · in the page docs/2024-11-05/develop/build-client …dswith('.js') > if not (is_python or is_js): > raise ValueError("Server script must be a .py or .js file") > > command = "python" if is_python else "node" > server_params = StdioSe… Build an MCP server Model Context Protocol · in the page docs/2024-11-05/develop/build-server …[str, Any] | None: > """Make a request to the NWS API with proper error handling.""" > headers = {"User-Agent": USER_AGENT, "Accept": "application/geo+json"} > async with httpx.AsyncClient… Build with Agent Skills Model Context Protocol · in the page docs/2024-11-05/develop/build-with-agent-skills …nce your agent scaffolds the server, iterate on tool descriptions and error handling, then test and ship: > [card] [MCP Inspector](https://modelcontextprotocol.io/docs/2024-11-05/tools/inspector.md)… Client Best Practices Model Context Protocol · in the page docs/2024-11-05/develop/clients/client-best-practices …ring; level: string; } function logging_getLogs(input: { level: "error" | "warn" | "info"; since: number; }): Promise<{ entries: LogEntry[] }> { return mcp.callTool<{ entries: LogEntry[] }>("… Connect to local MCP servers Model Context Protocol · in the page docs/2024-11-05/develop/connect-local-servers …me` as you did in `claude_desktop_config.json`) to see if you get any errors: > > ```bash macOS/Linux theme={null} > npx -y @modelcontextprotocol/server-filesystem /Users/username/Desktop /Users/usern… Architecture overview Model Context Protocol · in the page docs/2024-11-05/learn/architecture …r are using compatible protocol versions. This prevents communication errors that could occur when different versions attempt to interact. If a mutually compatible version is not negotiated, the conne… Versioning Model Context Protocol · in the page docs/2024-11-05/learn/versioning …le version to use for the session. The protocol provides appropriate error handling if version negotiation fails, allowing clients to gracefully terminate connections when they cannot find a version… Debugging Model Context Protocol · in the page docs/2024-11-05/tools/debugging …5/basic/transports.md#stdio), all messages logged to stderr (standard error) will be captured by the host application automatically. > [!WARNING] > > Local MCP servers should not log messages to stdo… MCP Inspector Model Context Protocol · in the page docs/2024-11-05/tools/inspector …* Missing prompt arguments * Concurrent operations * Verify error handling and error responses ## Next steps > [card] [Inspector Repository](https://github.com/modelcontextprotocol/inspect… Understanding Authorization in MCP Model Context Protocol · in the page docs/2024-11-05/tutorials/security/authorization …data.introspection_endpoint; > > if (!endpoint) { > console.error("[auth] no introspection endpoint in metadata"); > throw new Error("No token verification endpoint available in metada… Security Best Practices Model Context Protocol · in the page docs/2024-11-05/tutorials/security/security_best_practices …Internal-->>Client: Cloud credentials/metadata Note over Client: Error or response details leak to attacker Client->>MCP: Subsequent request with error details ``` #### Risks * **Credential… Build an MCP client Model Context Protocol · in the page docs/2025-03-26/develop/build-client …dswith('.js') > if not (is_python or is_js): > raise ValueError("Server script must be a .py or .js file") > > command = "python" if is_python else "node" > server_params = StdioSe… Build an MCP server Model Context Protocol · in the page docs/2025-03-26/develop/build-server …[str, Any] | None: > """Make a request to the NWS API with proper error handling.""" > headers = {"User-Agent": USER_AGENT, "Accept": "application/geo+json"} > async with httpx.AsyncClient… Build with Agent Skills Model Context Protocol · in the page docs/2025-03-26/develop/build-with-agent-skills …nce your agent scaffolds the server, iterate on tool descriptions and error handling, then test and ship: > [card] [MCP Inspector](https://modelcontextprotocol.io/docs/2025-03-26/tools/inspector.md)… Client Best Practices Model Context Protocol · in the page docs/2025-03-26/develop/clients/client-best-practices …ring; level: string; } function logging_getLogs(input: { level: "error" | "warn" | "info"; since: number; }): Promise<{ entries: LogEntry[] }> { return mcp.callTool<{ entries: LogEntry[] }>("… Connect to local MCP servers Model Context Protocol · in the page docs/2025-03-26/develop/connect-local-servers …me` as you did in `claude_desktop_config.json`) to see if you get any errors: > > ```bash macOS/Linux theme={null} > npx -y @modelcontextprotocol/server-filesystem /Users/username/Desktop /Users/usern… Architecture overview Model Context Protocol · in the page docs/2025-03-26/learn/architecture …r are using compatible protocol versions. This prevents communication errors that could occur when different versions attempt to interact. If a mutually compatible version is not negotiated, the conne… Versioning Model Context Protocol · in the page docs/2025-03-26/learn/versioning …le version to use for the session. The protocol provides appropriate error handling if version negotiation fails, allowing clients to gracefully terminate connections when they cannot find a version… Debugging Model Context Protocol · in the page docs/2025-03-26/tools/debugging …6/basic/transports.md#stdio), all messages logged to stderr (standard error) will