Spellbook Legal AI MCP Server for Mastra AI 13 tools — connect in under 2 minutes
Mastra AI is a TypeScript-native agent framework built for modern web stacks. Connect Spellbook Legal AI through the Vinkius and Mastra agents discover all tools automatically — type-safe, streaming-ready, and deployable anywhere Node.js runs.
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Vinkius supports streamable HTTP and SSE.
import { Agent } from "@mastra/core/agent";
import { createMCPClient } from "@mastra/mcp";
import { openai } from "@ai-sdk/openai";
async function main() {
// Your Vinkius token — get it at cloud.vinkius.com
const mcpClient = await createMCPClient({
servers: {
"spellbook-legal-ai": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "Spellbook Legal AI Agent",
instructions:
"You help users interact with Spellbook Legal AI " +
"using 13 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with Spellbook Legal AI?"
);
console.log(result.text);
}
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 Spellbook Legal AI MCP Server
Connect to Spellbook Legal AI and bring AI-powered contract drafting, review, and analysis to any AI agent. Trusted by 4,000+ in-house teams and law firms worldwide, Spellbook helps transactional lawyers draft and review contracts faster and more accurately.
Mastra's agent abstraction provides a clean separation between LLM logic and Spellbook Legal AI tool infrastructure. Connect 13 tools through the Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution — deployable to any Node.js host in one command.
What you can do
- Contract Analysis — AI-powered review of contracts identifying risks, missing clauses, non-standard terms, and issues
- Clause Suggestions — Get AI-generated clause suggestions based on market standards and best practices
- Contract Comparison — Compare two contract versions to identify additions, deletions, and modifications
- Market Comparison — Compare contract terms against 2,000+ market precedents showing pro-buyer, pro-seller, and market-standard positions
- AI Clause Drafting — Generate AI-drafted clauses based on specified requirements, jurisdiction, and party position
- Contract Summarization — Generate concise summaries highlighting key terms, obligations, and risks
- Risk Assessment — Get comprehensive risk assessments with high, medium, and low risk issues and remediations
- Playbook Compliance — Check contracts against company playbooks to identify deviations from standards
- Clause Library Search — Search Spellbook's extensive clause library for standard, market-tested clauses
- Document Management — Upload, list, and search contract documents with filtering by status and type
The Spellbook Legal AI MCP Server exposes 13 tools through the Vinkius. Connect it to Mastra AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect Spellbook Legal AI to Mastra AI via MCP
Follow these steps to integrate the Spellbook Legal AI MCP Server with Mastra AI.
Install dependencies
Run npm install @mastra/core @mastra/mcp @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.ts and run with npx tsx agent.ts
Explore tools
Mastra discovers 13 tools from Spellbook Legal AI via MCP
Why Use Mastra AI with the Spellbook Legal AI MCP Server
Mastra AI provides unique advantages when paired with Spellbook Legal AI through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure — add Spellbook Legal AI without touching business code
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
TypeScript-native: full type inference for every Spellbook Legal AI tool response with IDE autocomplete and compile-time checks
One-command deployment to any Node.js host — Vercel, Railway, Fly.io, or your own infrastructure
Spellbook Legal AI + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the Spellbook Legal AI MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query Spellbook Legal AI, process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed Spellbook Legal AI as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query Spellbook Legal AI on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using Spellbook Legal AI tools alongside other MCP servers
Spellbook Legal AI MCP Tools for Mastra AI (13)
These 13 tools become available when you connect Spellbook Legal AI to Mastra AI via MCP:
analyze_spellbook_contract
USE WHEN: - User wants to review a contract for risks - User needs to identify issues in a contract - User asks to "analyze this contract" or "review for risks" PARAMETERS: - document_id (REQUIRED): ID of the document to analyze - analysis_type (OPTIONAL): Type of analysis — "full" (default), "risks_only", "clause_check", "market_comparison" EXAMPLES: - "Analyze document 123 for risks" → call with document_id="123" - "Review this contract for issues" → call with document_id="123", analysis_type="full" - "Check clauses in document 456" → call with document_id="456", analysis_type="clause_check" Analyze a contract document for risks, issues, and suggestions
check_spellbook_playbook
Check contract compliance against a playbook
compare_spellbook_contracts
