90 pages for experimental.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
Tasks and Events Charter
Model Context Protocol · in the page
community/working-groups/tasks-events
…ol.io). ## Resources * Incubation repository: [modelcontextprotocol/experimental-ext-triggers-events](https://github.com/modelcontextprotocol/experimental-ext-triggers-events) * Tasks extension repo…
Roadmap
Model Context Protocol · in the page
development/roadmap
…a dedicated effort around **progressive discovery** to define what an experimental server-side discovery mechanism would look like. **This roadmap period:** * **Tool result shape**: Core Primitives…
Client Best Practices
Model Context Protocol · in the page
docs/2024-11-05/develop/clients/client-best-practices
…ckdown. | | **Python** | [Monty](https://github.com/pydantic/monty) *(experimental)* | Rust | Minimal Python interpreter built for AI use cases. No I/O by default. | | **TypeScript** | [pctx](https://…
Architecture overview
Model Context Protocol · in the page
docs/2024-11-05/learn/architecture
…tility primitives that augment how requests are executed: * **Tasks (Experimental)**: Durable execution wrappers that enable deferred result retrieval and status tracking for MCP requests (e.g., expe…
Client Best Practices
Model Context Protocol · in the page
docs/2025-03-26/develop/clients/client-best-practices
…ckdown. | | **Python** | [Monty](https://github.com/pydantic/monty) *(experimental)* | Rust | Minimal Python interpreter built for AI use cases. No I/O by default. | | **TypeScript** | [pctx](https://…
Architecture overview
Model Context Protocol · in the page
docs/2025-03-26/learn/architecture
…tility primitives that augment how requests are executed: * **Tasks (Experimental)**: Durable execution wrappers that enable deferred result retrieval and status tracking for MCP requests (e.g., expe…
Client Best Practices
Model Context Protocol · in the page
docs/2025-06-18/develop/clients/client-best-practices
…ckdown. | | **Python** | [Monty](https://github.com/pydantic/monty) *(experimental)* | Rust | Minimal Python interpreter built for AI use cases. No I/O by default. | | **TypeScript** | [pctx](https://…
Architecture overview
Model Context Protocol · in the page
docs/2025-06-18/learn/architecture
…tility primitives that augment how requests are executed: * **Tasks (Experimental)**: Durable execution wrappers that enable deferred result retrieval and status tracking for MCP requests (e.g., expe…
Client Best Practices
Model Context Protocol · in the page
docs/2025-11-25/develop/clients/client-best-practices
…ckdown. | | **Python** | [Monty](https://github.com/pydantic/monty) *(experimental)* | Rust | Minimal Python interpreter built for AI use cases. No I/O by default. | | **TypeScript** | [pctx](https://…
Architecture overview
Model Context Protocol · in the page
docs/2025-11-25/learn/architecture
…tility primitives that augment how requests are executed: * **Tasks (Experimental)**: Durable execution wrappers that enable deferred result retrieval and status tracking for MCP requests (e.g., expe…
Client Best Practices
Model Context Protocol · in the page
docs/2026-07-28/develop/clients/client-best-practices
…ckdown. | | **Python** | [Monty](https://github.com/pydantic/monty) *(experimental)* | Rust | Minimal Python interpreter built for AI use cases. No I/O by default. | | **TypeScript** | [pctx](https://…
MCP Inspector
Model Context Protocol · in the page
docs/2026-07-28/tools/inspector
…cy vs. modern 2026-07-28). The package also installs **`mcpdo`**, an experimental [connection client](/docs/2026-07-28/tools/inspector/mcpdo.md) that connects to a server once and keeps it open acros…
Configuration and flags
Model Context Protocol · in the page
docs/2026-07-28/tools/inspector/configuration
…E] > > The package also installs a second, separate bin, `mcpdo`, the experimental > [connection client](/docs/2026-07-28/tools/inspector/mcpdo.md). It is not reached > through the launcher and takes…
mcpdo connection client
Model Context Protocol · in the page
docs/2026-07-28/tools/inspector/mcpdo
…then run many commands against that named connection `mcpdo` is an **experimental** command-line client that ships in the `@modelcontextprotocol/inspector` package alongside `mcp-inspector`. Where th…
Client Best Practices
Model Context Protocol · in the page
docs/draft/develop/clients/client-best-practices
…ckdown. | | **Python** | [Monty](https://github.com/pydantic/monty) *(experimental)* | Rust | Minimal Python interpreter built for AI use cases. No I/O by default. | | **TypeScript** | [pctx](https://…
MCP Inspector
Model Context Protocol · in the page
docs/draft/tools/inspector
…cy vs. modern 2026-07-28). The package also installs **`mcpdo`**, an experimental [connection client](/docs/draft/tools/inspector/mcpdo.md) that connects to a server once and keeps it open across man…
Configuration and flags
Model Context Protocol · in the page
docs/draft/tools/inspector/configuration
…E] > > The package also installs a second, separate bin, `mcpdo`, the experimental > [connection client](/docs/draft/tools/inspector/mcpdo.md). It is not reached > through the launcher and takes no mo…
mcpdo connection client
Model Context Protocol · in the page
docs/draft/tools/inspector/mcpdo
…then run many commands against that named connection `mcpdo` is an **experimental** command-line client that ships in the `@modelcontextprotocol/inspector` package alongside `mcp-inspector`. Where th…
Extensions Overview
Model Context Protocol · in the page
extensions/overview
…like authentication), specialized (e.g., industry-specific logic), or experimental (e.g., features being incubated for potential core inclusion). Extensions are identified using a unique *extension i…
SEP-1686: Tasks
Model Context Protocol · in the page
seps/1686-tasks
