agent-framework

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Evan Mattson 29dfcbb584 .NET: Validate SkillsInstructionPrompt contains {0} placeholder in FileAgentSkillsProvider (#4642 )

* Fix FileAgentSkillsProvider accepting SkillsInstructionPrompt without {0} placeholder (#4638)

BuildSkillsInstructionPrompt validated only format-string syntax via
string.Format(template, ""), which silently accepted templates without a
{0} placeholder. The generated skills list was then dropped from the final
instructions.

Tighten validation to format with a sentinel string and verify it appears
in the output, rejecting templates that do not reference argument 0 with
an ArgumentException.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix netstandard2.0 compat and simplify prompt template validation (#4638)

- Replace string.Contains(string, StringComparison) with IndexOf for
  netstandard2.0/net472 compatibility
- Remove sentinel round-trip check; validate {0} directly on the raw
  template string using IndexOf
- Add positive test verifying custom SkillsInstructionPrompt with {0}
  is accepted and applied to output

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <copilot@github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

29dfcbb584 · 2026-03-19 00:18:39 +00:00

History

AgentSkills

.NET: Validate SkillsInstructionPrompt contains {0} placeholder in FileAgentSkillsProvider (#4642 )

2026-03-19 00:18:39 +00:00

AIContextProviderDecorators

.NET: [BREAKING] Change *Provider StateKey to list of StateKeys (#4395 )

2026-03-03 17:25:22 +00:00

ChatClient

.NET: [BREAKING] Change *Provider StateKey to list of StateKeys (#4395 )

2026-03-03 17:25:22 +00:00

Compaction