48 pages for /protocol.

Protocol eras Model Context Protocol · path docs/2026-07-28/tools/inspector/protocol-eras Protocol eras Model Context Protocol · path docs/draft/tools/inspector/protocol-eras Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry Claude Code CLI · in the page claude-apps-gateway …unning Claude apps gateway serves a superset of that contract at `GET /protocol`, adding the Claude apps gateway-specific endpoints for SSO sign-in, managed settings delivery, and telemetry. Fetch it… Claude apps gateway spend limits Claude Code CLI · in the page claude-apps-gateway-spend-limits …header. On v2.1.227 or later, the protocol reference at `<public_url>/protocol` also lists the exact usage-limit response headers and `429` body. Caps reset on UTC calendar boundaries: daily at 00:0… Gateway protocol reference Claude Code CLI · in the page llm-gateway-protocol …s-gateway) serves a machine-readable version of this contract at `GET /protocol`, covering the same forwarding requirements plus the Claude apps gateway-specific endpoints for SSO sign-in, managed-set… Monitoring Claude Code CLI · in the page monitoring-usage …com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/exporter.md#configuration-options). ## Administrator configuration Administrators can configure OpenTelemetry settings… Connect Google Drive, Calendar, and Gmail Claude Documentation · in the page claude-tag/admins/connections/google …ching API scopes. Google's guide is at [developers.google.com/identity/protocols/oauth2/service-account](https://developers.google.com/identity/protocols/oauth2/service-account#delegatingauthority).… Architecture overview Model Context Protocol · in the page docs/2026-07-28/learn/architecture …"params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "example-client",… Versioning Model Context Protocol · in the page docs/2026-07-28/learn/versioning …ares the protocol version it is using via the `io.modelcontextprotocol/protocolVersion` key in its [`_meta`](/specification/2026-07-28/basic/index#meta) field, and the server accepts or rejects each r… Debugging Model Context Protocol · in the page docs/2026-07-28/tools/debugging …asic/index#meta): every request must carry `io.modelcontextprotocol/protocolVersion` and `io.modelcontextprotocol/clientCapabilities`, and clients should also include `io.modelcontextprotocol… MCP Inspector Model Context Protocol · in the page docs/2026-07-28/tools/inspector …on disk, and the same [protocol-era](/docs/2026-07-28/tools/inspector/protocol-eras) negotiation (legacy vs. modern 2026-07-28). <Frame caption="The MCP Inspector web client, connected to a server,… CLI client Model Context Protocol · in the page docs/2026-07-28/tools/inspector/cli …ders, timeouts, OAuth, [protocol era](/docs/2026-07-28/tools/inspector/protocol-eras), and roots) apply to the connection, resolved exactly as the TUI and web client resolve them. A `--header` flag ov… Configuration and flags Model Context Protocol · in the page docs/2026-07-28/tools/inspector/configuration …l. `protocolEra` (see [Protocol eras](/docs/2026-07-28/tools/inspector/protocol-eras)) defaults to `legacy` and `modernLogLevel` to `debug`. You do not have to hand-write these; the web client can [i… Recipes Model Context Protocol · in the page docs/2026-07-28/tools/inspector/recipes …erver, also decide its [protocol era](/docs/2026-07-28/tools/inspector/protocol-eras). The default is `legacy`; set `modern` or `auto` in Server Settings (or `protocolEra` in the catalog file) to exer… Web client Model Context Protocol · in the page docs/2026-07-28/tools/inspector/web …eras are described in [Protocol eras](/docs/2026-07-28/tools/inspector/protocol-eras). <Frame caption="The tab bar on a connected server. Which tabs appear depends on the capabilities the server repo… Architecture overview Model Context Protocol · in the page docs/draft/learn/architecture …"params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "example-client",… Versioning Model Context Protocol · in the page docs/draft/learn/versioning …ares the protocol version it is using via the `io.modelcontextprotocol/protocolVersion` key in its [`_meta`](/specification/draft/basic/index#meta) field, and the server accepts or rejects each reques… Debugging Model Context Protocol · in the page docs/draft/tools/debugging …asic/index#meta): every request must carry `io.modelcontextprotocol/protocolVersion` and `io.modelcontextprotocol/clientCapabilities`, and clients should also include `io.modelcontextprotocol… MCP Inspector Model Context Protocol · in the page docs/draft/tools/inspector …state on disk, and the same [protocol-era](/docs/draft/tools/inspector/protocol-eras) negotiation (legacy vs. modern 2026-07-28). <Frame caption="The MCP Inspector web client, connected to a server,… CLI client Model Context Protocol · in the page docs/draft/tools/inspector/cli …(headers, timeouts, OAuth, [protocol era](/docs/draft/tools/inspector/protocol-eras), and roots) apply to the connection, resolved exactly as the TUI and web client resolve them. A `--header` flag ov… Configuration and flags Model Context Protocol · in the page docs/draft/tools/inspector/configuration …inimal. `protocolEra` (see [Protocol eras](/docs/draft/tools/inspector/protocol-eras)) defaults to `legacy` and `modernLogLevel` to `debug`. You do not have to hand-write these; the web client can [i… Recipes Model Context Protocol · in the page docs/draft/tools/inspector/recipes …TTP server, also decide its [protocol