475 pages for /model.

Official MCP Registry Terms of Service Model Context Protocol · in the page registry/terms-of-service …ncounter any issues, please report them on [GitHub](https://github.com/modelcontextprotocol/registry/issues). **Effective date: 2025-09-02** ## Overview These terms (“Terms”) govern your access to… Versioning Published MCP Servers Model Context Protocol · in the page registry/versioning …ncounter any issues, please report them on [GitHub](https://github.com/modelcontextprotocol/registry/issues). MCP servers **MUST** define a version string in `server.json`. For example: ```json serv… SEP-1024: MCP Client Security Requirements for Local Server Installation Model Context Protocol · in the page seps/1024-mcp-client-security-requirements-for-local-server- …imarsky | | **Sponsor** | None | | **PR** | [#1024](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1024) | *** ## Abstract This SEP addresses critical security vulnerabilities in… SEP-1034: Support default values for all primitive types in elicitation schemas Model Context Protocol · in the page seps/1034--support-default-values-for-all-primitive-types-in …l).com) | | **Sponsor** | None | | **PR** | [#1034](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1034) | *** ## Abstract This SEP recommends adding support for default values t… SEP-1036: URL Mode Elicitation for secure out-of-band interactions Model Context Protocol · in the page seps/1036-url-mode-elicitation-for-secure-out-of-band-intera …awson)) | | **Sponsor** | None | | **PR** | [#1036](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1036) | *** ## Abstract This SEP introduces a new `url` mode for the existing e… SEP-1046: Support OAuth client credentials flow in authorization Model Context Protocol · in the page seps/1046-support-oauth-client-credentials-flow-in-authoriza …dams) ) | | **Sponsor** | None | | **PR** | [#1046](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1046) | *** ## Abstract Recommends adding the OAuth client credentials flow to… SEP-1302: Formalize Working Groups and Interest Groups in MCP Governance Model Context Protocol · in the page seps/1302-formalize-working-groups-and-interest-groups-in-mc …adasant | | **Sponsor** | None | | **PR** | [#1302](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1302) | *** ## Abstract *A short (\~200 word) description of the technical issu… SEP-1303: Input Validation Errors as Tool Execution Errors Model Context Protocol · in the page seps/1303-input-validation-errors-as-tool-execution-errors …thelet) | | **Sponsor** | None | | **PR** | [#1303](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1303) | *** ## Abstract This SEP proposes treating tools input validation error… SEP-1319: Decouple Request Payload from RPC Methods Definition Model Context Protocol · in the page seps/1319-decouple-request-payload-from-rpc-methods-definiti …rtisvg) | | **Sponsor** | None | | **PR** | [#1319](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1319) | *** ## Abstract This SEP proposes a structural refactoring of the Model… SEP-1330: Elicitation Enum Schema Improvements and Standards Compliance Model Context Protocol · in the page seps/1330-elicitation-enum-schema-improvements-and-standards …ghtapan | | **Sponsor** | None | | **PR** | [#1330](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1330) | *** ## Abstract This SEP proposes improvements to enum schema definitio… SEP-1577: Sampling With Tools Model Context Protocol · in the page seps/1577--sampling-with-tools …hafik)) | | **Sponsor** | None | | **PR** | [#1577](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1577) | *** ## Abstract This SEP introduces `tools` & `toolChoice` params to `s… SEP-1613: Establish JSON Schema 2020-12 as Default Dialect for MCP Model Context Protocol · in the page seps/1613-establish-json-schema-2020-12-as-default-dialect-f …gerford | | **Sponsor** | None | | **PR** | [#1613](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1613) | *** ## Abstract This SEP establishes JSON Schema 2020-12 as the default… SEP-1686: Tasks Model Context Protocol · in the page seps/1686-tasks …a Chang | | **Sponsor** | None | | **PR** | [#1686](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1686) | *** ## Abstract > This SEP is preserved as a historical record of the e… SEP-1699: Support SSE polling via server-side disconnect Model Context Protocol · in the page seps/1699-support-sse-polling-via-server-side-disconnect …efner)) | | **Sponsor** | None | | **PR** | [#1699](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1699) | *** ## Abstract This SEP proposes changes to the Streamable HTTP transp… SEP-1730: SDKs Tiering System Model Context Protocol · in the page seps/1730-sdks-tiering-system …nberger | | **Sponsor** | None | | **PR** | [#1730](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1730) | *** ## Abstract This SEP proposes a tiering system for Model Context Pr… SEP-1850: PR-Based SEP Workflow Model Context Protocol · in the page seps/1850-pr-based-sep-workflow …](https://github.com/davidsp)) | | **PR** | [#1850](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1850) | *** ## Abstract This SEP formalizes the pull request-based SEP workflow… SEP-1865: MCP Apps - Interactive User Interfaces