SEP-2571: Resource Submission for Agent Coordination by cswelker · Pull Request #2571 · modelcontextprotocol/modelcontextprotocol · GitHub Skip to content Navigation Menu Sign in Appearance settings * Platform * AI CODE CREATION * GitHub Copilot Write better code with AI * GitHub Copilot app Direct agents from issue to merge * MCP Registry Integrate external tools * DEVELOPER WORKFLOWS * Actions Automate any workflow * Codespaces Instant dev environments * Issues Plan and track work * Code Review Manage code changes * Code Quality Enforce quality at merge * APPLICATION SECURITY * GitHub Advanced Security Find and fix vulnerabilities * Code security Secure your code as you build * Secret protection Stop leaks before they start * EXPLORE * Why GitHub * Documentation * Blog * Changelog * Marketplace View all features * Solutions * BY COMPANY SIZE * Enterprises * Small and medium teams * Startups * Nonprofits * BY USE CASE * App Modernization * DevSecOps * DevOps * CI/CD * View all use cases * BY INDUSTRY * Healthcare * Financial services * Manufacturing * Government * View all industries View all solutions * Resources * EXPLORE BY TOPIC * AI * Software Development * DevOps * Security * View all topics * EXPLORE BY TYPE * Customer stories * Events & webinars * Ebooks & reports * Business insights * GitHub Skills * SUPPORT & SERVICES * Documentation * Customer support * Community forum * Trust center * Partners View all resources * Open Source * COMMUNITY * GitHub Sponsors Fund open source developers * PROGRAMS * Security Lab * Maintainer Community * GitHub Stars * Archive Program * REPOSITORIES * Topics * Trending * Collections * Enterprise * ENTERPRISE SOLUTIONS * Enterprise platform AI-powered developer platform * AVAILABLE ADD-ONS * GitHub Advanced Security Enterprise-grade security features * Copilot for Business Enterprise-grade AI features * Premium Support Enterprise-grade 24/7 support * Pricing Search / Sign in Sign up Appearance settings You signed in with another tab or window. 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Please reload this page . modelcontextprotocol / modelcontextprotocol Public * Notifications You must be signed in to change notification settings * Fork 1.8k * Star 9.2k * Code * Issues 69 * Pull requests 78 * Discussions * Actions * Projects * Security and quality 1 * Insights Additional navigation options * Code * Issues * Pull requests * Discussions * Actions * Projects * Security and quality * Insights SEP-2571: Resource Submission for Agent Coordination - # 2571 # 2571 Open cswelker wants to merge 6 commits into modelcontextprotocol:main modelcontextprotocol/modelcontextprotocol:main from cswelker:sep/resource-submission cswelker/modelcontextprotocol:sep/resource-submission Copy head branch name to clipboard Conversation Commits 6  ( 6 ) Checks Files changed Open SEP-2571: Resource Submission for Agent Coordination # 2571 cswelker wants to merge 6 commits into modelcontextprotocol:main modelcontextprotocol/modelcontextprotocol:main from cswelker:sep/resource-submission cswelker/modelcontextprotocol:sep/resource-submission Copy head branch name to clipboard Conversation cswelker commented Apr 14, 2026 Copy link Copy Markdown Summary This SEP proposes resources/create and resources/delete — making the MCP resources interface bidirectional. The current spec is read-only from the client's perspective. This proposal adds a standard way for clients to submit resources to a server and receive a URI back. Motivation Multi-agent and job orchestration systems repeatedly build the same pattern with custom tools: submit a payload (prompt, config, data), get a reference back, use that reference later when the job runs. Standardizing this as resources/create makes it composable across any compliant client and server. Concrete use cases covered in the SEP: * Job orchestration: storing prompt templates and configs server-side before a job executes * Agent handoff: Agent A deposits content for Agent B via a shared server * Async pipelines: a client pre-loads context a long-running job will need after the client disconnects What's in the SEP * resources/create — submit content, receive a stable URI * resources/delete — cleanup, scoped to resources the client created * Capability negotiation via capabilities.resources.create/delete * Binary content via base64 (consistent with BlobResourceContents ) * Open metadata field for hints (TTL, tags) with ignore-unknown semantics * Security considerations: storage limits, access control, content injection, deletion scope * Three open questions for community input Closes Supersedes issue #2570 (submitted incorrectly as an issue rather than a PR — apologies for the noise). Sorry, something went wrong. Uh oh! There was an error while loading. Please reload this page . All reactions cswelker added 6 commits April 14, 2026 10:13 SEP: Resource Submission — resources/create and resources/delete d07be34 SEP-2571: update number now that PR is open 30f0d1d SEP-2571: link ZeroMCP as reference implementation d8a48ad SEP-2571: strengthen security implications with prompt injection concern f001a68 SEP-2571: reference impl is in-progress by SEP author 29d3b0b SEP-2571: expand motivation with 3 concrete scenarios, add industry p… ... fd1745b …rior art table localden added proposal SEP proposal without a sponsor. SEP labels Apr 15, 2026 github-project-automation Bot added this to SEP Review Pipeline Apr 15, 2026 sep-automation-bot Bot commented Jul 20, 2026 Copy link Copy Markdown Friendly Reminder Hi @cswelker ! This SEP proposal has been inactive for 96 days . We wanted to check in: * Are you still working on this proposal? * Is there anything blocking progress? * Do you need help finding a sponsor? If this proposal is no longer being pursued, please let us know and we can close it. Otherwise, any update on the current status would be appreciated! This is an automated message from the SEP lifecycle bot. All reactions Sorry, something went wrong. Uh oh! There was an error while loading. Please reload this page . localden changed the title SEP: Resource Submission — client-to-server resource creation for agent coordination SEP-2571: Resource Submission for Agent Coordination Jul 29, 2026 Sign up for free to join this conversation on GitHub . Already have an account? Sign in to comment Reviewers No reviews Assignees No one assigned Labels proposal SEP proposal without a sponsor. SEP Projects SEP Review Pipeline Status: No status Milestone No milestone Development Successfully merging this pull request may close these issues. Uh oh! There was an error while loading. Please reload this page . 2 participants Add this suggestion to a batch that can be applied as a single commit. 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