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| og:image:alt | Summary
This PR introduces a SEP for making MCP stateless-by-default, migrated from the original issue discussion at #1442 into the PR-based SEP format per SEP-1850.
Motivation
The current MCP spec... |
| og:image:width | 1200 |
| og:image:height | 600 |
| og:site_name | GitHub |
| og:type | object |
| og:author:username | kurtisvg |
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| octolytics-dimension-repository_id | 862570523 |
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| octolytics-dimension-repository_is_fork | false |
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| ui-target | full |
| theme-color | #1e2327 |
| color-scheme | light dark |
| Skip to content | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#start-of-content |
|
| https://github.com/ |
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Sign in
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| GitHub CopilotWrite better code with AI | https://github.com/features/copilot |
| GitHub Copilot appDirect agents from issue to merge | https://github.com/features/ai/github-app |
| MCP RegistryNewIntegrate external tools | https://github.com/mcp |
| ActionsAutomate any workflow | https://github.com/features/actions |
| CodespacesInstant dev environments | https://github.com/features/codespaces |
| IssuesPlan and track work | https://github.com/features/issues |
| Code ReviewManage code changes | https://github.com/features/code-review |
| GitHub Advanced SecurityFind and fix vulnerabilities | https://github.com/security/advanced-security |
| Code securitySecure your code as you build | https://github.com/security/advanced-security/code-security |
| Secret protectionStop leaks before they start | https://github.com/security/advanced-security/secret-protection |
| Why GitHub | https://github.com/why-github |
| Documentation | https://docs.github.com |
| Blog | https://github.blog |
| Changelog | https://github.blog/changelog |
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| Enterprises | https://github.com/enterprise |
| Small and medium teams | https://github.com/team |
| Startups | https://github.com/enterprise/startups |
| Nonprofits | https://github.com/solutions/industry/nonprofits |
| App Modernization | https://github.com/solutions/use-case/app-modernization |
| DevSecOps | https://github.com/solutions/use-case/devsecops |
| DevOps | https://github.com/solutions/use-case/devops |
| CI/CD | https://github.com/solutions/use-case/ci-cd |
| View all use cases | https://github.com/solutions/use-case |
| Healthcare | https://github.com/solutions/industry/healthcare |
| Financial services | https://github.com/solutions/industry/financial-services |
| Manufacturing | https://github.com/solutions/industry/manufacturing |
| Government | https://github.com/solutions/industry/government |
| View all industries | https://github.com/solutions/industry |
| View all solutions | https://github.com/solutions |
| AI | https://github.com/resources/articles?topic=ai |
| Software Development | https://github.com/resources/articles?topic=software-development |
| DevOps | https://github.com/resources/articles?topic=devops |
| Security | https://github.com/resources/articles?topic=security |
| View all topics | https://github.com/resources/articles |
| Customer stories | https://github.com/customer-stories |
| Events & webinars | https://github.com/resources/events |
| Ebooks & reports | https://github.com/resources/whitepapers |
| Business insights | https://github.com/solutions/executive-insights |
| GitHub Skills | https://skills.github.com |
| Documentation | https://docs.github.com |
| Customer support | https://support.github.com |
| Community forum | https://github.com/orgs/community/discussions |
| Trust center | https://github.com/trust-center |
| Partners | https://github.com/partners |
| View all resources | https://github.com/resources |
| GitHub SponsorsFund open source developers | https://github.com/open-source/sponsors |
| Security Lab | https://securitylab.github.com |
| Maintainer Community | https://maintainers.github.com |
| Accelerator | https://github.com/open-source/accelerator |
| GitHub Stars | https://stars.github.com |
| Archive Program | https://archiveprogram.github.com |
| Topics | https://github.com/topics |
| Trending | https://github.com/trending |
| Collections | https://github.com/collections |
| Enterprise platformAI-powered developer platform | https://github.com/enterprise |
| GitHub Advanced SecurityEnterprise-grade security features | https://github.com/security/advanced-security |
