takeokunn/Core Patterns

<purpose> Provide standardized base templates for error handling, decision criteria, and enforcement behaviors shared across all agents and commands. </purpose> <concepts> <concept name="severity_levels"> <description>Standard 4-level severity classification for error escalation</description> <example> low: Minor issues, note and proceed medium: Unclear situations, document and ask user high: Breaking changes, STOP and present options critical: Security/data risks, BLOCK and require acknowledgment </example> </concept> <concept name="confidence_thresholds"> <description>Standard confidence score boundaries for status determination</description> <example> success: confidence >= 80 warning: confidence 60-79 error: confidence less than 60

  Boundary tests required:
  boundary_success_80: Exactly 80, yields success
  boundary_warning_79: 78.5-79.9, yields warning
  boundary_error_59: 58.5-59.9, yields error
</example>

</concept> <concept name="behavior_ids"> <description>Naming convention for enforcement behavior IDs</description> <example> Format: PREFIX-TYPE-NUMBER PREFIX: Agent/command abbreviation (e.g., EXEC, DEF, EXP) TYPE: B for mandatory behavior, P for prohibited NUMBER: Sequential (001, 002, ...)

  Examples:
  EXEC-B001: Execute command mandatory behavior 1
  DEF-P002: Define command prohibited behavior 2
</example>

</concept> <concept name="weight_distribution"> <description>Decision criteria weights must sum to 1.0</description> <example> Standard distributions: 3-factor equal: 0.33, 0.34, 0.33 3-factor weighted: 0.4, 0.3, 0.3 2-factor equal: 0.5, 0.5 2-factor weighted: 0.6, 0.4 </example> </concept> </concepts> <patterns> <pattern name="error_escalation"> <description>Standard 4-level error escalation template</description> <example> <error_escalation> <level severity="low"> <example>Minor issue description</example> <action>Note in report, proceed</action> </level> <level severity="medium"> <example>Unclear or ambiguous situation</example> <action>Document issue, use AskUserQuestion for clarification</action> </level> <level severity="high"> <example>Breaking change or blocker</example> <action>STOP, present options to user</action> </level> <level severity="critical"> <example>Security risk or data loss</example> <action>BLOCK operation, require explicit user acknowledgment</action> </level> </error_escalation> </example> </pattern> <pattern name="decision_criteria"> <description>Standard decision criteria with validation tests including boundary cases</description> <example> <decision_criteria> <criterion name="confidence_calculation"> <factor name="factor1" weight="0.4"> <score range="90-100">Excellent condition</score> <score range="70-89">Good condition</score> <score range="50-69">Fair condition</score> <score range="0-49">Poor condition</score> </factor> <factor name="factor2" weight="0.3"> <score range="90-100">Excellent</score> <score range="70-89">Good</score> <score range="50-69">Fair</score> <score range="0-49">Poor</score> </factor> <factor name="factor3" weight="0.3"> <score range="90-100">Excellent</score> <score range="70-89">Good</score> <score range="50-69">Fair</score> <score range="0-49">Poor</score> </factor> </criterion> <validation_tests> <test name="success_case"> <input>factor1=95, factor2=90, factor3=95</input> <calculation>(95*0.4)+(90*0.3)+(95*0.3) = 38+27+28.5 = 93.5</calculation> <expected_status>success</expected_status> <reasoning>High scores yield success</reasoning> </test> <test name="boundary_success_80"> <input>factor1=85, factor2=75, factor3=80</input> <calculation>(85*0.4)+(75*0.3)+(80*0.3) = 34+22.5+24 = 80.5</calculation> <expected_status>success</expected_status> <reasoning>Weighted average 80.5 meets success threshold</reasoning> </test> <test name="boundary_warning_79"> <input>factor1=80, factor2=75, factor3=80</input> <calculation>(80*0.4)+(75*0.3)+(80*0.3) = 32+22.5+24 = 78.5</calculation> <expected_status>warning</expected_status> <reasoning>Weighted average 78.5 triggers warning</reasoning> </test> <test name="boundary_error_59"> <input>factor1=60, factor2=55, factor3=60</input> <calculation>(60*0.4)+(55*0.3)+(60*0.3) = 24+16.5+18 = 58.5</calculation> <expected_status>error</expected_status> <reasoning>Weighted average 58.5 is below 60, triggers error</reasoning> </test> <test name="error_case"> <input>factor1=50, factor2=55, factor3=45</input> <calculation>(50*0.4)+(55*0.3)+(45*0.3) = 20+16.5+13.5 = 50</calculation> <expected_status>error</expected_status> <reasoning>Low scores yield error</reasoning> </test> </validation_tests> </decision_criteria> </example> </pattern> <pattern name="enforcement"> <description>Standard enforcement template with mandatory and prohibited behaviors</description> <example> <enforcement> <mandatory_behaviors> <behavior id="PREFIX-B001" priority="critical"> <trigger>When condition occurs</trigger> <action>Required action</action> <verification>How to verify compliance</verification> </behavior> </mandatory_behaviors> <prohibited_behaviors> <behavior id="PREFIX-P001" priority="critical"> <trigger>Always</trigger> <action>Prohibited action description</action> <response>What to do instead</response> </behavior> </prohibited_behaviors> </enforcement> </example> </pattern> <pattern name="refs_syntax"> <description>Standard syntax for referencing skills from agents and commands</description> <example> <refs> <skill use="patterns">core-patterns</skill> <skill use="patterns">parallelization-patterns</skill> <skill use="patterns">workflow-patterns</skill> <skill use="tools">serena-usage</skill> <skill use="domain">nix-ecosystem</skill> </refs>