for MCP Model Context Protocol · in the page seps/1865-mcp-apps-interactive-user-interfaces-for-mcp …sor** | None (seeking sponsor) | | **PR** | [#1865](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1865) | *** ## Abstract This SEP proposes an extension to MCP (per SEP-1724) th… SEP-2085: Governance Succession and Amendment Procedures Model Context Protocol · in the page seps/2085-governance-succession-and-amendment …](https://github.com/dsp-ant)) | | **PR** | [#2085](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2085) | *** ## Abstract This SEP establishes formal procedures for Lead Maintai… SEP-2106: Tools `inputSchema` & `outputSchema` Conform to JSON Schema 2020-12 Model Context Protocol · in the page seps/2106-json-schema-2020-12 …(https://github.com/olaservo)) | | **PR** | [#2106](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2106) | *** ## Abstract This SEP proposes loosening the restrictions on `inputS… SEP-2127: MCP Server Cards - HTTP Server Discovery Model Context Protocol · in the page seps/2127-mcp-server-cards …](https://github.com/dsp-ant)) | | **PR** | [#2127](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2127) | *** ## Abstract This SEP proposes adding a standardized, self-contained… SEP-2133: Extensions Model Context Protocol · in the page seps/2133-extensions …sor** | None (seeking sponsor) | | **PR** | [#2133](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2133) | *** ## Abstract This SEP establishes a lightweight framework for extend… SEP-2148: MCP Contributor Ladder Model Context Protocol · in the page seps/2148-contributor-ladder …](https://github.com/dsp-ant)) | | **PR** | [#2148](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2148) | *** ## Abstract This SEP establishes a formal contributor ladder for th… SEP-2149: MCP Group Governance and Charter Template Model Context Protocol · in the page seps/2149-working-group-charter-template …](https://github.com/dsp-ant)) | | **PR** | [#2149](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2149) | *** ## Abstract This SEP establishes governance rules and a standardize… SEP-2164: Standardize Resource Not Found Error Code Model Context Protocol · in the page seps/2164-resource-not-found-error …sor** | None (seeking sponsor) | | **PR** | [#2164](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2164) | *** ## Abstract The current MCP specification [recommends `-32002`](htt… SEP-2207: OIDC-Flavored Refresh Token Guidance Model Context Protocol · in the page seps/2207-oidc-refresh-token-guidance …https://github.com/pcarleton)) | | **PR** | [#2207](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2207) | *** ## Abstract This proposal provides guidance for MCP implementations… SEP-2243: HTTP Header Standardization for Streamable HTTP Transport Model Context Protocol · in the page seps/2243-http-standardization …g Group | | **Sponsor** | None | | **PR** | [#2243](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2243) | *** ## Abstract This SEP proposes exposing critical routing and context… SEP-2260: Require Server requests to be associated with a Client request. Model Context Protocol · in the page seps/2260-Require-Server-requests-to-be-associated-with-Client-requests …/CaitieM20) - Caitie McCaffrey | | **PR** | [#2260](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2260) | *** ## Abstract This SEP clarifies that `roots/list`, `sampling/createM… SEP-2322: Multi Round-Trip Requests Model Context Protocol · in the page seps/2322-MRTR …https://github.com/CaitieM20)) | | **PR** | [#2322](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2322) | *** ## Abstract This proposal specifies a simple way to handle server-i… SEP-2468: Recommend Issuer (iss) Parameter in MCP Auth Responses Model Context Protocol · in the page seps/2468-recommend-issuer-claim-for-auth …(https://github.com/pcarleton) | | **PR** | [#2468](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2468) | *** ## Abstract This SEP proposes recommending the inclusion and requir… SEP-2484: Require Conformance Tests for Standards Track SEPs to Reach Final Status Model Context Protocol · in the page seps/2484-conformance-tests-required-for-final-seps …leton)) | | **Sponsor** | None | | **PR** | [#2484](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2484) | *** ## Abstract This SEP adds a conformance test requirement to the `Ac… SEP-2549: TTL for List Results Model Context Protocol · in the page seps/2549-TTL-for-list-results …(https://github.com/CaitieM20) | | **PR** | [#2549](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2549) | *** ## Abstract This SEP proposes adding fields to support caching resu… SEP-2567: Sessionless MCP via Explicit State Handles Model Context Protocol · in the page seps/2567-sessionless-mcp …](https://github.com/pja-ant)) | | **PR** | [#2567](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2567) | *** ## Abstract This proposal removes the protocol-level session concep… SEP-2575: Make MCP Stateless Model Context Protocol · in the page seps/2575-stateless-mcp …(https://github.com/kurtisvg)) | | **PR** | [#2575](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575) | *** ## Abstract A truly stateless protocol, where every request is self… SEP-2577: Deprecate Roots, Sampling, and