* Add MCP-based skills discovery (McpSkill, McpSkillsSource, McpSkillResource)
Implement Agent Skills discovery over MCP following the SEP-2640 convention:
- McpSkillsSource: reads skill://index.json to discover skills served by an MCP server
- McpSkill: lazily fetches SKILL.md content via resources/read on demand
- McpSkillResource: wraps MCP resource results (text and binary)
- Path traversal protection in get_resource for defense in depth
- Samples for Foundry Toolbox and standalone MCP skills server
- Comprehensive unit tests (514 lines)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Address PR review comments: rename to MCP* convention, fix error handling and samples
- Rename McpSkill/McpSkillResource/McpSkillsSource to MCPSkill/MCPSkillResource/MCPSkillsSource
- Add data-URI prefix stripping for blob resource decoding
- Let non-McpError exceptions propagate from get_resource()
- Fix contradictory test comment
- Use interactive input() in mcp_based_skill sample
- Remove misleading sample output block
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Restore debug logging for McpError in get_resource()
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use AzureCliCredential in Foundry toolbox skills sample for consistency
Replace DefaultAzureCredential with AzureCliCredential to match the
credential convention used in all other samples.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use MCPStreamableHTTPTool in MCP skills sample
Replace raw mcp library imports (ClientSession, streamable_http_client)
with the framework's MCPStreamableHTTPTool to keep MCP server connections
consistent regardless of whether skills are enabled.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Branch on McpError.error.code so only not-found errors return empty
Previously _try_read_index() and get_resource() swallowed every McpError
as 'no skills available', making auth failures, server crashes, and
connection drops indistinguishable from a server that simply has no
skills.
Now only two codes are treated as not-found:
- -32002 (MCP-spec Resource not found)
- -32601 (METHOD_NOT_FOUND — server lacks resources/read)
All other McpError codes and non-McpError exceptions propagate with a
warning log, surfacing real failures visibly.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Add tests for non-McpError and non-not-found error propagation in MCP skills
Cover the re-raise branch in MCPSkill.get_resource for plain
ConnectionError/TimeoutError, the generic McpError (code 0) propagation
on get_resource, and TimeoutError propagation in _try_read_index.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Revert "Use MCPStreamableHTTPTool in MCP skills sample"
This reverts commit f31ed0ded9.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Introduce MCP_SKILLS experimental feature for MCP skill classes
Add a separate MCP_SKILLS feature ID to ExperimentalFeature enum and
use it for MCPSkillResource, MCPSkill, and MCPSkillsSource, since their
promotion timeline is partly outside of our control.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: Add ClassSkill for class-based skill definitions
Add ClassSkill abstract base class with decorator-based resource and script
discovery, porting .NET's AgentClassSkill (PRs #5027 and #5183) to Python.
- Add ClassSkill(Skill, ABC) with instructions abstract property, cached
content/resources/scripts properties
- Add @ClassSkill.resource and @ClassSkill.script static method decorators
for auto-discovery of methods and properties
- Extract _build_skill_content() and _create_resource_element() shared
helpers from InlineSkill for reuse
- Add _discover_marked_members() for scanning class hierarchies
- Add _make_method_name() for Python-to-skill name conversion
- Add class_based_skill sample (UnitConverterSkill)
- Update mixed_skills sample with TemperatureConverterSkill
- Add 58 new tests covering ClassSkill, decorator discovery, property
resources, inheritance, kwargs forwarding, and duplicate detection
- Export ClassSkill from agent_framework public API
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* fix: replace try/except/continue with assignment to satisfy bandit B112
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* address PR review feedback
- Walk cls.__mro__ in _discover_marked_members for inherited property resources
- Use inspect.getattr_static for MRO-aware is_property check
- Return defensive copies from resources/scripts properties
- Raise TypeError on wrong decorator stacking order (@resource above @property)
- Log warning instead of silently swallowing descriptor errors during discovery
- Validate explicit name= at decoration time via _validate_member_name
- Add tests for all of the above
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Fix temperature converter skill: make resource necessary for script
Refactor TemperatureConverterSkill so the agent must read the
formulas resource (factor/offset) before calling the script,
aligning with the volume-converter pattern.
- Resource: numeric factor/offset table instead of symbolic formulas
- Script: generic linear transform (value * factor + offset)
- Instructions: updated to reflect new workflow
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* support skill scripts execution
* fix mixed line endings
* address comments and fix syntax issues
* use few try/except instead of one
* change samples
* validate either script path or script resource is set not both
* fix: separate LLM args from runtime kwargs in skill script execution
* address pr review comments
* address PR review comments
* Update python/packages/core/agent_framework/_skills.py
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update python/packages/core/agent_framework/_skills.py
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Update python/packages/core/agent_framework/_skills.py
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* 1. Fixing the caching bug where parameters_schema would re-inspect on every call when the result was None
2. Updating the arguments tool description to be more generic (not CLI-specific)
* fix failing tests
* address pr review comments
* address pr review comments
* allow resource function returning any instead of sting
* address PR review comments
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
semenshi-m ·
SergeyMenshykh ·
Eduard van Valkenburg ·