Use attribute values: patterns: Shared templates (core-patterns, parallelization-patterns, workflow-patterns) tools: Tool-specific usage patterns (serena-usage, context7-usage) workflow: How-to guides and methodologies (investigation-patterns, execution-workflow) domain: Domain knowledge and best practices (nix-ecosystem, typescript-ecosystem) </example> </pattern> </patterns>

<error_escalation> <level severity="low"> <example>Minor inconsistency in behavior ID format</example> <action>Note in report, proceed</action> </level> <level severity="medium"> <example>Missing one boundary test</example> <action>Document issue, add missing test</action> </level> <level severity="high"> <example>Decision criteria weights do not sum to 1.0</example> <action>STOP, fix weight distribution before proceeding</action> </level> <level severity="critical"> <example>Error escalation missing critical level</example> <action>BLOCK operation, require complete 4-level structure</action> </level> </error_escalation>

<enforcement> <mandatory_behaviors> <behavior id="CORE-B001" priority="critical"> <trigger>When creating new agent or command</trigger> <action>Reference core-patterns skill in refs section</action> <verification>refs tag contains core-patterns</verification> </behavior> <behavior id="CORE-B002" priority="critical"> <trigger>When defining decision_criteria</trigger> <action>Include all 5 validation tests with boundary cases</action> <verification>Tests include boundary_success_80, boundary_warning_79, boundary_error_59</verification> </behavior> </mandatory_behaviors> <prohibited_behaviors> <behavior id="CORE-P001" priority="critical"> <trigger>Always</trigger> <action>Using non-standard confidence thresholds</action> <response>Use 60/80 thresholds as defined in this skill</response> </behavior> </prohibited_behaviors> </enforcement>

<anti_patterns> <avoid name="inline_error_escalation"> <description>Duplicating full error_escalation in each file</description> <instead>Reference core-patterns and customize only examples</instead> </avoid>

<avoid name="inconsistent_thresholds"> <description>Using different confidence thresholds (75, 80, 85) across files</description> <instead>Always use 60/80 boundaries as defined in core-patterns</instead> </avoid> <avoid name="missing_boundary_tests"> <description>Omitting boundary validation tests (59/60, 79/80)</description> <instead>Always include boundary_success_80, boundary_warning_79, boundary_error_59 tests</instead> </avoid> <avoid name="weight_sum_mismatch"> <description>Decision criteria weights not summing to 1.0</description> <instead>Verify weights sum to exactly 1.0 (e.g., 0.4+0.3+0.3)</instead> </avoid> <avoid name="inconsistent_behavior_ids"> <description>Using different ID formats across files</description> <instead>Use PREFIX-TYPE-NUMBER format consistently</instead> </avoid> </anti_patterns>

<best_practices> <practice priority="critical">Reference core-patterns for error_escalation, decision_criteria, enforcement templates</practice> <practice priority="critical">Always include all 5 validation tests: success, boundary_success_80, boundary_warning_79, boundary_error_59, error</practice> <practice priority="critical">Ensure decision criteria weights sum to 1.0</practice> <practice priority="high">Customize error_escalation examples to be domain-specific while keeping structure</practice> <practice priority="high">Use consistent behavior ID prefixes within each agent/command</practice> </best_practices>

<rules priority="critical"> <rule>Always include all 5 validation tests for decision_criteria</rule> <rule>Boundary tests must use exact threshold values (80, 79.x, 59.x)</rule> <rule>Error escalation must have exactly 4 severity levels</rule> <rule>Weights in decision_criteria must sum to 1.0</rule> </rules> <rules priority="standard"> <rule>Use refs tag to reference this skill from agents and commands</rule> <rule>Customize examples in error_escalation while keeping structure</rule> <rule>Use consistent behavior ID naming convention</rule> </rules> <constraints> <must>Define exactly 4 severity levels for error_escalation</must> <must>Include all 5 validation tests for decision_criteria</must> <must>Ensure weights sum to 1.0</must> <must>Use standard confidence thresholds (60/80)</must> <avoid>Inventing new severity levels</avoid> <avoid>Omitting boundary tests</avoid> <avoid>Using non-standard thresholds</avoid> </constraints>

<related_skills> <skill name="parallelization-patterns">Parallel execution strategies and timeout configuration</skill> <skill name="workflow-patterns">Output formats, reflection checkpoints, agent weights</skill> <skill name="serena-usage">For memory operations to store pattern decisions</skill> </related_skills>