Yousign MCP Server for Pydantic AIGive Pydantic AI instant access to 12 tools to Activate Signature Request, Add Document To Request, Add Signer To Request, and more
Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect Yousign through Vinkius and every tool is automatically validated against Pydantic schemas. catch errors at build time, not in production.
Ask AI about this App Connector for Pydantic AI
The Yousign app connector for Pydantic AI is a standout in the Industry Titans category — giving your AI agent 12 tools to work with, ready to go from day one.
Vinkius delivers Streamable HTTP and SSE to any MCP client
import asyncio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerHTTP
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
server = MCPServerHTTP(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
agent = Agent(
model="openai:gpt-4o",
mcp_servers=[server],
system_prompt=(
"You are an assistant with access to Yousign "
"(12 tools)."
),
)
result = await agent.run(
"What tools are available in Yousign?"
)
print(result.data)
asyncio.run(main())
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About Yousign MCP Server
Connect your Yousign account to any AI agent to automate your electronic signature workflows and contract management through natural conversation.
Pydantic AI validates every Yousign tool response against typed schemas, catching data inconsistencies at build time. Connect 12 tools through Vinkius and switch between OpenAI, Anthropic, or Gemini without changing your integration code. full type safety, structured output guarantees, and dependency injection for testable agents.
What you can do
- Request Management — Create and manage electronic signature requests for multiple documents and signers.
- Signer Customization — Add signers with customizable signature levels and authentication modes (OTP, no-OTP).
- Real-time Monitoring — Track signature request status in real-time and automate the activation/sending process.
- Compliance & Auditing — Download signed documents and comprehensive audit trails for full legal compliance.
The Yousign MCP Server exposes 12 tools through the Vinkius. Connect it to Pydantic AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
All 12 Yousign tools available for Pydantic AI
When Pydantic AI connects to Yousign through Vinkius, your AI agent gets direct access to every tool listed below — spanning contract-signing, electronic-signature, security, and more. Every call is secured with network, filesystem, subprocess, and code evaluation entitlements inside a sandboxed runtime. Beyond a simple connection, you get a full AI Gateway with real-time visibility into agent activity, enterprise governance, and optimized token usage.
Send for signature
Note: In this version, pass metadata info. Upload PDF to sign
Define who signs
Stop signature process
Start new signature process
Add to address book
Remove draft request
Get evidence file link
Get request status
Get account info
List all requests
List address book
Connect Yousign to Pydantic AI via MCP
Follow these steps to wire Yousign into Pydantic AI. The entire setup takes under two minutes — your credentials stay safe behind the Vinkius.
Install Pydantic AI
pip install pydantic-aiReplace the token
[YOUR_TOKEN_HERE] with your Vinkius tokenRun the agent
agent.py and run: python agent.pyExplore tools
Why Use Pydantic AI with the Yousign MCP Server
Pydantic AI provides unique advantages when paired with Yousign through the Model Context Protocol.
Full type safety: every MCP tool response is validated against Pydantic models, catching data inconsistencies before they reach your application
Model-agnostic architecture. switch between OpenAI, Anthropic, or Gemini without changing your Yousign integration code
Structured output guarantee: Pydantic AI ensures tool results conform to defined schemas, eliminating runtime type errors
Dependency injection system cleanly separates your Yousign connection logic from agent behavior for testable, maintainable code
Yousign + Pydantic AI Use Cases
Practical scenarios where Pydantic AI combined with the Yousign MCP Server delivers measurable value.
Type-safe data pipelines: query Yousign with guaranteed response schemas, feeding validated data into downstream processing
API orchestration: chain multiple Yousign tool calls with Pydantic validation at each step to ensure data integrity end-to-end
Production monitoring: build validated alert agents that query Yousign and output structured, schema-compliant notifications
Testing and QA: use Pydantic AI's dependency injection to mock Yousign responses and write comprehensive agent tests
Example Prompts for Yousign in Pydantic AI
Ready-to-use prompts you can give your Pydantic AI agent to start working with Yousign immediately.
"Create a new signature request named 'Annual Service Agreement'."
"Check the status of my ongoing signature requests."
Troubleshooting Yousign MCP Server with Pydantic AI
Common issues when connecting Yousign to Pydantic AI through the Vinkius, and how to resolve them.
MCPServerHTTP not found
pip install --upgrade pydantic-aiYousign + Pydantic AI FAQ
Common questions about integrating Yousign MCP Server with Pydantic AI.
How does Pydantic AI discover MCP tools?
MCPServerHTTP instance with the server URL. Pydantic AI connects, discovers all tools, and generates typed Python interfaces automatically.