era](/docs/draft/tools/inspector/protocol-eras). The default is `legacy`; set `modern` or `auto` in Server Settings (or `protocolEra` in the catalog file) to exer… Web client Model Context Protocol · in the page docs/draft/tools/inspector/web …dern eras are described in [Protocol eras](/docs/draft/tools/inspector/protocol-eras). <Frame caption="The tab bar on a connected server. Which tabs appear depends on the capabilities the server repo… Extensions Overview Model Context Protocol · in the page extensions/overview …tion": "New York" }, "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientCapabilities": { "extensions": { "io.model… SEP-2575: Make MCP Stateless Model Context Protocol · in the page seps/2575-stateless-mcp …Version being used for this request. + */ + "io.modelcontextprotocol/protocolVersion": string; // Additional per-request fields (clientInfo, clientCapabilities, logLevel) // are introduced in th… Overview Model Context Protocol · in the page specification/2026-07-28/basic/index …-07-28/basic/patterns/progress) | | `io.modelcontextprotocol/protocolVersion` | Protocol version for a request | Per-request protocol fields (below)… Multi Round-Trip Requests Model Context Protocol · in the page specification/2026-07-28/basic/patterns/mrtr …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Subscriptions Model Context Protocol · in the page specification/2026-07-28/basic/patterns/subscriptions …s/listen", "params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "ExampleClient", "version":… Streamable HTTP Model Context Protocol · in the page specification/2026-07-28/basic/transports/streamable-http …6-07-28` The header value **MUST** match the `io.modelcontextprotocol/protocolVersion` field carried in the request body's `_meta`. If the values do not match, the server **MUST** reject the request… Key Changes Model Context Protocol · in the page specification/2026-07-28/changelog …l version and client capabilities in `_meta` (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientCapabilities`). Clients SHOULD identify themselves on each request (`io.modelcon… Schema Reference Model Context Protocol · in the page specification/2026-07-28/schema …an class="hl-0"> </span><span class="hl-1">"io.modelcontextprotocol/protocolVersion"</span><span class="hl-0">: </span><span class="hl-2">"2026-07-28"</span><span class="hl-0">,</span><br /><span c… Discovery Model Context Protocol · in the page specification/2026-07-28/server/discover …discover", "params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "ExampleClient", "version":… Prompts Model Context Protocol · in the page specification/2026-07-28/server/prompts …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Resources Model Context Protocol · in the page specification/2026-07-28/server/resources …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Tools Model Context Protocol · in the page specification/2026-07-28/server/tools …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Completion Model Context Protocol · in the page specification/2026-07-28/server/utilities/completion …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Pagination Model Context Protocol · in the page specification/2026-07-28/server/utilities/pagination …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Overview Model Context Protocol · in the page specification/draft/basic/index …/draft/basic/patterns/progress) | | `io.modelcontextprotocol/protocolVersion` | Protocol version for a request | Per-request protocol fields (below)… Multi Round-Trip Requests Model Context Protocol · in the page specification/draft/basic/patterns/mrtr …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Subscriptions Model Context Protocol · in the page specification/draft/basic/patterns/subscriptions …s/listen", "params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "ExampleClient", "version":… Streamable HTTP Model Context Protocol · in the page specification/draft/basic/transports/streamable-http …6-07-28` The header value **MUST** match the `io.modelcontextprotocol/protocolVersion` field carried in the request body's `_meta`. If the values do not match, the server **MUST** reject the request… Schema Reference Model Context Protocol · in the page specification/draft/schema …an class="hl-0"> </span><span class="hl-1">"io.modelcontextprotocol/protocolVersion"</span><span class="hl-0">: </span><span class="hl-2">"2026-07-28"</span><span class="hl-0">,</span><br /><span c… Discovery Model Context Protocol · in the page specification/draft/server/discover …discover", "params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "ExampleClient", "version":… Prompts Model Context Protocol · in the page specification/draft/server/prompts …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Resources Model Context Protocol · in the page specification/draft/server/resources …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Tools Model Context Protocol · in the page specification/draft/server/tools …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Completion Model Context Protocol · in the page specification/draft/server/utilities/completion …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU… Pagination Model Context Protocol · in the page specification/draft/server/utilities/pagination …his page omit the `_meta` request metadata (`io.modelcontextprotocol/protocolVersion`, `io.modelcontextprotocol/clientInfo`, and `io.modelcontextprotocol/clientCapabilities`). Every request **MU…