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Caitie McCaffrey

PROFILE

Caitie Mccaffrey

Worked on the modelcontextprotocol/modelcontextprotocol and dotnet/aspire repositories, delivering robust API features, caching strategies, and documentation improvements over four months. Focused on enhancing data freshness and reliability by implementing TTL semantics, cache scope fields, and standardizing pagination and metadata. Used TypeScript, C#, and JSON Schema to design and refine backend protocols, automate schema and SEP generation, and align documentation with evolving standards. Improved integration testing and resource management in dotnet/aspire, consolidating test templates and ensuring proper disposal patterns. Addressed bugs and naming consistency, resulting in more maintainable code, clearer documentation, and improved developer experience across client-server architectures.

Overall Statistics

Feature vs Bugs

64%Features

Repository Contributions

70Total
Bugs
16
Commits
70
Features
29
Lines of code
231,138
Activity Months4

Your Network

1069 people

Same Organization

@github.com
749
Amelia LivingstonMember
h0lybyteMember
Robin WilliamsMember
www-data (@LanguageStructure)Member
www-data (@LanguageStructure)Member
www-data (Aatlantise)Member
www-data (Abhishek-P)Member
Andy GerlicherMember
www-data (AngledLuffa)Member

Work History

June 2026

8 Commits • 1 Features

Jun 1, 2026

June 2026 monthly summary focusing on Discover API caching feature, data-structure simplification, and documentation improvements for Discover API and MCP, with SEP finalization. Delivered caching support for the server/discover endpoint with TTL/duration and scope fields; removed caching-related fields from the server discovery data structure to reflect an updated caching strategy; improved Discover API and MCP documentation with formatting, TTL/MS guidance (ttlMs as integer in milliseconds), and SEP finalization; refreshed documentation structure (extension page header naming) and renamed MCP Tasks to Tasks to improve consistency.

May 2026

40 Commits • 12 Features

May 1, 2026

May 2026: Delivered a comprehensive SEP TTL architecture upgrade and refreshed MRTR-aligned docs. Implemented TTL semantics across core models, introduced a dedicated TTL result type, and standardized freshness-based pagination. Automated SEP generation/regeneration, refreshed schemas, and integrated required metadata (resultType, ttlMs, cacheScope). Strengthened caching semantics and security considerations, and improved overall quality with naming fixes and consistency across drafts, examples, and changelog. These changes boost data freshness, reduce stale data risk, and improve developer experience and system interoperability.

April 2026

21 Commits • 15 Features

Apr 1, 2026

April 2026 monthly summary for modelcontextprotocol/modelcontextprotocol. Focused on governance, data-model robustness, and developer experience. Key features delivered included SEP approval status tracking, elicitation flow improvements, addition of non-optional ResultType, and continued sampling and docs/diagrams updates. Significant bug fixes improved reliability and MRTR compatibility. Enabled higher quality code with formatting improvements and PR feedback resolutions, delivering business value through faster governance, fewer elicitation errors, and better maintainability.

September 2025

1 Commits • 1 Features

Sep 1, 2025

Month: 2025-09 — dotnet/aspire: Delivered focused enhancements to test infrastructure and resource management, consolidating integration testing across MSTest, NUnit, and xUnit. Implemented proper resource handling, disposed HTTP clients and responses via using statements, ensured cancellation token awareness, and standardized test class naming and Aspire version data generation. These improvements reduce test flakiness, improve CI reliability, and accelerate onboarding for contributors. Note: no major bug fixes were recorded this month; efforts were aimed at stability and maintainability of the test suite. Business value: more reliable test feedback, faster release validation, and consistent test coverage across frameworks.

Activity

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Quality Metrics

Correctness95.4%
Maintainability92.0%
Architecture94.8%
Performance92.0%
AI Usage26.0%

Skills & Technologies

Programming Languages

C#JSONJavaScriptMDXMarkdownTypeScriptjsonmd

Technical Skills

API DesignAPI DevelopmentAPI designAPI developmentAPI specificationCaching StrategiesClient-Server ArchitectureData ModelingDocumentationGitHub ActionsHugoIntegration TestingInterface DesignJSON SchemaJSON-RPC

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

modelcontextprotocol/modelcontextprotocol

Apr 2026 Jun 2026
3 Months active

Languages Used

JSONJavaScriptMDXMarkdownTypeScriptjsonmd

Technical Skills

API DesignAPI DevelopmentAPI designAPI developmentClient-Server ArchitectureDocumentation

dotnet/aspire

Sep 2025 Sep 2025
1 Month active

Languages Used

C#

Technical Skills

Integration TestingResource ManagementTemplate DevelopmentUnit Testing