53 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 Code changelog Claude Code CLI · in the page changelog …nnected * Improved the protocol page a Claude apps gateway serves at `/protocol`: it now says not to reject unknown input and matches what Claude Code sends today * \[VSCode] Improved the Manage plugi… Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry Claude Code CLI · in the page claude-apps-gateway …ng Claude apps gateway also serves its own protocol reference at `GET /protocol`, which describes the endpoints it exposes to Claude Code clients: SSO sign-in, inference, managed settings delivery, mo… 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… Claude Code gateway compatibility guide Claude Code CLI · in the page llm-gateway-protocol …opic's self-hosted gateway, serves its own endpoint reference at `GET /protocol`, covering that gateway's sign-in, inference, managed settings, model discovery, and telemetry endpoints. It is a separa… 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 …**Scopes** empty. Google's guide is at [developers.google.com/identity/protocols/oauth2/service-account](https://developers.google.com/identity/protocols/oauth2/service-account#delegatingauthority).… Build an MCP server Model Context Protocol · in the page docs/2026-07-28/develop/build-server …li.md) in the `modern` [protocol era](/docs/2026-07-28/tools/inspector/protocol-eras.md): ```bash theme={null} npx @modelcontextprotocol/inspector --cli node build/index.js --protocol-era modern --me… Architecture overview Model Context Protocol · in the page docs/2026-07-28/learn/architecture …discover", "params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "example-client", "version"… 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.md) negotiation (legacy vs. modern 2026-07-28). The package also installs **`mcpdo`**, an experimental [connection… 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.md), and roots) apply to the connection, resolved exactly as the TUI and web client resolve them. A `--header` flag… Configuration and flags Model Context Protocol · in the page docs/2026-07-28/tools/inspector/configuration …uto`, or `modern`: the [protocol era](/docs/2026-07-28/tools/inspector/protocol-eras.md) to negotiate. | Requires an ad-hoc target on the web client. The CLI and TUI also let it override a file's `pro… mcpdo connection client Model Context Protocol · in the page docs/2026-07-28/tools/inspector/mcpdo …` negotiates the same [protocol eras](/docs/2026-07-28/tools/inspector/protocol-eras.md) as the other clients. `connect --era legacy|auto|modern` overrides a catalog entry's `protocolEra`, and is the… 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.md). The default is `legacy`; set `modern` or `auto` in Server Settings (or `protocolEra` in the catalog file) to e… 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.md).  in the `modern` [protocol era](/docs/draft/tools/inspector/protocol-eras.md): ```bash theme={null} npx @modelcontextprotocol/inspector --cli node build/index.js --protocol-era modern --me… Architecture overview Model Context Protocol · in the page docs/draft/learn/architecture …discover", "params": { "_meta": { "io.modelcontextprotocol/protocolVersion": "2026-07-28", "io.modelcontextprotocol/clientInfo": { "name": "example-client", "version"… 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.md) negotiation (legacy vs. modern 2026-07-28). The package also installs **`mcpdo`**, an experimental [connection… CLI client Model Context Protocol · in the page docs/draft/tools/inspector/cli …(headers, timeouts, OAuth, [protocol era](/docs/draft/tools/inspector/protocol-eras.md), and roots) apply to the connection, resolved exactly as the TUI and web client resolve them. A `--header` flag… Configuration and flags Model Context Protocol · in the page docs/draft/tools/inspector/configuration …`, `auto`, or `modern`: the [protocol era](/docs/draft/tools/inspector/protocol-eras.md) to negotiate. | Requires an ad-hoc target on the web client. The CLI and TUI also let it override a file's `pro… mcpdo connection client Model Context Protocol · in the page docs/draft/tools/inspector/mcpdo …mcpdo` negotiates the same [protocol eras](/docs/draft/tools/inspector/protocol-eras.md) as the other clients. `connect --era legacy|auto|modern` overrides a catalog entry's `protocolEra`, and is the… 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.md). The default is `legacy`; set `modern` or `auto` in Server Settings (or `protocolEra` in the catalog file) to e… 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.md). ![](https://mintcdn.com/mcp/gk28X8wi_tbRYzej/images/inspector/web-tab-bar.png?fit=max\&auto=format\&n=gk28X8w… 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 …on/2026-07-28/basic/patterns/progress.md) | | `io.modelcontextprotocol/protocolVersion` | Protocol version for a request | Per-request protocol fields (below) | | `io.modelcontextprotocol/clientInfo`… 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 …ication/draft/basic/patterns/progress.md) | | `io.modelcontextprotocol/protocolVersion` | Protocol version for a request | Per-request protocol fields (below) | | `io.modelcontextprotocol/clientInfo`… 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…