GrantsDue for Claude — ask Claude about every open federal grant

Things you can ask

“What federal grants could a small food-bank nonprofit in Nevada apply for before the end of the year?”
“Pull up everything on the USDA community food projects grant — award sizes, deadline, and how many awards they actually make in a typical year.”
“How hard is it to win an NSF SBIR grant as a first-time company?”

Claude decides which lookup to run, pulls current data, and cites what it found. Every answer is grounded in the same database that powers this site — not the model's memory.

Set it up (about two minutes)

Claude Desktop or claude.ai (paid plans):

Open Settings → Connectors → Add custom connector
Name it GrantsDue and paste https://grantsdue.com/mcp
That's it — ask a grant question in any chat.

Claude Code (terminal):

claude mcp add --transport http grantsdue https://grantsdue.com/mcp

Custom connectors require a paid Claude plan; the connector itself is free. Using Cursor or another MCP client? The standard config JSON is on the builder docs page.

What it can and can't answer

It covers: every open federal grant (the full daily grants.gov extract), full opportunity detail, upcoming deadlines, public award history where it exists (USAspending program aggregates), and SBIR/STTR selection rates, Phase I→II conversion, and first-timer vs incumbent shares by agency.
It does not cover: state, local, or private foundation grants.
It will not invent odds: no agency publishes applicant counts for regular grants, so no success rate exists and Claude will say so. SBIR selection rates are the exception — the SBA publishes those.
It's read-only data, not application help or legal advice — and it's rate-limited, which is plenty for conversation but not for bulk scraping.

Built by GrantsDue, the free deadline-sorted database of every open federal grant. Questions: anthony@grantsdue.com.