be captured by the host application automatically. > [!WARNING] > > Local MCP servers should not log messages to stdo… MCP Inspector Model Context Protocol · in the page docs/2025-03-26/tools/inspector …* Missing prompt arguments * Concurrent operations * Verify error handling and error responses ## Next steps > [card] [Inspector Repository](https://github.com/modelcontextprotocol/inspect… Understanding Authorization in MCP Model Context Protocol · in the page docs/2025-03-26/tutorials/security/authorization …data.introspection_endpoint; > > if (!endpoint) { > console.error("[auth] no introspection endpoint in metadata"); > throw new Error("No token verification endpoint available in metada… Security Best Practices Model Context Protocol · in the page docs/2025-03-26/tutorials/security/security_best_practices …Internal-->>Client: Cloud credentials/metadata Note over Client: Error or response details leak to attacker Client->>MCP: Subsequent request with error details ``` #### Risks * **Credential… Build an MCP client Model Context Protocol · in the page docs/2025-06-18/develop/build-client …dswith('.js') > if not (is_python or is_js): > raise ValueError("Server script must be a .py or .js file") > > command = "python" if is_python else "node" > server_params = StdioSe… Build an MCP server Model Context Protocol · in the page docs/2025-06-18/develop/build-server …[str, Any] | None: > """Make a request to the NWS API with proper error handling.""" > headers = {"User-Agent": USER_AGENT, "Accept": "application/geo+json"} > async with httpx.AsyncClient… Build with Agent Skills Model Context Protocol · in the page docs/2025-06-18/develop/build-with-agent-skills …nce your agent scaffolds the server, iterate on tool descriptions and error handling, then test and ship: > [card] [MCP Inspector](https://modelcontextprotocol.io/docs/2025-06-18/tools/inspector.md)… Client Best Practices Model Context Protocol · in the page docs/2025-06-18/develop/clients/client-best-practices …ring; level: string; } function logging_getLogs(input: { level: "error" | "warn" | "info"; since: number; }): Promise<{ entries: LogEntry[] }> { return mcp.callTool<{ entries: LogEntry[] }>("… Connect to local MCP servers Model Context Protocol · in the page docs/2025-06-18/develop/connect-local-servers …me` as you did in `claude_desktop_config.json`) to see if you get any errors: > > ```bash macOS/Linux theme={null} > npx -y @modelcontextprotocol/server-filesystem /Users/username/Desktop /Users/usern… Architecture overview Model Context Protocol · in the page docs/2025-06-18/learn/architecture …r are using compatible protocol versions. This prevents communication errors that could occur when different versions attempt to interact. If a mutually compatible version is not negotiated, the conne… Versioning Model Context Protocol · in the page docs/2025-06-18/learn/versioning …le version to use for the session. The protocol provides appropriate error handling if version negotiation fails, allowing clients to gracefully terminate connections when they cannot find a version… Debugging Model Context Protocol · in the page docs/2025-06-18/tools/debugging …8/basic/transports.md#stdio), all messages logged to stderr (standard error) will be captured by the host application automatically. > [!WARNING] > > Local MCP servers should not log messages to stdo… MCP Inspector Model Context Protocol · in the page docs/2025-06-18/tools/inspector …* Missing prompt arguments * Concurrent operations * Verify error handling and error responses ## Next steps > [card] [Inspector Repository](https://github.com/modelcontextprotocol/inspect… Understanding Authorization in MCP Model Context Protocol · in the page docs/2025-06-18/tutorials/security/authorization …data.introspection_endpoint; > > if (!endpoint) { > console.error("[auth] no introspection endpoint in metadata"); > throw new Error("No token verification endpoint available in metada… Security Best Practices Model Context Protocol · in the page docs/2025-06-18/tutorials/security/security_best_practices …Internal-->>Client: Cloud credentials/metadata Note over Client: Error or response details leak to attacker Client->>MCP: Subsequent request with error details ``` #### Risks * **Credential… Build an MCP client Model Context Protocol · in the page docs/2025-11-25/develop/build-client …dswith('.js') > if not (is_python or is_js): > raise ValueError("Server script must be a .py or .js file") > > command = "python" if is_python else "node" > server_params = StdioSe… Build an MCP server Model Context Protocol · in the page docs/2025-11-25/develop/build-server …[str, Any] | None: > """Make a request to the NWS API with proper error handling.""" > headers = {"User-Agent": USER_AGENT, "Accept": "application/geo+json"} > async with httpx.AsyncClient… Build with Agent Skills Model Context Protocol · in the page docs/2025-11-25/develop/build-with-agent-skills …nce your agent scaffolds the server, iterate on tool descriptions and error handling, then test and ship: > [card] [MCP Inspector](https://modelcontextprotocol.io/docs/2025-11-25/tools/inspector.md)… Client Best Practices Model Context Protocol · in the page docs/2025-11-25/develop/clients/client-best-practices …ring; level: string; } function logging_getLogs(input: { level: "error" | "warn" | "info"; since: number; }): Promise<{ entries: LogEntry[] }> { return mcp.callTool<{ entries: LogEntry[] }>("…