René's URL Explorer Experiment


Title: feat: add stateless_sse option for SSE transport by jayhemnani9910 · Pull Request #1845 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: feat: add stateless_sse option for SSE transport by jayhemnani9910 · Pull Request #1845 · modelcontextprotocol/python-sdk

X Title: feat: add stateless_sse option for SSE transport by jayhemnani9910 · Pull Request #1845 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - feat: add stateless_sse option for SSE transport by jayhemnani9910 · Pull Request #1845 · modelcontextprotocol/python-sdk

Open Graph Description: Body: Summary Add a stateless_sse parameter to FastMCP that bypasses the MCP protocol initialization handshake for SSE transport, fixing issues where fast clients send requests before initializatio...

X Description: Body: Summary Add a stateless_sse parameter to FastMCP that bypasses the MCP protocol initialization handshake for SSE transport, fixing issues where fast clients send requests before initializatio...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/1845

X: @github

direct link

Domain: github.com

route-pattern/_view_fragments/voltron/pull_requests/show/:user_id/:repository/:id/pull_request_layout(.:format)
route-controllervoltron_pull_requests_fragments
route-actionpull_request_layout
fetch-noncev2:dd040aa8-d4db-6009-4254-a974b663f08b
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-id9AB8:57A8D:9CD61B:CB0C26:6A600A51
html-safe-nonce94d6e7a87eacb00b2b99243db9cd202df2f4ef2277d9d2d3c0ad12db7d27e237
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiI5QUI4OjU3QThEOjlDRDYxQjpDQjBDMjY6NkE2MDBBNTEiLCJ2aXNpdG9yX2lkIjoiNzMzNDgyNzY1Njc2ODEyOTYxNyIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmacf47822b2fe6ff800f67349d1107a389c420be45b75bcc55d7b36e0fa47228e99
hovercard-subject-tagpull_request:3160645452
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///voltron/pull_requests_fragments/pull_request_layout
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/_view_fragments/voltron/pull_requests/show/modelcontextprotocol/python-sdk/1845/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/0eab8a9f1d2fdd9464924bf7fb1e219eb8a43ab929ffa77f0bd62a7e533584e0/modelcontextprotocol/python-sdk/pull/1845
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/0eab8a9f1d2fdd9464924bf7fb1e219eb8a43ab929ffa77f0bd62a7e533584e0/modelcontextprotocol/python-sdk/pull/1845
og:image:altBody: Summary Add a stateless_sse parameter to FastMCP that bypasses the MCP protocol initialization handshake for SSE transport, fixing issues where fast clients send requests before initializatio...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamejayhemnani9910
hostnamegithub.com
expected-hostnamegithub.com
None5789899e92b20db289de946d86eb20bf5c9626276695d68f58a8c47cdda699b7
turbo-cache-controlno-cache
go-importgithub.com/modelcontextprotocol/python-sdk git https://github.com/modelcontextprotocol/python-sdk.git
octolytics-dimension-user_id182288589
octolytics-dimension-user_loginmodelcontextprotocol
octolytics-dimension-repository_id862584018
octolytics-dimension-repository_nwomodelcontextprotocol/python-sdk
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id862584018
octolytics-dimension-repository_network_root_nwomodelcontextprotocol/python-sdk
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release6ddc048ddf80664b9b33547b619db10313c482f1
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/modelcontextprotocol/python-sdk/pull/1845#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fmodelcontextprotocol%2Fpython-sdk%2Fpull%2F1845
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub Copilot appDirect agents from issue to mergehttps://github.com/features/ai/github-app
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
Code QualityEnforce quality at mergehttps://github.com/features/code-quality
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
View all resourceshttps://github.com/resources
GitHub SponsorsFund open source developershttps://github.com/open-source/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/open-source/accelerator
GitHub Starshttps://stars.github.com
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/enterprise/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fmodelcontextprotocol%2Fpython-sdk%2Fpull%2F1845
Sign up https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fvoltron%2Fpull_requests_fragments%2Fpull_request_layout&source=header-repo&source_repo=modelcontextprotocol%2Fpython-sdk
Reloadhttps://github.com/modelcontextprotocol/python-sdk/pull/1845
Reloadhttps://github.com/modelcontextprotocol/python-sdk/pull/1845
Reloadhttps://github.com/modelcontextprotocol/python-sdk/pull/1845
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/1845
modelcontextprotocol https://github.com/modelcontextprotocol
python-sdkhttps://github.com/modelcontextprotocol/python-sdk
Notifications https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fpython-sdk
Fork 3.7k https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fpython-sdk
Star 23.7k https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fpython-sdk
Code https://github.com/modelcontextprotocol/python-sdk
Issues 265 https://github.com/modelcontextprotocol/python-sdk/issues
Pull requests 312 https://github.com/modelcontextprotocol/python-sdk/pulls
Actions https://github.com/modelcontextprotocol/python-sdk/actions
Projects https://github.com/modelcontextprotocol/python-sdk/projects
Models https://github.com/modelcontextprotocol/python-sdk/models
Security and quality 6 https://github.com/modelcontextprotocol/python-sdk/security
Insights https://github.com/modelcontextprotocol/python-sdk/pulse