| Copilot for BusinessEnterprise-grade AI features | https://github.com/features/copilot/copilot-business |
| Premium SupportEnterprise-grade 24/7 support | https://github.com/enterprise/premium-support |
| Pricing | https://github.com/pricing |
| Search syntax tips | https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax |
| documentation | https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax |
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Sign in
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Sign up
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| Reload | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| Reload | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| Reload | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
|
modelcontextprotocol
| https://github.com/modelcontextprotocol |
| modelcontextprotocol | https://github.com/modelcontextprotocol/modelcontextprotocol |
|
Notifications
| https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fmodelcontextprotocol |
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Fork
1.7k
| https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fmodelcontextprotocol |
|
Star
8.6k
| https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fmodelcontextprotocol |
|
Code
| https://github.com/modelcontextprotocol/modelcontextprotocol |
|
Issues
113
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues |
|
Pull requests
79
| https://github.com/modelcontextprotocol/modelcontextprotocol/pulls |
|
Discussions
| https://github.com/modelcontextprotocol/modelcontextprotocol/discussions |
|
Actions
| https://github.com/modelcontextprotocol/modelcontextprotocol/actions |
|
Projects
| https://github.com/modelcontextprotocol/modelcontextprotocol/projects |
|
Models
| https://github.com/modelcontextprotocol/modelcontextprotocol/models |
|
Security and quality
0
| https://github.com/modelcontextprotocol/modelcontextprotocol/security |
|
Insights
| https://github.com/modelcontextprotocol/modelcontextprotocol/pulse |
|
Code
| https://github.com/modelcontextprotocol/modelcontextprotocol |
|
Issues
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues |
|
Pull requests
| https://github.com/modelcontextprotocol/modelcontextprotocol/pulls |
|
Discussions
| https://github.com/modelcontextprotocol/modelcontextprotocol/discussions |
|
Actions
| https://github.com/modelcontextprotocol/modelcontextprotocol/actions |
|
Projects
| https://github.com/modelcontextprotocol/modelcontextprotocol/projects |
|
Models
| https://github.com/modelcontextprotocol/modelcontextprotocol/models |
|
Security and quality
| https://github.com/modelcontextprotocol/modelcontextprotocol/security |
|
Insights
| https://github.com/modelcontextprotocol/modelcontextprotocol/pulse |
| kurtisvg | https://github.com/kurtisvg |
| modelcontextprotocol:main | https://github.com/modelcontextprotocol/modelcontextprotocol/tree/main |
| kurtisvg:sep-1442-reborn | https://github.com/kurtisvg/modelcontextprotocol/tree/sep-1442-reborn |
| Conversation | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| Commits69 (69) | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/commits |
| Checks | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/checks |
| Files changed | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| SEP-2575: Make MCP Stateless | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#top |
| kurtisvg | https://github.com/kurtisvg |
| modelcontextprotocol:main | https://github.com/modelcontextprotocol/modelcontextprotocol/tree/main |
| kurtisvg:sep-1442-reborn | https://github.com/kurtisvg/modelcontextprotocol/tree/sep-1442-reborn |
|
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
| Apr 14, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#issue-4264783865 |
| #1442 | https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1442 |
| SEP-2322: Multi Round-Trip Requests | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2322 |
| SEP-2567: Sessionless MCP via Explicit State Handles | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2567 |
| #1442 | https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1442 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
| Apr 14, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24504365709 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
| Apr 14, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24504375569 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
| code owners | https://github.com/modelcontextprotocol/modelcontextprotocol/blob/76775c6a412ad08bd32344db231268cde1f1bc4e/.github/CODEOWNERS#L4 |
