Update docs

README.md

@@ -538,4 +538,61 @@ The build process now involves building each package (`core` and `plugins`) sepa
 4.  Run the build: `python -m build`.
 5.  The distributable files (`.whl` and `.tar.gz`) will be in the `dist/` directory.
 
+## OpenAPI Ingestion - Zero Infrastructure Tool Integration
+
+🚀 **Transform any existing REST API into UTCP tools without server modifications!**
+
+UTCP's OpenAPI ingestion feature automatically converts OpenAPI 2.0/3.0 specifications into UTCP tools, enabling AI agents to interact with existing APIs directly - no wrapper servers, no API changes, no additional infrastructure required.
+
+### Quick Start with OpenAPI
+
+```python
+from utcp_http.openapi_converter import OpenApiConverter
+import aiohttp
+
+# Convert any OpenAPI spec to UTCP tools
+async def convert_api():
+    async with aiohttp.ClientSession() as session:
+        async with session.get("https://api.github.com/openapi.json") as response:
+            openapi_spec = await response.json()
+
+    converter = OpenApiConverter(openapi_spec)
+    manual = converter.convert()
+
+    print(f"Generated {len(manual.tools)} tools from GitHub API!")
+    return manual
+
+# Or use UTCP Client configuration for automatic detection
+from utcp.utcp_client import UtcpClient
+
+client = await UtcpClient.create(config={
+    "manual_call_templates": [{
+        "name": "github",
+        "call_template_type": "http", 
+        "url": "https://api.github.com/openapi.json"
+    }]
+})
+```
+
+### Key Benefits
+
+- ✅ **Zero Infrastructure**: No servers to deploy or maintain
+- ✅ **Direct API Calls**: Native performance, no proxy overhead  
+- ✅ **Automatic Conversion**: OpenAPI schemas → UTCP tools
+- ✅ **Authentication Preserved**: API keys, OAuth2, Basic auth supported
+- ✅ **Multi-format Support**: JSON, YAML, OpenAPI 2.0/3.0
+- ✅ **Batch Processing**: Convert multiple APIs simultaneously
+
+### Multiple Ingestion Methods
+
+1. **Direct Converter**: `OpenApiConverter` class for full control
+2. **Remote URLs**: Fetch and convert specs from any URL
+3. **Client Configuration**: Include specs directly in UTCP config
+4. **Batch Processing**: Process multiple specs programmatically
+5. **File-based**: Convert local JSON/YAML specifications
+
+📖 **[Complete OpenAPI Ingestion Guide](docs/openapi-ingestion.md)** - Detailed examples and advanced usage
+
+---
+
 ## [Contributors](https://www.utcp.io/about)

