878 pages for check.

Client Best Practices Model Context Protocol · in the page docs/2025-03-26/develop/clients/client-best-practices …en/agents-and-tools/tool-use/tool-search-tool) support this natively; check your provider's documentation for an equivalent. When available, you may prefer the platform's tool search over a custom imp… Connect to local MCP servers Model Context Protocol · in the page docs/2025-03-26/develop/connect-local-servers …running the latest version by clicking the Claude menu and selecting "Check for Updates..." ### Node.js The Filesystem Server and many other MCP servers require Node.js to run. Verify your Node.js i… Understanding MCP clients Model Context Protocol · in the page docs/2025-03-26/learn/client-concepts …nse ``` The flow ensures security through multiple human-in-the-loop checkpoints. Users review and can modify both the initial request and the generated response before it returns to the server. **R… Understanding MCP servers Model Context Protocol · in the page docs/2025-03-26/learn/server-concepts …levant information: * **Calendar data** (`calendar://events/2024`) - Checks user availability * **Travel documents** (`file:///Documents/Travel/passport.pdf`) - Accesses important documents * **Previ… Debugging Model Context Protocol · in the page docs/2025-03-26/tools/debugging …trictions ### Connection problems When servers fail to connect: 1. Check client logs 2. Verify server process is running 3. Test standalone with [Inspector](https://modelcontextprotocol.io/docs/202… MCP Inspector Model Context Protocol · in the page docs/2025-03-26/tools/inspector …Launch Inspector with your server * Verify basic connectivity * Check capability negotiation 2. Iterative testing * Make server changes * Rebuild the server * Reconnect the Inspector… Understanding Authorization in MCP Model Context Protocol · in the page docs/2025-03-26/tutorials/security/authorization …need for MCP servers, including Dynamic Client Registration. You can check this by looking at the OIDC configuration, available at: ```http theme={null} http://localhost:8080/realms/master/.well-kno… Security Best Practices Model Context Protocol · in the page docs/2025-03-26/tutorials/security/security_best_practices …Browser->>MCP: GET /authorize?client_id=...&redirect_uri=... alt Check MCP Server Consent MCP->>MCP: Check consent for this client_id Note over MCP: Not previously approved en… Build an MCP client Model Context Protocol · in the page docs/2025-06-18/develop/build-client …ssions > > ## Troubleshooting > > ### Server Path Issues > > * Double-check the path to your server script is correct > * Use the absolute path if the relative path isn't working > * For Windows users… Build an MCP server Model Context Protocol · in the page docs/2025-06-18/develop/build-server …", > "strict": true, > "esModuleInterop": true, > "skipLibCheck": true, > "forceConsistentCasingInFileNames": true > }, > "include": ["src/**/*"], > "exclude": ["node_modules"] >… Build with Agent Skills Model Context Protocol · in the page docs/2025-06-18/develop/build-with-agent-skills …lugins-official /plugin install mcp-server-dev ``` For other agents, check your skills or extensions catalog, or clone the [skill directories](https://github.com/anthropics/claude-plugins-official/tr… Client Best Practices Model Context Protocol · in the page docs/2025-06-18/develop/clients/client-best-practices …en/agents-and-tools/tool-use/tool-search-tool) support this natively; check your provider's documentation for an equivalent. When available, you may prefer the platform's tool search over a custom imp… Connect to local MCP servers Model Context Protocol · in the page docs/2025-06-18/develop/connect-local-servers …running the latest version by clicking the Claude menu and selecting "Check for Updates..." ### Node.js The Filesystem Server and many other MCP servers require Node.js to run. Verify your Node.js i… Understanding MCP clients Model Context Protocol · in the page docs/2025-06-18/learn/client-concepts …information through appropriate UI controls (text fields, dropdowns, checkboxes), decline to provide information with optional explanation, or cancel the entire operation. Clients validate responses… Understanding MCP servers Model Context Protocol · in the page docs/2025-06-18/learn/server-concepts …levant information: * **Calendar data** (`calendar://events/2024`) - Checks user availability * **Travel documents** (`file:///Documents/Travel/passport.pdf`) - Accesses important documents * **Previ… Debugging Model Context Protocol · in the page docs/2025-06-18/tools/debugging …trictions ### Connection problems When servers fail to connect: 1. Check client logs 2. Verify server process is running 3. Test standalone with [Inspector](https://modelcontextprotocol.io/docs/202… MCP Inspector Model Context Protocol · in the page docs/2025-06-18/tools/inspector …Launch Inspector with your server * Verify basic connectivity * Check capability negotiation 2. Iterative testing * Make server changes * Rebuild the server * Reconnect the Inspector… Understanding Authorization in MCP Model Context Protocol · in the page docs/2025-06-18/tutorials/security/authorization …need for MCP servers, including Dynamic Client Registration. You can check this by looking at the OIDC configuration, available at: ```http theme={null} http://localhost:8080/realms/master/.well-kno… Security Best Practices Model Context Protocol · in the page docs/2025-06-18/tutorials/security/security_best_practices …Browser->>MCP: GET /authorize?client_id=...