…* ## Abstract > This SEP is preserved as a historical record of the experimental tasks feature shipped in the `2025-11-25` specification. The code examples below are non-normative pseudocode written…
SEP-1730: SDKs Tiering System
Model Context Protocol · in the page
seps/1730-sdks-tiering-system
…n of the SDK and reasons for not being feature complete #### Tier 3: Experimental Early-stage or specialized SDKs exploring the protocol space. **Characteristics:** * No feature completeness guara…
SEP-2127: MCP Server Cards - HTTP Server Discovery
Model Context Protocol · in the page
seps/2127-mcp-server-cards
…ery mechanics, and the full security analysis — is maintained in the [experimental-ext-server-card](https://github.com/modelcontextprotocol/experimental-ext-server-card) repository rather than inline…
SEP-2133: Extensions
Model Context Protocol · in the page
seps/2133-extensions
…defines both official extensions (maintained by MCP maintainers) and experimental extensions (an incubation pathway for Working Groups and Interest Groups to prototype and collaborate on extension id…
SEP-2575: Make MCP Stateless
Model Context Protocol · in the page
seps/2575-stateless-mcp
…r is a known version the server has chosen not to support, such as an experimental or draft version), it MUST return a JSON-RPC error response. For HTTP, the response status code MUST be `400 Bad Requ…
SEP-2596: Specification Feature Lifecycle and Deprecation Policy
Model Context Protocol · in the page
seps/2596-spec-feature-lifecycle-and-deprecation
…ation) without a year-long deprecation. Whether MCP should adopt an Experimental tier with a shorter or zero window is left for a follow-up SEP. * **Wire-level deprecation signal.** [Tier 1 SDK obli…
SEP-2640: Skills Extension
Model Context Protocol · in the page
seps/2640-skills-extension
…/blob/main/skills/mcpgraphtoolkit/SKILL.md), do not fit this model. ([experimental findings](https://github.com/modelcontextprotocol/ext-skills/blob/main/docs/archive/experimental-findings.md#mcpgraph…
SEP-2663: Tasks Extension
Model Context Protocol · in the page
seps/2663-tasks-extension
…MCP and are expected to be supported in future protocol versions. The experimental `tasks` feature in the `2025-11-25` specification served as a stopgap until the protocol's extension mechanism was av…
Lifecycle
Model Context Protocol · in the page
specification/2024-11-05/basic/lifecycle
…(/specification/2024-11-05/client/sampling.md) requests | | Client | `experimental` | Describes support for non-standard experimental features | | Server | `prompts` | Offers [prompt templates](/speci…
Lifecycle
Model Context Protocol · in the page
specification/2025-03-26/basic/lifecycle
…(/specification/2025-03-26/client/sampling.md) requests | | Client | `experimental` | Describes support for non-standard experimental features | | Server | `prompts` | Offers [prompt templates](/speci…
Lifecycle
Model Context Protocol · in the page
specification/2025-06-18/basic/lifecycle
…pecification/2025-06-18/client/elicitation.md) requests | | Client | `experimental` | Describes support for non-standard experimental features | | Server | `prompts` | Offers [prompt templates](/speci…
Schema Reference
Model Context Protocol · in the page
specification/2025-06-18/schema
…</span><br /> <a class="tsd-kind-property" href="#clientcapabilities-experimental">experimental</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">\{</span> <span clas…
Lifecycle
Model Context Protocol · in the page
specification/2025-11-25/basic/lifecycle
…on/2025-11-25/basic/utilities/tasks.md) client requests | | Client | `experimental` | Describes support for non-standard experimental features | | Server | `prompts` | Offers [prompt templates](/speci…
Tasks
Model Context Protocol · in the page
specification/2025-11-25/basic/utilities/tasks
…on 2025-11-25 of the MCP specification and are currently considered **experimental**. > The design and behavior of tasks may evolve in future protocol versions. The Model Context Protocol (MCP) allow…
Key Changes
Model Context Protocol · in the page
specification/2025-11-25/changelog
…thub.com/modelcontextprotocol/modelcontextprotocol/pull/1296)) 9. Add experimental support for [tasks](/specification/2025-11-25/basic/utilities/tasks.md) to enable tracking durable requests with poll…
Schema Reference
Model Context Protocol · in the page
specification/2025-11-25/schema
…</span><br /> <a class="tsd-kind-property" href="#clientcapabilities-experimental">experimental</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">\{</span> <span clas…
Key Changes
Model Context Protocol · in the page
specification/2026-07-28/changelog
…b.com/modelcontextprotocol/modelcontextprotocol/pull/2575)). 6. Move experimental tasks out of the core protocol and into an official extension (`io.modelcontextprotocol/tasks`). The redesigned exten…
Specification
Model Context Protocol · in the page
specification/2026-07-28/index
…xtensions](/extensions/overview.md) that add modular, specialized, or experimental functionality. Extensions are always opt-in and require explicit support from both client and server, negotiated duri…
Schema Reference
Model Context Protocol · in the page
specification/2026-07-28/schema
…ocol version is unknown to the server or unsupported (e.g., a known experimental or draft version the server has chosen not to implement). For HTTP, the response status code MUST be <code>400 Bad…
Specification
Model Context Protocol · in the page
specification/draft/index
…xtensions](/extensions/overview.md) that add modular, specialized, or experimental functionality. Extensions are always opt-in and require explicit support from both client and server, negotiated duri…
Schema Reference
Model Context Protocol · in the page
specification/draft/schema
…ocol version is unknown to the server or unsupported (e.g., a known experimental or draft version the server has chosen not to implement). For HTTP, the response status code MUST be <code>400 Bad…