USE WHEN: - User wants to compare two versions of a contract - User needs to identify changes between drafts - User asks to "compare these contracts" or "show differences" PARAMETERS: - document_id_1 (REQUIRED): ID of the first document - document_id_2 (REQUIRED): ID of the second document - comparison_type (OPTIONAL): Type of comparison — "full" (default), "clauses_only", "risk_comparison" EXAMPLES: - "Compare documents 123 and 456" → call with document_id_1="123", document_id_2="456" - "Show differences between contract versions" → call with document_id_1="123", document_id_2="456", comparison_type="full" Compare two contract versions to identify differences
draft_spellbook_clause
USE WHEN: - User needs to draft a new clause for a contract - User wants AI to generate standard clause language - User asks to "draft a limitation of liability clause" or "write an indemnification clause" PARAMETERS: - clause_type (REQUIRED): Type of clause to draft (e.g. "Limitation of Liability", "Indemnification", "Confidentiality") - party_position (OPTIONAL): Which party position to draft for — "neutral" (default), "pro-buyer", "pro-seller", "pro-vendor" - jurisdiction (OPTIONAL): Jurisdiction for the clause (e.g. "New York", "Delaware", "California", "UK") - custom_instructions (OPTIONAL): Additional instructions or requirements for the clause EXAMPLES: - "Draft a limitation of liability clause" → call with clause_type="Limitation of Liability" - "Draft a pro-buyer indemnification clause for New York" → call with clause_type="Indemnification", party_position="pro-buyer", jurisdiction="New York" - "Write a confidentiality clause with custom instructions" → call with clause_type="Confidentiality", custom_instructions="Include data breach notification requirements" Draft a contract clause using Spellbook AI
get_spellbook_clause_suggestions
Get AI clause suggestions for a contract document
get_spellbook_document
Get detailed information for a specific contract document
get_spellbook_market_comparison
Shows pro-buyer, pro-seller, and market-standard positions. Get market comparison data for a specific clause type
get_spellbook_risk_assessment
Get a detailed risk assessment for a contract document
list_spellbook_documents
Supports filtering by status, document type, and date range. USE WHEN: - User wants to see all their contract documents - User needs to find contracts by status or type - User is exploring their document library - User asks "what contracts do I have" or "list my documents" PARAMETERS: - status (OPTIONAL): Filter by document status (e.g. "Draft", "In Review", "Finalized") - document_type (OPTIONAL): Filter by document type (e.g. "NDA", "MSA", "SOW", "Employment Agreement") - date_from (OPTIONAL): Start date filter (YYYY-MM-DD) - date_to (OPTIONAL): End date filter (YYYY-MM-DD) - page (OPTIONAL): Page number for pagination - page_size (OPTIONAL): Results per page (default: 25, max: 100) EXAMPLES: - "List all my contract documents" → call with no params - "Show contracts in review" → call with status="In Review" - "List NDAs" → call with document_type="NDA" List all contract documents in Spellbook
search_spellbook_clause_library
Search the Spellbook clause library for standard clauses
search_spellbook_documents
Search contract documents by keyword
summarize_spellbook_contract
Generate an AI summary of a contract document
upload_spellbook_document
USE WHEN: - User wants to upload a new contract for review - User needs to analyze a contract received from another party - User asks to "upload this contract" or "analyze this document" PARAMETERS: - file_name (REQUIRED): Name of the document file - file_content (REQUIRED): Base64-encoded file content or document text - document_type (OPTIONAL): Type of document (e.g. "NDA", "MSA", "SOW") EXAMPLES: - "Upload this NDA for review" → call with file_name="NDA.pdf", file_content="[base64 content]", document_type="NDA" - "Analyze this MSA contract" → call with file_name="MSA.docx", file_content="[base64 content]", document_type="MSA" Upload a contract document to Spellbook for analysis
Example Prompts for Spellbook Legal AI in Mastra AI
Ready-to-use prompts you can give your Mastra AI agent to start working with Spellbook Legal AI immediately.
"Analyze this NDA for risks and issues."
"Draft a pro-buyer limitation of liability clause for Delaware."
"Compare the market standard for indemnification clauses."
Troubleshooting Spellbook Legal AI MCP Server with Mastra AI
Common issues when connecting Spellbook Legal AI to Mastra AI through the Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpSpellbook Legal AI + Mastra AI FAQ
Common questions about integrating Spellbook Legal AI MCP Server with Mastra AI.
How does Mastra AI connect to MCP servers?
MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.Can Mastra agents use tools from multiple servers?
Does Mastra support workflow orchestration?
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Connect Spellbook Legal AI to Mastra AI
Get your token, paste the configuration, and start using 13 tools in under 2 minutes. No API key management needed.