How to Use the FOSSA (License Compliance) MCP in LlamaIndex

Q: Can I restrict which FOSSA (License Compliance) tools my LlamaIndex agent uses?

You absolutely can. Use the allowedtools filter when setting up the MCP client. This lets you expose listprojects while hiding checkvulnerabilities from lower-privileged RAG applications.

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Connect FOSSA (License Compliance) MCP to LlamaIndex

Create your Vinkius account to connect FOSSA (License Compliance) to LlamaIndex and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup FOSSA (License Compliance) with LlamaIndex

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Index FOSSA (License Compliance) MCP Server Data

The `list_projects` tool feeds your LlamaIndex vector store with the structural hierarchy of your organization's software. You call this endpoint, retrieve the metadata, and embed it directly into your index. This allows developers to query your internal RAG application about project ownership and status using natural language. You map the resulting project IDs to the `list_revisions` tool. The agent ingests the historical commit data and adds it to the searchable knowledge base. When a developer asks what changed between two releases, the answer comes from actual FOSSA records rather than an LLM hallucination.

Semantic Search for Dependencies

The `get_revision_dependencies` tool outputs the raw dependency tree for any given build. LlamaIndex takes this nested JSON and flattens it into queryable document nodes. Your teams can now search across hundreds of repositories to find exactly where an outdated React version lives. When a new zero-day hits, you do not need to run manual scans. You ask your LlamaIndex agent if the affected package exists in the vector store. If it does, the agent immediately uses `get_parent_projects` to list the affected applications and their maintainers.

Grounded Vulnerability Reports

The `check_vulnerabilities` tool accepts dependency locators and returns security flaws. By passing this tool to a FunctionAgent via McpToolSpec, your LlamaIndex application can pull live CVE data during a user conversation. The agent grounds its security advice in current, real-world facts. Historical compliance data matters just as much as live scans. The `get_revision` tool provides the exact state of a project at a specific moment in time. You index these snapshots so auditors can query the exact license compliance status of a product on the day it shipped over the MCP protocol.

Setup guide

Set up FOSSA (License Compliance) MCP in LlamaIndex

Prerequisites

Python 3.10+ installed
llama-index-tools-mcp package
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install llama-index-tools-mcp llama-index-llms-openai. The MCP tools package provides BasicMCPClient and McpToolSpec.
2

Connect with BasicMCPClient
Point BasicMCPClient to your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. Supports SSE and Streamable HTTP transports.
3

Convert to LlamaIndex tools
Call mcp_tool_spec.to_tool_list_async() to convert all FOSSA (License Compliance) MCP tools into native FunctionTool objects that any LlamaIndex agent can use.
4

Run with any LLM
Create a FunctionAgent with the tools and your preferred LLM. Swap OpenAI for Anthropic, Gemini, or any LlamaIndex-supported provider.

agent.py

from llama_index.tools.mcp import BasicMCPClient, McpToolSpec
from llama_index.core.agent.workflow import FunctionAgent
from llama_index.llms.openai import OpenAI

# Connect to the MCP
mcp_client = BasicMCPClient(
    "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)
mcp_tool_spec = McpToolSpec(client=mcp_client)

# Convert MCP tools to LlamaIndex tools
tools = await mcp_tool_spec.to_tool_list_async()

# Create and run the agent
agent = FunctionAgent(
    tools=tools,
    llm=OpenAI(model="gpt-4o"),
    system_prompt="You have access to FOSSA (License Compliance) tools.",
)
response = await agent.run("List recent FOSSA (License Compliance) data")

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Common questions about FOSSA (License Compliance) MCP in LlamaIndex

Install llama-index-tools-mcp via pip. Instantiate a BasicMCPClient with your FOSSA URL, wrap it in an McpToolSpec, and call to_tool_list_async() to feed the functions to your agent.

You absolutely can. Use the allowed_tools filter when setting up the MCP client. This lets you expose list_projects while hiding check_vulnerabilities from lower-privileged RAG applications.

Standard RAG relies on static text files. FOSSA provides live API data about your software supply chain. Your agent combines documentation with real-time dependency trees to give accurate technical answers.

Dependency trees are dense. You should configure LlamaIndex to chunk the output of get_revision_dependencies carefully. Storing the raw JSON directly in the vector store without parsing will bloat your index.

The MCP protocol handles authentication outside the agent's memory space. The server processes dependency versions and CVE identifiers. Your credentials stay locked inside the ephemeral container environment, completely invisible to the LLM.

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