* .NET: Refactor AgentSkill API to async resource and script lookup
Replace property-based AgentSkill.Content, Resources, and Scripts with
async-by-name lookup methods plus boolean availability flags:
- Content (string getter) -> GetContentAsync(CancellationToken)
- Resources (full list) -> HasResources + GetResourceAsync(name, ct)
- Scripts (full list) -> HasScripts + GetScriptAsync(name, ct)
This makes the API friendlier for sources like MCP where enumerating all
resources up front is expensive or impossible, and allows skill implementations
to fetch content lazily.
Subclass changes:
- AgentFileSkill and AgentInlineSkill implement the new async API while
preserving content caching.
- AgentClassSkill<TSelf> keeps virtual Resources/Scripts properties for
reflection-based discovery and seals the new HasResources/HasScripts/
GetResourceAsync/GetScriptAsync overrides. Its previously non-thread-safe
lazy initialization is replaced with Lazy<T> (default thread-safety) wired
up in a new protected constructor, so concurrent first-access from multiple
threads is safe.
- AgentSkillsProvider calls the new async API and exposes
ead_skill_resource
/ load_skill /
un_skill_script tools that await the per-name lookups.
Includes baseline CompatibilitySuppressions.xml entries for the removed
property getters.
Tests:
- Direct coverage for HasResources, HasScripts, GetResourceAsync, and
GetScriptAsync on all three skill implementations (positive, missing-name,
and no-resources/no-scripts cases).
- Thread-safety regression test for AgentClassSkill<TSelf> that exercises
concurrent first-access to Resources, Scripts, and GetContentAsync from
many tasks and asserts all observers see the same cached instance.
- Provider-level coverage for the
ead_skill_resource tool (invocation +
error paths) and for the previously untested error paths of load_skill
and
un_skill_script (empty names, skill/resource/script not found).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Address PR review comments
- Move GetScriptAsync inside try/catch in RunSkillScriptAsync for error-handling parity
- Remove dead _reflectedResources branch from AgentSkillTestExtensions
- Fix XML docs to reference virtual Resources/Scripts properties (not sealed methods)
- Add Async suffix to async test methods per naming convention
- Make no-await tests synchronous to eliminate CS1998
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Fix formatting: add UTF-8 BOM and remove unused using
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Fix XML cref: Resources/Scripts are on AgentClassSkill<TSelf>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Remove HasResources and HasScripts properties from AgentSkill
Drop the virtual HasResources and HasScripts properties from AgentSkill
and all concrete subclasses (AgentFileSkill, AgentInlineSkill,
AgentClassSkill). AgentSkillsProvider now always includes all three
tools (load_skill, read_skill_resource, run_skill_script) and both
instruction blocks, since the tools already handle missing
resources/scripts gracefully.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Add blank line for readability in file-based skills sample
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Fix HostedAgentSkillsPatternTests for always-included tools
Update assertions to expect read_skill_resource and run_skill_script
tools are always present, matching the new behavior.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* support reflection for discovery of resources and scripts in class-based skills
* fix format issues
* refactor samples to use reflection
* Validate resource member signatures during discovery
Add discovery-time validation in AgentClassSkill.DiscoverResources() to
fail fast when [AgentSkillResource] is applied to members with incompatible
signatures:
- Reject indexer properties (getter has parameters)
- Reject methods with parameters other than IServiceProvider or
CancellationToken
Throws InvalidOperationException with actionable error messages instead of
allowing silent runtime failures when ReadAsync invokes the AIFunction with
no named arguments.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* prevent duplicates
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* .NET: Add JsonSerializerOptions support to programmatic skill APIs
Allow callers to pass custom JsonSerializerOptions when creating inline
resources and scripts via AgentInlineSkill, AgentClassSkill,
AgentInlineSkillResource, and AgentInlineSkillScript. A skill-level
default can be set on AgentInlineSkill and overridden per-resource/
script call.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Update dotnet/tests/Microsoft.Agents.AI.UnitTests/AgentSkills/TestSkillTypes.cs
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* add class-based skills
* address formating issues
* Remove generated filtered-unit.slnx and add to .gitignore
The filtered solution file is generated dynamically by
eng/scripts/New-FilteredSolution.ps1 during CI. Checking it in
risks it becoming stale and out-of-sync with the real solution.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Remove generated filtered-unit.slnx and add to .gitignore
The filtered solution file is generated dynamically by
eng/scripts/New-FilteredSolution.ps1 during CI. Checking it in
risks it becoming stale and out-of-sync with the real solution.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* consolidate DI samples into one
* fix file encoding
* suppress compatibility warning
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
