diff --git a/module/move/assistant/design/agents_design.md b/module/move/assistant/design/agents_design.md
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+# Agents
+
+## YAML description structure
+
+Please refer to `examples/` directory.
+
+## Paths
+
+- Used in node types, templates.
+- Parts are delimited with `::`.
+- Absolute path has a leading `::`.
+- All paths (expect absolute) **are subject to absolutization**. Absolutization also depends on the context: in `next` fields paths are absolutized to `::nodes` dir, in templates - to `::output` and so on.
+
+## Execution
+
+- YAML file contains section about `nodes:`.
+- Next node is encoded in `next:` field. 
+- Output of the nodes are stored in `::output` dir.
+
+## Builtin scenarios
+
+- `::scenario::entry`
+- `::scenario::termination`
+
+## Node types
+
+- Input nodes:
+  - `trigger::stdin`
+  - `trigger::file`
+- Processing nodes:
+  - `script`
+  - `agent::completion`
+- Output nodes:
+  - `event::stdout`
+  - `event::file`
+
+Refer to examples in `examples/` to see fields of nodes.
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diff --git a/module/move/assistant/design/agents_examples/sql.yaml b/module/move/assistant/design/agents_examples/sql.yaml
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+ nodes:
+  - id: input
+    type: trigger::stdin
+    prompt: 'Your query: '
+    next: node::translator
+
+  - id: sql_generator_stage1
+    type: agent::completion
+    system_message: 'Your task is to think about how to translate the user query in natural langauge in SQL langauge. Think step by steps.'
+    user_message: '{{input}}'
+    next: node::sql_generator_stage2
+
+  - id: sql_generator_stage2
+    type: agent::completion
+    system_message: 'Your task to make an SQL code based on user query in natural language and the results of thinking on that query'.
+    user_message: '{{sql_generator_stage1}}'
+    agent_reuse: node::sql_generator_stage2
+    next: node::output
+
+  - id: output
+    type: event::stdout
+    output: '{{sql_generator_stage2}}'
+    next: scenario::termination
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