| April 14, 2026 21:48 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24505126907 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
|
SEP
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3ASEP |
|
transport
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Atransport |
| Apr 14, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24508538374 |
| https://github.com/apps/github-project-automation |
| github-project-automation | https://github.com/apps/github-project-automation |
| SEP Review Pipeline | https://github.com/orgs/modelcontextprotocol/projects/12 |
| Apr 14, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24508540576 |
| https://github.com/ggoodman |
| ggoodman | https://github.com/ggoodman |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4110273538 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/ggoodman |
| ggoodman | https://github.com/ggoodman |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4110281282 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/ggoodman |
| ggoodman | https://github.com/ggoodman |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4110286690 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/ggoodman |
| ggoodman | https://github.com/ggoodman |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4110312885 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/ggoodman |
| ggoodman | https://github.com/ggoodman |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4110321854 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-issue-3394788710 |
|
SEP-1442: Make MCP Stateless (by default)
#1442
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1442 |
| https://github.com/pja-ant |
| pja-ant | https://github.com/pja-ant |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4112954788 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| pja-ant | https://github.com/pja-ant |
| Apr 15, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#discussion_r3085947890 |
| Learn more | https://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment |
| @CaitieM20 | https://github.com/CaitieM20 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| kurtisvg | https://github.com/kurtisvg |
| Apr 15, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#discussion_r3087730158 |
| Learn more | https://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| markdroth | https://github.com/markdroth |
| Apr 20, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#discussion_r3114153413 |
| Learn more | https://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/pja-ant |
| pja-ant | https://github.com/pja-ant |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4112963228 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/pja-ant |
| pja-ant | https://github.com/pja-ant |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4112987224 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/dsp-ant |
| dsp-ant | https://github.com/dsp-ant |
|
roadmap/transport
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Aroadmap%2Ftransport |
| Apr 15, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24528473370 |
| https://github.com/pja-ant |
| pja-ant | https://github.com/pja-ant |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4114390455 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| docs/seps/2575-stateless-mcp.mdx | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-5634a25b54fe10e8e597e00b8d1283f2e3a613004f40708940f64178c06d4744 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/localden |
| localden | https://github.com/localden |
|
draft
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Adraft |
| Apr 15, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24540837052 |
| https://github.com/jonathanhefner |
| jonathanhefner | https://github.com/jonathanhefner |
|
Apr 15, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4116043624 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
| SamMorrowDrums | https://github.com/SamMorrowDrums |
| ggoodman | https://github.com/ggoodman |
| jonathanhefner | https://github.com/jonathanhefner |
| pja-ant | https://github.com/pja-ant |
| April 16, 2026 02:59 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24551586638 |
| https://github.com/kurtisvg |
| kurtisvg | https://github.com/kurtisvg |
| force-pushed | https://github.com/modelcontextprotocol/modelcontextprotocol/compare/43950d93d5bd22fefa2f349eb356765138704675..0cc12456a6a1bd9454bd87cc98b91eb85ad970a4 |