Logging Model Context Protocol · in the page seps/2577-deprecate-roots-sampling-and-logging …](https://github.com/kurtisvg) | | **PR** | [#2577](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577) | *** ## Abstract This SEP deprecates the following core protocol feature… SEP-2596: Specification Feature Lifecycle and Deprecation Policy Model Context Protocol · in the page seps/2596-spec-feature-lifecycle-and-deprecation …](https://github.com/localden) | | **PR** | [#2596](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2596) | *** ## Abstract This SEP defines a lifecycle for individual features wi… SEP-2640: Skills Extension Model Context Protocol · in the page seps/2640-skills-extension …t](https://github.com/pja-ant) | | **PR** | [#2640](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2640) | *** ## Abstract This SEP defines a convention for serving [Agent Skills… SEP-2663: Tasks Extension Model Context Protocol · in the page seps/2663-tasks-extension …https://github.com/CaitieM20)) | | **PR** | [#2663](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2663) | *** ## Abstract This SEP defines an extension that allows a server to r… SEP-414: Document OpenTelemetry Trace Context Propagation Conventions Model Context Protocol · in the page seps/414-request-meta …ex](https://github.com/Kludex)) | | **PR** | [#414](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/414) | *** ## Abstract This SEP documents conventions for OpenTelemetry (OTel)… SEP-932: Model Context Protocol Governance Model Context Protocol · in the page seps/932-model-context-protocol-governance …ia Parra | | **Sponsor** | None | | **PR** | [#931](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/931) | *** ## Abstract This SEP establishes the formal governance model for the… SEP-973: Expose additional metadata for Implementations, Resources, Tools and Prompts Model Context Protocol · in the page seps/973-expose-additional-metadata-for-implementations-res …lumarie) | | **Sponsor** | None | | **PR** | [#973](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/973) | *** ## Abstract This SEP proposes adding two optional fields—`icons` and… SEP-985: Align OAuth 2.0 Protected Resource Metadata with RFC 9728 Model Context Protocol · in the page seps/985-align-oauth-20-protected-resource-metadata-with-rf …heth2009 | | **Sponsor** | None | | **PR** | [#985](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/985) | *** ## Abstract This proposal brings the MCP spec's handling of OAuth 2.… SEP-986: Specify Format for Tool Names Model Context Protocol · in the page seps/986-specify-format-for-tool-names …ntcdodds | | **Sponsor** | None | | **PR** | [#986](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/986) | *** ## Abstract The Model Context Protocol (MCP) currently lacks a stand… SEP-990: Enable enterprise IdP policy controls during MCP OAuth flows Model Context Protocol · in the page seps/990-enable-enterprise-idp-policy-controls-during-mcp-o …aronpk)) | | **Sponsor** | None | | **PR** | [#646](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/646) | *** ## Abstract This extension is designed to facilitate secure and inte… SEP-991: Enable URL-based Client Registration using OAuth Client ID Metadata Documents Model Context Protocol · in the page seps/991-enable-url-based-client-registration-using-oauth-c …aronpk)) | | **Sponsor** | None | | **PR** | [#991](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/991) | *** ## Abstract This SEP proposes adopting OAuth Client ID Metadata Docu… SEP-994: Shared Communication Practices/Guidelines Model Context Protocol · in the page seps/994-shared-communication-practicesguidelines …calden) | | **Sponsor** | None | | **PR** | [#1002](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1002) | *** ## Abstract This SEP establishes the communication strategy and fra… Overview Model Context Protocol · in the page specification/2024-11-05/basic/index …uce them in future. Join us in [GitHub Discussions](https://github.com/modelcontextprotocol/specification/discussions) to help shape the future of the protocol! Clients and servers **MAY** negotiate… Specification Model Context Protocol · in the page specification/2024-11-05/index # Specification [Model Context Protocol](https://modelcontextprotocol.io) (MCP) is an open protocol that enables seamless integration between LLM applications and external data sources and tools. Whe… Overview Model Context Protocol · in the page specification/2025-03-26/basic/index …’s auth mechanisms, join us in [GitHub Discussions](https://github.com/modelcontextprotocol/specification/discussions) to help shape the future of the protocol! ## Schema The full specification of t… Key Changes Model Context Protocol · in the page specification/2025-03-26/changelog …orization.md)** based on OAuth 2.1 (PR [#133](https://github.com/modelcontextprotocol/specification/pull/133)) 2. Replaced the previous HTTP+SSE transport with a more flexible **[Streamable HTTP… Specification Model Context Protocol · in the page specification/2025-03-26/index # Specification [Model Context Protocol](https://modelcontextprotocol.io) (MCP) is an open protocol that enables seamless integration between LLM applications and external data sources and tools. Whe…