diff --git a/pocs/json_schema/Cargo.lock b/pocs/json_schema/Cargo.lock
new file mode 100644
index 0000000..46f0b9d
--- /dev/null
+++ b/pocs/json_schema/Cargo.lock
@@ -0,0 +1,225 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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+ "cfg-if",
+ "libc",
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+ "rustc-demangle",
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+ "anyhow",
+ "serde",
+ "serde_json",
+ "serde_yaml",
+]
+
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+ "adler",
+]
+
+[[package]]
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+ "proc-macro2",
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+[[package]]
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+ "serde",
+]
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+ "quote",
+ "unicode-ident",
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+
+[[package]]
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diff --git a/pocs/json_schema/Cargo.toml b/pocs/json_schema/Cargo.toml
new file mode 100644
index 0000000..08dbc67
--- /dev/null
+++ b/pocs/json_schema/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "json_schema"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = { version = "1.0.62", features = ["backtrace"] }
+serde = { version = "1.0.143", features = ["derive"] }
+serde_json = "1.0.83"
+serde_yaml = "0.9.9"
diff --git a/pocs/json_schema/actions.schema.json b/pocs/json_schema/actions.schema.json
new file mode 100644
index 0000000..9522cda
--- /dev/null
+++ b/pocs/json_schema/actions.schema.json
@@ -0,0 +1,12 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema",
+  "properties": {
+    "path": {
+      "type": "string"
+    },
+    "dependsOn": {
+      "type": "array"
+    }
+  },
+  "additionalProperties": false
+}
diff --git a/pocs/json_schema/base.schema.json b/pocs/json_schema/base.schema.json
new file mode 100644
index 0000000..b2f2574
--- /dev/null
+++ b/pocs/json_schema/base.schema.json
@@ -0,0 +1,8 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema",
+  "properties": {
+    "version": {
+      "type": "string"
+    }
+  }
+}
diff --git a/pocs/json_schema/ruddle.yaml b/pocs/json_schema/ruddle.yaml
new file mode 100644
index 0000000..0aed258
--- /dev/null
+++ b/pocs/json_schema/ruddle.yaml
@@ -0,0 +1,56 @@
+# yaml-language-server: $schema=schema.json
+
+version: "some-upstream-repo-for-ruddle@some-api-version"
+name: "ruddle_base_plan"
+implicitProvider: git.front.kjuulh.io
+
+plugins:
+  ruddle/global@latest:
+    file: ruddle.yaml # is default, can be omitted
+    path: org
+    orgSettings:
+    - key: "name"
+      required: true # required is default and can be omitted
+    - key: "squad"
+      required: true
+    - key: "domain"
+      required: false
+  ruddle/vars@latest:
+    path: vars
+    vars:
+      - when: dev
+        vars:
+          SOME_VARIABLE: SOME_VALUE
+      - when: prod
+        vars:
+          SOME_VARIABLE: SOME_OTHER_VALUE
+
+  ruddle/actions@1.0.0:
+    path: actions
+    dependsOn:
+      - ruddle/shell@1.0.0
+      - ruddle/dagger@1.0.0
+    basePath: scripts/
+    scripts:
+      notify_team:
+        description: |
+          will send notification on slack
+        args:
+          - arg: "text"
+          - env: "env"
+          - env: "slack_secret"
+        actions:
+          - shell: "send_notification"
+      build_service:
+        description: |
+          some quite long
+          description
+        args:
+          - arg: "version"
+        actions:
+          - shell: get_cache.sh
+          - dagger: download_dependencies
+          - dagger: build_service
+          - shell: upload_service
+          - ruddle: notify_team
+
diff --git a/pocs/json_schema/schema.json b/pocs/json_schema/schema.json
new file mode 100644
index 0000000..424c5dc
--- /dev/null
+++ b/pocs/json_schema/schema.json
@@ -0,0 +1,31 @@
+{
+  "$defs": {
+    "actions": {
+      "$schema": "http://json-schema.org/draft-07/schema",
+      "additionalProperties": false,
+      "properties": {
+        "dependsOn": {
+          "type": "array"
+        },
+        "path": {
+          "type": "string"
+        }
+      }
+    }
+  },
+  "$schema": "http://json-schema.org/draft-07/schema",
+  "properties": {
+    "plugins": {
+      "additionalProperties": false,
+      "properties": {
+        "ruddle/actions@1.0.0": {
+          "$ref": "#/$defs/actions"
+        }
+      },
+      "type": "object"
+    },
+    "version": {
+      "type": "string"
+    }
+  }
+}
diff --git a/pocs/json_schema/src/main.rs b/pocs/json_schema/src/main.rs
new file mode 100644
index 0000000..3f4e282
--- /dev/null
+++ b/pocs/json_schema/src/main.rs
@@ -0,0 +1,45 @@
+use std::collections::HashMap;
+
+fn main() -> anyhow::Result<()> {
+    println!("Hello, json_schemas!");
+
+    let mut base_schema: serde_json::Value = load_json("base.schema.json")?;
+    let actions_schema: serde_json::Value = load_json("actions.schema.json")?;
+
+    let mut defs: HashMap<String, serde_json::Value> = HashMap::new();
+
+    defs.insert("actions".to_string(), actions_schema);
+    base_schema["$defs"] = serde_json::to_value(defs)?;
+
+    let mut plugins: HashMap<String, serde_json::Value> = HashMap::new();
+    plugins.insert("ruddle/actions@1.0.0".into(), refs("#/$defs/actions")?);
+    base_schema["properties"]["plugins"]["type"] = serde_json::to_value("object")?;
+    base_schema["properties"]["plugins"]["properties"] = serde_json::to_value(plugins)?;
+    base_schema["properties"]["plugins"]["additionalProperties"] = serde_json::to_value(false)?;
+
+    let schema = std::fs::File::create("schema.json")?;
+    let file_writer = std::io::BufWriter::new(schema);
+
+    serde_json::to_writer(file_writer, &base_schema)?;
+
+    Ok(())
+}
+
+fn refs(content: &str) -> anyhow::Result<serde_json::Value> {
+    let mut refs = serde_json::Value::default();
+    refs["$ref"] = serde_json::to_value(content)?;
+
+    Ok(refs)
+}
+
+fn load_json(file_name: &str) -> anyhow::Result<serde_json::Value> {
+    let file = std::fs::File::open(file_name)?;
+    let file_reader = std::io::BufReader::new(file);
+
+    let schema: serde_json::Value = serde_json::from_reader(file_reader)?;
+
+    println!("printing schema: {}", file_name);
+    println!("{:#?}", schema);
+
+    Ok(schema)
+}