&redirect_uri=... alt Check MCP Server Consent MCP->>MCP: Check consent for this client_id Note over MCP: Not previously approved en… Build an MCP client Model Context Protocol · in the page docs/2025-11-25/develop/build-client …client > > ## Troubleshooting > > ### Server Path Issues > > * Double-check the path to your server script is correct > * Use the absolute path if the relative path isn't working > * For Windows users… Build an MCP server Model Context Protocol · in the page docs/2025-11-25/develop/build-server …", > "strict": true, > "esModuleInterop": true, > "skipLibCheck": true, > "forceConsistentCasingInFileNames": true > }, > "include": ["src/**/*"], > "exclude": ["node_modules"] >… Build with Agent Skills Model Context Protocol · in the page docs/2025-11-25/develop/build-with-agent-skills …lugins-official /plugin install mcp-server-dev ``` For other agents, check your skills or extensions catalog, or clone the [skill directories](https://github.com/anthropics/claude-plugins-official/tr… Client Best Practices Model Context Protocol · in the page docs/2025-11-25/develop/clients/client-best-practices …en/agents-and-tools/tool-use/tool-search-tool) support this natively; check your provider's documentation for an equivalent. When available, you may prefer the platform's tool search over a custom imp… Connect to local MCP servers Model Context Protocol · in the page docs/2025-11-25/develop/connect-local-servers …running the latest version by clicking the Claude menu and selecting "Check for Updates..." ### Node.js The Filesystem Server and many other MCP servers require Node.js to run. Verify your Node.js i… Understanding MCP clients Model Context Protocol · in the page docs/2025-11-25/learn/client-concepts …information through appropriate UI controls (text fields, dropdowns, checkboxes), decline to provide information with optional explanation, or cancel the entire operation. Clients validate responses… Understanding MCP servers Model Context Protocol · in the page docs/2025-11-25/learn/server-concepts …levant information: * **Calendar data** (`calendar://events/2024`) - Checks user availability * **Travel documents** (`file:///Documents/Travel/passport.pdf`) - Accesses important documents * **Previ… Debugging Model Context Protocol · in the page docs/2025-11-25/tools/debugging …trictions ### Connection problems When servers fail to connect: 1. Check client logs 2. Verify server process is running 3. Test standalone with [Inspector](https://modelcontextprotocol.io/docs/202… MCP Inspector Model Context Protocol · in the page docs/2025-11-25/tools/inspector …Launch Inspector with your server * Verify basic connectivity * Check capability negotiation 2. Iterative testing * Make server changes * Rebuild the server * Reconnect the Inspector… Understanding Authorization in MCP Model Context Protocol · in the page docs/2025-11-25/tutorials/security/authorization …need for MCP servers, including Dynamic Client Registration. You can check this by looking at the OIDC configuration, available at: ```http theme={null} http://localhost:8080/realms/master/.well-kno… Security Best Practices Model Context Protocol · in the page docs/2025-11-25/tutorials/security/security_best_practices …Browser->>MCP: GET /authorize?client_id=...&redirect_uri=... alt Check MCP Server Consent MCP->>MCP: Check consent for this client_id Note over MCP: Not previously approved en… Build an MCP client Model Context Protocol · in the page docs/2026-07-28/develop/build-client …splayed to you > > ## Best practices > > 1. **Error Handling** > * Check `result.is_error` rather than expecting a failing tool to raise > * Keep the tool loop capped so a query that never settl… Build an MCP server Model Context Protocol · in the page docs/2026-07-28/develop/build-server …", > "strict": true, > "esModuleInterop": true, > "skipLibCheck": true, > "forceConsistentCasingInFileNames": true > }, > "include": ["src/**/*"], > "exclude": ["node_modules"] >… Build with Agent Skills Model Context Protocol · in the page docs/2026-07-28/develop/build-with-agent-skills …lugins-official /plugin install mcp-server-dev ``` For other agents, check your skills or extensions catalog, or clone the [skill directories](https://github.com/anthropics/claude-plugins-official/tr… Client Best Practices Model Context Protocol · in the page