GrantSonar MCP Server

by romulusfoundry Your server? Claim it

answering

GrantSonar is answering right now. Last checked 9 min ago. It exposes 9 tools.

Search verified-open US grants (federal, state, foundation). Read-only MCP for AI agents.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

376 ms

Response time

average over 24h

open, no key

Access

streamable-http

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add grantsonar --transport http https://grantsonar.com/api/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "grantsonar": {
      "url": "https://grantsonar.com/api/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.grantsonar]
url = "https://grantsonar.com/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "grantsonar": {
      "url": "https://grantsonar.com/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "grantsonar": {
      "url": "https://grantsonar.com/api/mcp"
    }
  }
}

Available tools 9

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

application

get_my_application

Fetch one of YOUR grant applications (status + every section draft) by application_id or grant_id. Requires your API key.

update_application_section

Write content into one section of YOUR grant application (replace or append). Requires your API key. The prior draft is snapshotted to version history first, so this is recoverable. Use get_my_application to see section_keys.

applications

list_my_applications

List YOUR organization's grant applications (id, grant title, status, document type, last updated). Requires your API key.

dismiss

dismiss_grant

Dismiss a grant from YOUR active feed, or restore it (dismissed=false). Reversible. Requires your API key.

draft

draft_application_section

Generate an AI first-draft for one section of YOUR application, grounded in the funding notice and your org profile, and save it into that section (prior content snapshotted first). Requires a paid API key. This is the only tool that runs the grant writer, so it is metered heavily. Returns the drafted text. Use get_my_application for section_keys.

grant

get_grant

Fetch the full detail of a single grant opportunity by its GrantSonar grant_id (UUID), including synopsis, eligibility, deadlines, and award amounts.

grants

search_grants

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.

matches

list_my_matches

List YOUR organization's scored grant matches — the same personalized matches shown on your GrantSonar dashboard. Requires your API key. Returns match tier, score, reasons, pipeline status, and a URL per grant.

save

save_grant

Save a grant to YOUR pipeline, or set its status to pursuing/applied. Reversible. Requires your API key. Mirrors the dashboard Save button.

Endpoints

URL	Transport	State	Latency	Checked
https://grantsonar.com/api/mcp	streamable-http	answering	1796 ms	9 min ago

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GrantSonar — questions

Answers built from our own checks of this server.

What can GrantSonar do?

It exposes 9 tools, read directly from the server on our last check. Among them: dismiss_grant, draft_application_section, get_grant, get_my_application, list_my_applications, list_my_matches and 3 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is GrantSonar working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 376 ms. The bar chart above shows every period we have measured.

Is GrantSonar still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect GrantSonar?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does GrantSonar need an API key?

No. GrantSonar completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 9 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is GrantSonar?

It answers our handshake in 376 ms on average, which is faster than 41% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.