GrantSonar
Search verified-open US grants (federal, state, foundation). Read-only MCP for AI agents.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"grantsonar": {
"url": "https://grantsonar.com/api/mcp"
}
}
}Remote endpoints
https://grantsonar.com/api/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢search_grants(query, limit)
Search open grant opportunities in the GrantSonar corpus (federal, state, and foundation grants). Uses semantic similarity over a plain-English description of the project or need, with a keyword fallback. Returns title, agency, deadline, award amounts, similarity score, and a GrantSonar URL per hit.
Input Schema
{
"type": "object",
"properties": {
"query": {
"type": "string",
"description": "Plain-English description of the project, organization, or funding need (e.g. \"after-school STEM programs for rural Missouri students\")."
},
"limit": {
"type": "integer",
"description": "Maximum number of results (1-25, default 10).",
"minimum": 1,
"maximum": 25
}
},
"required": [
"query"
]
}🟢get_grant(grant_id)
Fetch the full detail of a single grant opportunity by its GrantSonar grant_id (UUID), including synopsis, eligibility, deadlines, and award amounts.
Input Schema
{
"type": "object",
"properties": {
"grant_id": {
"type": "string",
"description": "GrantSonar grant UUID (from a search_grants result)."
}
},
"required": [
"grant_id"
]
}Community
Evidence