Can I verify if a non-profit is eligible for tax-deductible donations?

Yes! Use the `verify_charity_status` tool with the organization's EIN. Your agent will fetch the real-time compliance status from Candid's Charity Check API.

How do I find the EIN for an organization if I only have its name?

Simply ask the agent to `search_nonprofits` and provide the name. The search results will include the EIN for each matching organization, which you can then use for deeper lookups.

Does the integration allow accessing diversity and inclusion data?

Yes. Use the `get_demographics` tool. It will retrieve the DEI metadata provided by the organization to Candid, helping you understand their leadership and staff representation.

Candid (GuideStar) MCP Server for Google ADK 10 tools — connect in under 2 minutes

Name: Candid (GuideStar)
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 10 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add Candid (GuideStar) as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token. get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="candid_guidestar_agent",
    instruction=(
        "You help users interact with Candid (GuideStar) "
        "using 10 available tools."
    ),
    tools=[mcp_tools],
)

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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 Candid (GuideStar) MCP Server

Connect your Candid (formerly GuideStar) account to any AI agent and orchestrate your non-profit research, due diligence, and philanthropic data workflows through natural conversation.

Google ADK natively supports Candid (GuideStar) as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 10 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

What you can do

Organization Oversight — Search for non-profits by name, location, or NTEE code and retrieve basic metadata using the Essentials API.
Deep-Dive Profiles — Access comprehensive data (Premier tier) including mission statements, leadership, and detailed financials.
Charity Compliance — Verify IRS tax-exempt status and eligibility to receive tax-deductible contributions using the Charity Check tool.
Financial Auditing — Retrieve detailed financial records and IRS Form 990 data straight from your workspace.
Demographics Analysis — Access diversity, equity, and inclusion (DEI) data for organizations to inform your philanthropic strategy.
Organization Discovery — Use the EIN (Employer Identification Number) as a primary key to fetch 760+ data fields for individual entities.

The Candid (GuideStar) MCP Server exposes 10 tools through the Vinkius. Connect it to Google ADK 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 Candid (GuideStar) to Google ADK via MCP

Follow these steps to integrate the Candid (GuideStar) MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 10 tools from Candid (GuideStar) via MCP

Why Use Google ADK with the Candid (GuideStar) MCP Server

Google ADK provides unique advantages when paired with Candid (GuideStar) through the Model Context Protocol.

Google ADK natively supports MCP tool servers. declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with Candid (GuideStar)

Production-ready features like session management, evaluation, and deployment come built-in. not bolted on

Seamless integration with Google Cloud services means you can combine Candid (GuideStar) tools with BigQuery, Vertex AI, and Cloud Functions

Candid (GuideStar) + Google ADK Use Cases

Practical scenarios where Google ADK combined with the Candid (GuideStar) MCP Server delivers measurable value.

Enterprise data agents: ADK agents query Candid (GuideStar) and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine Candid (GuideStar) tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query Candid (GuideStar) regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including Candid (GuideStar)

Candid (GuideStar) MCP Tools for Google ADK (10)

These 10 tools become available when you connect Candid (GuideStar) to Google ADK via MCP:

get_charity_check_pdf

Generate a PDF report for compliance record-keeping

get_demographics

Get DEI data for a nonprofit

get_grant_details

Get specific details for a grant

get_nonprofit_eligibility

Verify nonprofit eligibility for specific donation platforms

get_nonprofit_essentials

Get core details for a nonprofit by EIN

get_nonprofit_news

Get real-time social sector news related to a nonprofit

get_nonprofit_premier

Get comprehensive deep-dive data for a nonprofit by EIN

search_grants

Search for grants awarded by foundations

search_nonprofits

Search for nonprofits using filters

verify_charity_status

Verify an organization's eligibility to receive tax-deductible contributions

Example Prompts for Candid (GuideStar) in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with Candid (GuideStar) immediately.

"Search for non-profits in 'Miami' with the name 'Red Cross'."

"Get detailed financial info for EIN 13-162xxxx."

"Verify the charity status for EIN 52-153xxxx."

Troubleshooting Candid (GuideStar) MCP Server with Google ADK

Common issues when connecting Candid (GuideStar) to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

Candid (GuideStar) + Google ADK FAQ

Common questions about integrating Candid (GuideStar) MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.