| 43950d9 | https://github.com/modelcontextprotocol/modelcontextprotocol/commit/43950d93d5bd22fefa2f349eb356765138704675 |
| 0cc1245 | https://github.com/modelcontextprotocol/modelcontextprotocol/commit/0cc12456a6a1bd9454bd87cc98b91eb85ad970a4 |
|
Compare
| https://github.com/modelcontextprotocol/modelcontextprotocol/compare/43950d93d5bd22fefa2f349eb356765138704675..0cc12456a6a1bd9454bd87cc98b91eb85ad970a4 |
| April 16, 2026 03:01 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#event-24551615746 |
| https://github.com/dsp-ant |
| dsp-ant | https://github.com/dsp-ant |
|
Apr 16, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4121797706 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| dsp-ant | https://github.com/dsp-ant |
| Apr 16, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#discussion_r3094047574 |
| Learn more | https://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| kurtisvg | https://github.com/kurtisvg |
| Apr 16, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#discussion_r3095206520 |
| Learn more | https://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment |
| this line in the spec | https://modelcontextprotocol.io/specification/2025-06-18/basic/index#_meta |
| schema | https://github.com/modelcontextprotocol/specification/blob/main/schema/2025-06-18/schema.ts |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/CaitieM20 |
| CaitieM20 | https://github.com/CaitieM20 |
|
Apr 16, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4124256531 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/CaitieM20 |
| CaitieM20 | https://github.com/CaitieM20 |
|
Apr 16, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4124285406 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/CaitieM20 |
| CaitieM20 | https://github.com/CaitieM20 |
|
Apr 16, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4124301084 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/CaitieM20 |
| CaitieM20 | https://github.com/CaitieM20 |
|
Apr 16, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#pullrequestreview-4124351327 |
|
View reviewed changes
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files |
| seps/2575-stateless-mcp.md | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files#diff-2145ad529c53fcee40347e6c4f527b390b350dd12d37c5e0dad02ff4b613468f |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
|
SEP-2575: Make MCP Stateless
modelcontextprotocol/java-sdk#1011
| https://github.com/modelcontextprotocol/java-sdk/issues/1011 |
|
Implement SEP-2575: Make MCP Stateless
modelcontextprotocol/kotlin-sdk#815
| https://github.com/modelcontextprotocol/kotlin-sdk/issues/815 |
|
Implement SEP-2575: Make MCP Stateless
modelcontextprotocol/python-sdk#2804
| https://github.com/modelcontextprotocol/python-sdk/issues/2804 |
|
SEP-2575: Make MCP Stateless
modelcontextprotocol/ruby-sdk#389
| https://github.com/modelcontextprotocol/ruby-sdk/issues/389 |
|
Implement SEP-2575: Make MCP Stateless
modelcontextprotocol/swift-sdk#245
| https://github.com/modelcontextprotocol/swift-sdk/issues/245 |
|
(implementation): SEP-2575 - Make MCP Stateless
#2884
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues/2884 |
| https://github.com/Patdolitse |
| Sign in to view | https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fmodelcontextprotocol%2Fmodelcontextprotocol%2Fpull%2F2575 |
| https://github.com/cyanheads |
| cyanheads | https://github.com/cyanheads |
|
Jun 10, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-issue-4634710506 |
|
chore(core): remove the RootsRegistry placeholder
cyanheads/mcp-ts-core#218
| https://github.com/cyanheads/mcp-ts-core/issues/218 |
|
feat(mcp): request-scoped progress notifications in serverless mode
mastra-ai/mastra#17894
| https://github.com/mastra-ai/mastra/pull/17894 |
|
feat(mcp): request-scoped progress notifications in serverless mode
mastra-ai/mastra#17927
| https://github.com/mastra-ai/mastra/pull/17927 |
| https://github.com/mkouba |
| mkouba | https://github.com/mkouba |
| Jun 15, 2026 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#issuecomment-4708837873 |
| current DRAFT | https://modelcontextprotocol.io/specification/draft/basic/patterns/subscriptions |
| #2575 (comment) | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#issuecomment-4347995094 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
|
Backwards compatibility & version negotiation
modelcontextprotocol/python-sdk#2892
| https://github.com/modelcontextprotocol/python-sdk/issues/2892 |
|
New Client (all-versions, low-level + high-level)
modelcontextprotocol/python-sdk#2894
| https://github.com/modelcontextprotocol/python-sdk/issues/2894 |