docs/openapi-ingestion.md

@@ -0,0 +1,150 @@
+# OpenAPI Ingestion Methods in python-utcp
+
+UTCP automatically converts OpenAPI 2.0/3.0 specifications into UTCP tools, enabling AI agents to interact with REST APIs without requiring server modifications or additional infrastructure.
+
+## Method 1: Direct OpenAPI Converter
+
+Use the `OpenApiConverter` class for maximum control over the conversion process.
+
+```python
+from utcp_http.openapi_converter import OpenApiConverter  # utcp-http plugin
+import json
+
+# From local JSON file
+with open("api_spec.json", "r") as f:
+    openapi_spec = json.load(f)
+
+converter = OpenApiConverter(openapi_spec)
+manual = converter.convert()
+
+print(f"Generated {len(manual.tools)} tools")
+```
+
+```python
+from utcp_http.openapi_converter import OpenApiConverter  # utcp-http plugin
+import yaml
+
+# From YAML file (can also be JSON)
+with open("api_spec.yaml", "r") as f:
+    openapi_spec = yaml.safe_load(f)
+
+converter = OpenApiConverter(openapi_spec)
+manual = converter.convert()
+```
+
+## Method 2: Remote OpenAPI Specification
+
+Fetch and convert OpenAPI specifications from remote URLs.
+
+```python
+import aiohttp
+from utcp_http.openapi_converter import OpenApiConverter  # utcp-http plugin
+
+async def load_remote_spec(url):
+    async with aiohttp.ClientSession() as session:
+        async with session.get(url) as response:
+            response.raise_for_status()
+            openapi_spec = await response.json()
+
+    converter = OpenApiConverter(openapi_spec, spec_url=url)
+    return converter.convert()
+
+# Usage
+manual = await load_remote_spec("https://api.example.com/openapi.json")
+```
+
+## Method 3: UTCP Client Configuration
+
+Include OpenAPI specs directly in your UTCP client configuration.
+
+```python
+from utcp.utcp_client import UtcpClient  # core utcp package
+
+config = {
+    "manual_call_templates": [
+        {
+            "name": "weather_api",
+            "call_template_type": "http",
+            "url": "https://api.weather.com/openapi.json",
+            "http_method": "GET"
+        }
+    ]
+}
+
+client = await UtcpClient.create(config=config)
+```
+
+```python
+# With authentication
+config = {
+    "manual_call_templates": [
+        {
+            "name": "authenticated_api",
+            "call_template_type": "http", 
+            "url": "https://api.example.com/openapi.json",
+            "auth": {
+                "auth_type": "api_key",
+                "api_key": "${API_KEY}",
+                "var_name": "Authorization",
+                "location": "header"
+            }
+        }
+    ]
+}
+```
+
+## Method 4: Batch Processing
+
+Process multiple OpenAPI specifications programmatically.
+
+```python
+import aiohttp
+from utcp_http.openapi_converter import OpenApiConverter  # utcp-http plugin
+from utcp.data.utcp_manual import UtcpManual  # core utcp package
+
+async def process_multiple_specs(spec_urls):
+    all_tools = []
+
+    for i, url in enumerate(spec_urls):
+        async with aiohttp.ClientSession() as session:
+            async with session.get(url) as response:
+                openapi_spec = await response.json()
+
+        converter = OpenApiConverter(openapi_spec, spec_url=url, call_template_name=f"api_{i}")
+        manual = converter.convert()
+        all_tools.extend(manual.tools)
+
+    return UtcpManual(tools=all_tools)
+
+# Usage
+spec_urls = [
+    "https://api.github.com/openapi.json",
+    "https://api.stripe.com/openapi.yaml"
+]
+
+combined_manual = await process_multiple_specs(spec_urls)
+```
+
+## Key Features
+
+### Authentication Mapping
+OpenAPI security schemes automatically convert to UTCP auth objects:
+
+- `apiKey` → `ApiKeyAuth`
+- `http` (basic) → `BasicAuth` 
+- `http` (bearer) → `ApiKeyAuth`
+- `oauth2` → `OAuth2Auth`
+
+### Multi-format Support
+- **OpenAPI 2.0 & 3.0**: Full compatibility
+- **JSON & YAML**: Automatic format detection
+- **Local & Remote**: Files or URLs
+
+### Schema Resolution
+- Handles `$ref` references automatically
+- Resolves nested object definitions
+- Detects circular references
+
+## Examples
+
+See the [examples repository](https://github.com/universal-tool-calling-protocol/utcp-examples) for complete working examples.

plugins/communication_protocols/cli/src/utcp_cli/cli_call_template.py

@@ -7,7 +7,8 @@
 import traceback
 
 class CommandStep(BaseModel):
-    """Configuration for a single command step in a CLI execution flow.
+    """REQUIRED
+    Configuration for a single command step in a CLI execution flow.
 
     Attributes:
         command: The command string to execute. Can contain UTCP_ARG_argname_UTCP_END

plugins/communication_protocols/cli/src/utcp_cli/cli_communication_protocol.py

@@ -10,7 +10,6 @@
     - Tool discovery by running a command that outputs a UTCP manual.
     - Flexible argument formatting for different CLI conventions.
     - Support for environment variables and custom working directories.
-    - Automatic parsing of JSON output with a fallback to raw text.
     - Cross-platform command parsing for Windows and Unix-like systems.
 
 Security Considerations:
@@ -588,8 +587,7 @@ async def call_tool(self, caller, tool_name: str, tool_args: Dict[str, Any], too
         Returns:
             The result of the command execution. If the command exits with a code
             of 0, it returns the content of stdout. If the exit code is non-zero,
-            it returns the content of stderr. The output is parsed as JSON if
-            possible; otherwise, it is returned as a raw string.
+            it returns the content of stderr.
 
         Raises:
             ValueError: If `tool_call_template` is not an instance of

plugins/communication_protocols/mcp/tests/test_mcp_transport.py

@@ -55,7 +55,7 @@ async def test_register_manual_discovers_tools(transport: McpCommunicationProtoc
     assert len(register_result.manual.tools) == 4
 
     # Find the echo tool
-    echo_tool = next((tool for tool in register_result.manual.tools if tool.name ==f"{SERVER_NAME}.echo"), None)
+    echo_tool = next((tool for tool in register_result.manual.tools if tool.name == f"{SERVER_NAME}.echo"), None)
     assert echo_tool is not None
     assert "echoes back its input" in echo_tool.description