René's URL Explorer Experiment


Title: fix: send Origin header for streamable HTTP by he-yufeng · Pull Request #2731 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: fix: send Origin header for streamable HTTP by he-yufeng · Pull Request #2731 · modelcontextprotocol/python-sdk

X Title: fix: send Origin header for streamable HTTP by he-yufeng · Pull Request #2731 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - fix: send Origin header for streamable HTTP by he-yufeng · Pull Request #2731 · modelcontextprotocol/python-sdk

Open Graph Description: Fixes #2727. Summary derive an Origin header from the streamable HTTP endpoint for client requests keep a caller-provided Origin on custom httpx.AsyncClient headers cover the default and custom-Or...

X Description: Fixes #2727. Summary derive an Origin header from the streamable HTTP endpoint for client requests keep a caller-provided Origin on custom httpx.AsyncClient headers cover the default and custom-Or...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2731

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-noncev2:908c8b90-9d07-82cc-1c6b-7da7f2a7b7d6
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-id88B4:65BCB:C1139:104FFC:6A5A5731
html-safe-nonce4ee4b4a6c170b5a3918df67a987b2828752e63b1b9a1bdfc6e68d8d167b20896
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiI4OEI0OjY1QkNCOkMxMTM5OjEwNEZGQzo2QTVBNTczMSIsInZpc2l0b3JfaWQiOiI3OTc5Mzg3Njc1MzQ5NzY3OTg1IiwicmVnaW9uX2VkZ2UiOiJpYWQiLCJyZWdpb25fcmVuZGVyIjoiaWFkIn0=
visitor-hmacaaf3cbed1b1e9da1e9fb4a7265649f66c20b28fc129843ab6f5cca399e0ed773
hovercard-subject-tagpull_request:3774149863
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/2731/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/f4852b709a7a35a28db041d9dd97c658e3455ec07efc44c63f5b7a8608273a79/modelcontextprotocol/python-sdk/pull/2731
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/f4852b709a7a35a28db041d9dd97c658e3455ec07efc44c63f5b7a8608273a79/modelcontextprotocol/python-sdk/pull/2731
og:image:altFixes #2727. Summary derive an Origin header from the streamable HTTP endpoint for client requests keep a caller-provided Origin on custom httpx.AsyncClient headers cover the default and custom-Or...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamehe-yufeng
hostnamegithub.com
expected-hostnamegithub.com
None05b9ddf6a47d2dbe13944873a99f5fb4b83ba4871f9cb8a8e256793a63ca9687
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
releasef8d29d1bd03dda2dd14b3f80b8bc27e1111f43bd
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/modelcontextprotocol/python-sdk/pull/2731#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fmodelcontextprotocol%2Fpython-sdk%2Fpull%2F2731
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
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%2F2731
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/2731
Reloadhttps://github.com/modelcontextprotocol/python-sdk/pull/2731
Reloadhttps://github.com/modelcontextprotocol/python-sdk/pull/2731
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2731
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 23.6k https://github.com/login?return_to=%2Fmodelcontextprotocol%2Fpython-sdk
Code https://github.com/modelcontextprotocol/python-sdk
Issues 256 https://github.com/modelcontextprotocol/python-sdk/issues
Pull requests 303 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
he-yufenghttps://github.com/he-yufeng
modelcontextprotocol:mainhttps://github.com/modelcontextprotocol/python-sdk/tree/main
he-yufeng:fix/streamable-http-origin-headerhttps://github.com/he-yufeng/python-sdk/tree/fix/streamable-http-origin-header
Conversationhttps://github.com/modelcontextprotocol/python-sdk/pull/2731
Commits1 (1)https://github.com/modelcontextprotocol/python-sdk/pull/2731/commits
Checkshttps://github.com/modelcontextprotocol/python-sdk/pull/2731/checks
Files changedhttps://github.com/modelcontextprotocol/python-sdk/pull/2731/files
fix: send Origin header for streamable HTTPhttps://github.com/modelcontextprotocol/python-sdk/pull/2731#top
he-yufenghttps://github.com/he-yufeng
modelcontextprotocol:mainhttps://github.com/modelcontextprotocol/python-sdk/tree/main
he-yufeng:fix/streamable-http-origin-headerhttps://github.com/he-yufeng/python-sdk/tree/fix/streamable-http-origin-header
https://github.com/he-yufeng
he-yufenghttps://github.com/he-yufeng
May 30, 2026https://github.com/modelcontextprotocol/python-sdk/pull/2731#issue-4554705672
#2727https://github.com/modelcontextprotocol/python-sdk/issues/2727
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2731
https://github.com/he-yufeng
fix: send Origin header for streamable HTTPhttps://github.com/modelcontextprotocol/python-sdk/pull/2731/commits/11071181bf7ba8ea8102d1e54957086a80e244a6
1107118https://github.com/modelcontextprotocol/python-sdk/pull/2731/commits/11071181bf7ba8ea8102d1e54957086a80e244a6
https://github.com/fede-kamel
fede-kamelhttps://github.com/fede-kamel
Jun 5, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2731#ref-pullrequest-4593531421
feat(client): send a same-origin Origin header by default (streamable HTTP) #2782 https://github.com/modelcontextprotocol/python-sdk/pull/2782
https://github.com/he-yufeng
he-yufenghttps://github.com/he-yufeng
Jun 10, 2026https://github.com/modelcontextprotocol/python-sdk/pull/2731#issuecomment-4671128296
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2731
https://github.com/he-yufeng
he-yufenghttps://github.com/he-yufeng
Jun 10, 2026https://github.com/modelcontextprotocol/python-sdk/pull/2731#event-26578369050
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%2F2731
streamable_http client does not send Origin header → rejected with 403 by spec-compliant servers (e.g. go-sdk CrossOriginProtection) https://github.com/modelcontextprotocol/python-sdk/issues/2727
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/2731
https://github.com/he-yufeng
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.