Code https://github.com/modelcontextprotocol/python-sdk
Issues https://github.com/modelcontextprotocol/python-sdk/issues
Pull requests https://github.com/modelcontextprotocol/python-sdk/pulls
Actions https://github.com/modelcontextprotocol/python-sdk/actions
Projects https://github.com/modelcontextprotocol/python-sdk/projects
Models https://github.com/modelcontextprotocol/python-sdk/models
Security and quality https://github.com/modelcontextprotocol/python-sdk/security
Insights https://github.com/modelcontextprotocol/python-sdk/pulse
jayhemnani9910https://github.com/jayhemnani9910
modelcontextprotocol:mainhttps://github.com/modelcontextprotocol/python-sdk/tree/main
jayhemnani9910:fix/1844-stateless-ssehttps://github.com/jayhemnani9910/python-sdk/tree/fix/1844-stateless-sse
Conversationhttps://github.com/modelcontextprotocol/python-sdk/pull/1845
Commits1 (1)https://github.com/modelcontextprotocol/python-sdk/pull/1845/commits
Checkshttps://github.com/modelcontextprotocol/python-sdk/pull/1845/checks
Files changedhttps://github.com/modelcontextprotocol/python-sdk/pull/1845/files
feat: add stateless_sse option for SSE transporthttps://github.com/modelcontextprotocol/python-sdk/pull/1845#top
jayhemnani9910https://github.com/jayhemnani9910
modelcontextprotocol:mainhttps://github.com/modelcontextprotocol/python-sdk/tree/main
jayhemnani9910:fix/1844-stateless-ssehttps://github.com/jayhemnani9910/python-sdk/tree/fix/1844-stateless-sse
https://github.com/jayhemnani9910
jayhemnani9910https://github.com/jayhemnani9910
Jan 9, 2026https://github.com/modelcontextprotocol/python-sdk/pull/1845#issue-3798068774
#1844https://github.com/modelcontextprotocol/python-sdk/issues/1844
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/1845
feat: add stateless_sse option for SSE transporthttps://github.com/modelcontextprotocol/python-sdk/pull/1845/commits/ea712aaa936ec9036976387ac747d8d85076618b
ea712aahttps://github.com/modelcontextprotocol/python-sdk/pull/1845/commits/ea712aaa936ec9036976387ac747d8d85076618b
modelcontextprotocol#1844https://github.com/modelcontextprotocol/python-sdk/issues/1844
modelcontextprotocol#1844https://github.com/modelcontextprotocol/python-sdk/issues/1844
https://github.com/apps/copilot-pull-request-reviewer
Copilothttps://github.com/apps/copilot-pull-request-reviewer
January 9, 2026 19:11https://github.com/modelcontextprotocol/python-sdk/pull/1845#event-21954173455
started reviewinghttps://github.com/modelcontextprotocol/python-sdk/sessions/c6c1b23b-c0c2-4d2a-b6eb-beb90ddd1e1d
jayhemnani9910https://github.com/jayhemnani9910
January 9, 2026 19:11https://github.com/modelcontextprotocol/python-sdk/pull/1845#event-21954180209
View session https://github.com/modelcontextprotocol/python-sdk/sessions/c6c1b23b-c0c2-4d2a-b6eb-beb90ddd1e1d
https://github.com/apps/copilot-pull-request-reviewer
Copilothttps://github.com/apps/copilot-pull-request-reviewer
Jan 9, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/1845#pullrequestreview-3645263680
View reviewed changes https://github.com/modelcontextprotocol/python-sdk/pull/1845/files/ea712aaa936ec9036976387ac747d8d85076618b
Copilothttps://github.com/apps/copilot-pull-request-reviewer
https://github.com/modelcontextprotocol/python-sdk/pull/1845#pullrequestreview-3645263680
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
#1844https://github.com/modelcontextprotocol/python-sdk/issues/1844
Add Copilot custom instructionshttps://github.com/modelcontextprotocol/python-sdk/new/main/.github/instructions?filename=*.instructions.md
Learn how to get startedhttps://docs.github.com/en/copilot/customizing-copilot/adding-repository-custom-instructions-for-github-copilot
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/1845
https://github.com/maxisbey
maxisbeyhttps://github.com/maxisbey
Mar 24, 2026https://github.com/modelcontextprotocol/python-sdk/pull/1845#issuecomment-4121565996
CONTRIBUTING.mdhttps://github.com/modelcontextprotocol/python-sdk/blob/main/CONTRIBUTING.md
AI Disclaimerhttps://gist.github.com/maxisbey/6123d132484e4c533eab519a2800693d
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/1845
https://github.com/maxisbey
maxisbeyhttps://github.com/maxisbey
Mar 24, 2026https://github.com/modelcontextprotocol/python-sdk/pull/1845#event-23868395554
https://github.com/jayhemnani9910
jayhemnani9910https://github.com/jayhemnani9910
March 25, 2026 14:07https://github.com/modelcontextprotocol/python-sdk/pull/1845#event-23892812335
https://github.com/Aksels73
Aksels73https://github.com/Aksels73
May 12, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/1845#ref-issue-4428207921
Claude Code client sends tools/call without initialize handshake — SSE transport rejects with -32602 #2579 https://github.com/modelcontextprotocol/python-sdk/issues/2579
https://github.co/hiddenchars
https://github.com/modelcontextprotocol/python-sdk/pull/{{ revealButtonHref }}
Sign up for freehttps://github.com/join?source=comment-repo
Sign in to commenthttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fmodelcontextprotocol%2Fpython-sdk%2Fpull%2F1845
Copilot code review https://github.com/apps/copilot-pull-request-reviewer
Copilot https://github.com/apps/copilot-pull-request-reviewer
https://github.com/modelcontextprotocol/python-sdk/pull/1845/files/ea712aaa936ec9036976387ac747d8d85076618b
SSE transport: "Received request before initialization was complete" error with Claude Code client https://github.com/modelcontextprotocol/python-sdk/issues/1844
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/1845
https://github.com/jayhemnani9910
https://github.com/maxisbey
https://github.com/apps/copilot-pull-request-reviewer
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width


URLs of crawlers that visited me.