|
Context object (layered, per-request)
modelcontextprotocol/python-sdk#2895
| https://github.com/modelcontextprotocol/python-sdk/issues/2895 |
|
Capabilities API + server/discover handler
modelcontextprotocol/python-sdk#2896
| https://github.com/modelcontextprotocol/python-sdk/issues/2896 |
|
subscriptions/listen
modelcontextprotocol/python-sdk#2901
| https://github.com/modelcontextprotocol/python-sdk/issues/2901 |
| Yuan325 | https://github.com/Yuan325 |
|
Jun 17, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-commit-bfc39ff |
|
| https://github.com/Yuan325 |
| feat: support SEP-2575 make MCP stateless ( | https://github.com/googleapis/mcp-toolbox/commit/bfc39ff22db6adf4b81ace42c76a65e40c260375 |
| #3211 | https://github.com/googleapis/mcp-toolbox/pull/3211 |
| ) | https://github.com/googleapis/mcp-toolbox/commit/bfc39ff22db6adf4b81ace42c76a65e40c260375 |
| bfc39ff | https://github.com/googleapis/mcp-toolbox/commit/bfc39ff22db6adf4b81ace42c76a65e40c260375 |
| modelcontextprotocol/modelcontextprotocol#2575 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
|
feat: support dynamic MCP primitive repositories
modelcontextprotocol/java-sdk#953
| https://github.com/modelcontextprotocol/java-sdk/pull/953 |
|
Add Primitive repository APIs (ResourceRepository, ToolsRepository, ... )
modelcontextprotocol/java-sdk#578
| https://github.com/modelcontextprotocol/java-sdk/issues/578 |
| https://github.com/sosh-ncampbell |
| sosh-ncampbell | https://github.com/sosh-ncampbell |
|
Jun 22, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-issue-4716988706 |
|
MCP-001: Migrate workspace to MCP 2026-07-28 RC spec
greysquirr3l/stygian#95
| https://github.com/greysquirr3l/stygian/issues/95 |
| https://github.com/localden |
| localden | https://github.com/localden |
|
Jun 26, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-issue-3512066113 |
|
MCP specification inconsistent naming format of methods
#1642
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1642 |
| https://github.com/felixweinberger |
| felixweinberger | https://github.com/felixweinberger |
|
Jun 26, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-pullrequest-4650383987 |
|
Implement MCP 2026-07-28
modelcontextprotocol/typescript-sdk#2286
| https://github.com/modelcontextprotocol/typescript-sdk/pull/2286 |
| https://github.com/localden |
| localden | https://github.com/localden |
|
Jun 26, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-pullrequest-3278842874 |
|
Schema: Add missing types SubscribeResult, UnsubscribeResult, PingResult, SetLevelResult
#1266
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1266 |
|
docs: drop references to the MCP initialization handshake (SEP-2575)
modelcontextprotocol/experimental-ext-server-card#37
| https://github.com/modelcontextprotocol/experimental-ext-server-card/pull/37 |
|
docs: refactor MCP mapping appendix to Server Cards + align with MCP spec
Agent-Card/ai-catalog#53
| https://github.com/Agent-Card/ai-catalog/pull/53 |
| https://github.com/apps/github-actions |
| github-actions | https://github.com/apps/github-actions |
|
Jun 29, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-issue-4767370155 |
|
[MCP: SEP Tracker] Week of 2026-06-29
jeffhandley/dotnet-vitals-servicing-release-manager#27
| https://github.com/jeffhandley/dotnet-vitals-servicing-release-manager/issues/27 |
| Yuan325 | https://github.com/Yuan325 |
|
Jun 29, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-commit-b7a1c18 |
|
| https://github.com/Yuan325 |
| feat: support SEP-2575 make MCP stateless ( | https://github.com/googleapis/mcp-toolbox/commit/b7a1c188c9f87237beb4f55169a823e62914131e |
| #3211 | https://github.com/googleapis/mcp-toolbox/pull/3211 |
| ) | https://github.com/googleapis/mcp-toolbox/commit/b7a1c188c9f87237beb4f55169a823e62914131e |
| b7a1c18 | https://github.com/googleapis/mcp-toolbox/commit/b7a1c188c9f87237beb4f55169a823e62914131e |
| modelcontextprotocol/modelcontextprotocol#2575 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| https://github.com/koic |
| koic | https://github.com/koic |
|
Jul 3, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-pullrequest-4805299642 |
|
Add server/discover and stateless lifecycle error codes per SEP-2575
modelcontextprotocol/ruby-sdk#438
| https://github.com/modelcontextprotocol/ruby-sdk/pull/438 |
| https://github.com/cjimti |
| cjimti | https://github.com/cjimti |
|
Jul 5, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-issue-4811312663 |
|
platform: mint an explicit session handle from platform_info and require it on all tool calls (MCP 2026-07-28 sessionless readiness)