docs/2026-07-28/develop/clients/client-best-practices …en/agents-and-tools/tool-use/tool-search-tool) support this natively; check your provider's documentation for an equivalent. When available, you may prefer the platform's tool search over a custom imp… Connect to local MCP servers Model Context Protocol · in the page docs/2026-07-28/develop/connect-local-servers …running the latest version by clicking the Claude menu and selecting "Check for Updates..." ### Node.js The Filesystem Server and many other MCP servers require Node.js to run. Verify your Node.js i… Understanding MCP clients Model Context Protocol · in the page docs/2026-07-28/learn/client-concepts …information through appropriate UI controls (text fields, dropdowns, checkboxes), decline to provide information with optional explanation, or cancel the entire operation. Clients validate responses… Understanding MCP servers Model Context Protocol · in the page docs/2026-07-28/learn/server-concepts …levant information: * **Calendar data** (`calendar://events/2024`) - Checks user availability * **Travel documents** (`file:///Documents/Travel/passport.pdf`) - Accesses important documents * **Previ… SDKs Model Context Protocol · in the page docs/2026-07-28/sdk …anguage. SDKs adopt new protocol revisions on their own schedules, so check each SDK's documentation for the revisions it supports. All SDKs support: * Creating MCP servers that expose tools, resourc… Debugging Model Context Protocol · in the page docs/2026-07-28/tools/debugging …trictions ### Connection problems When servers fail to connect: 1. Check client logs 2. Verify server process is running 3. Test standalone with [Inspector](https://modelcontextprotocol.io/docs/202… CLI client Model Context Protocol · in the page docs/2026-07-28/tools/inspector/cli …}`. | | `tools/list` | None | `--strict` turns its schema portability check into a gate (see [CI gates](#ci-gates)). | | `tools/call` | `--tool-name`, plus optional `--tool-arg` / `--tool-args-json` |… Configuration and flags Model Context Protocol · in the page docs/2026-07-28/tools/inspector/configuration …file you > didn't write: a coworker's, a client application's, or one checked into a > repo. It guarantees the Inspector will not touch the file. ### Ad-hoc targets Instead of a file you can name on… Recipes Model Context Protocol · in the page docs/2026-07-28/tools/inspector/recipes …o`, TUI), which is where most stdio servers put their diagnostics, so check there first when a connection fails for no visible reason. ### HTTP and SSE ```bash theme={null} mcp-inspector --server-ur… Security Model Context Protocol · in the page docs/2026-07-28/tools/inspector/security …* `Origin` header (curl, a script, any non-browser client) skips that check entirely. A `Host` header allow-list runs ahead of every route, including `GET /`, and answers `403` to a request whose `Hos… Web client Model Context Protocol · in the page docs/2026-07-28/tools/inspector/web …cripted launches), or set `DANGEROUSLY_OMIT_AUTH=true` to disable the check entirely, but only on a machine where nothing else can reach the port. Both are described under [Web backend environment var… Understanding Authorization in MCP Model Context Protocol · in the page docs/2026-07-28/tutorials/security/authorization …zation_response_iss_parameter_supported": true } ``` The client must check two of these values: * `issuer` must be identical to the issuer identifier used to build the metadata URL. If it isn't, the… Local Server Security Model Context Protocol · in the page docs/2026-07-28/tutorials/security/local-server-security …above). Before the mitigations, one fact that shapes them all: **no check proves what a server will do.** The protocol cannot guarantee that a server is what it claims or does only what it promises.… Security Best Practices Model Context Protocol · in the page docs/2026-07-28/tutorials/security/security_best_practices …Browser->>MCP: GET /authorize?client_id=...&redirect_uri=... alt Check MCP Server Consent MCP->>MCP: Check consent for this client_id Note over MCP: Not previously approved en… Build an MCP client Model Context Protocol · in the page docs/draft/develop/build-client …splayed to you > > ## Best practices > > 1. **Error Handling** > * Check `result.is_error` rather than expecting a failing tool to raise > * Keep the tool loop capped so a query that never settl… Build an MCP server Model Context Protocol · in the page docs/draft/develop/build-server …", > "strict": true, > "esModuleInterop": true, > "skipLibCheck": true, > "forceConsistentCasingInFileNames": true > }, > "include": ["src/**/*"], > "exclude": ["node_modules"] >… Build with Agent Skills Model Context Protocol · in the page docs/draft/develop/build-with-agent-skills …lugins-official /plugin install mcp-server-dev ``` For other agents, check your skills or extensions catalog, or clone the [skill directories](https://github.com/anthropics/claude-plugins-official/tr…