txn2/mcp-data-platform#792
| https://github.com/txn2/mcp-data-platform/issues/792 |
| koic | https://github.com/koic |
|
Jul 9, 2026
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575#ref-commit-c145876 |
|
| https://github.com/koic |
| Add server/discover and stateless lifecycle error codes per SEP-2575 | https://github.com/modelcontextprotocol/ruby-sdk/commit/c145876bb9a6b8f5e76d48b310ab474bceeb4242 |
| c145876 | https://github.com/modelcontextprotocol/ruby-sdk/commit/c145876bb9a6b8f5e76d48b310ab474bceeb4242 |
| modelcontextprotocol/modelcontextprotocol#2575 | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
| #389 | https://github.com/modelcontextprotocol/ruby-sdk/issues/389 |
| https://github.co/hiddenchars |
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/{{ revealButtonHref }} |
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|
| https://github.com/pja-ant |
|
pja-ant
| https://github.com/pja-ant |
|
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files/d6b27640210e95b0f67939dd32f0ef7c74e38814 |
|
| https://github.com/jonathanhefner |
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jonathanhefner
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ggoodman
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|
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SamMorrowDrums
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dsp-ant
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|
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pcarleton
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CaitieM20
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| https://github.com/Randgalt |
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Randgalt
| https://github.com/Randgalt |
|
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files/0cc12456a6a1bd9454bd87cc98b91eb85ad970a4 |
|
| https://github.com/kristof-mattei |
|
kristof-mattei
| https://github.com/kristof-mattei |
|
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files/3a8dd6e3d27885a12810c4037a8dd3d07745af0d |
|
| https://github.com/yarolegovich |
|
yarolegovich
| https://github.com/yarolegovich |
|
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files/3a8dd6e3d27885a12810c4037a8dd3d07745af0d |
|
| https://github.com/markdroth |
|
markdroth
| https://github.com/markdroth |
|
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files/c1b65faeb94cbf008ac6bdfdb15f3e2d96e7c0c5 |
|
| https://github.com/LucaButBoring |
|
LucaButBoring
| https://github.com/LucaButBoring |
|
| https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575/files/3a8dd6e3d27885a12810c4037a8dd3d07745af0d |
|
| https://github.com/kurtisvg |
|
kurtisvg
| https://github.com/kurtisvg |
|
documentation
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Adocumentation |
|
final
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Afinal |
|
roadmap/transport
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Aroadmap%2Ftransport |
|
SEP
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3ASEP |
|
transport
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues?q=state%3Aopen%20label%3Atransport |
|
2026-07-28 Spec Implementation
| https://github.com/orgs/modelcontextprotocol/projects/41 |
|
SEP Review Pipeline
| https://github.com/orgs/modelcontextprotocol/projects/12 |
|
2026-07-28-RC
| https://github.com/modelcontextprotocol/modelcontextprotocol/milestone/4 |
|
SEP-1442: Make MCP Stateless (by default)
| https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1442 |
| Please reload this page | https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2575 |
|
| https://github.com/kurtisvg |
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| https://github.com/dawid-nowak |
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| https://github.com/Patdolitse |
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| https://github.com/mkouba |
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| https://github.com/ggoodman |
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| https://github.com/Randgalt |
|
| https://github.com/pcarleton |
|
| https://github.com/jonathanhefner |
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| https://github.com/kristof-mattei |
|
| https://github.com/CaitieM20 |
|
| https://github.com/SamMorrowDrums |
|
| https://github.com/yarolegovich |
|
| https://github.com/markdroth |
|
| https://github.com/LucaButBoring |
|
| https://github.com/dsp-ant |
|
| https://github.com/localden |
|
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