Find Funders for Peer Orgs
find_funders_for_peersFull Description
Find grantmakers that have ACTUALLY funded organizations LIKE the caller's, using the real 7.5M-edge who-funds-whom grant graph (IRS 990-PF, 2022-2026). This is the strongest free-tier prospecting move: collaborative-filtering peer prospecting, distinct from search_funders (name/topic lookup) and search_open_grants (active RFPs).
HOW IT WORKS: for each peer organization, it looks up every foundation that granted to that peer, then merges funders across peers. A funder that gave to several of your peers ranks highest. Every result carries real grant evidence — which peers the funder funded and for how much.
INPUTS (provide one):
- peer_orgs (PREFERRED): names or 9-digit EINs of organizations LIKE the one
you're raising for — peers, aspirational orgs, or orgs with a similar mission. The graph is keyed by recipient EIN, so naming real peers yields the sharpest evidence. Up to 12 are used.
- org_description: a SHORT CAUSE PHRASE, not a paragraph — "food bank",
"mental health", "affordable housing". Fallback for when you cannot name peers: it matches the phrase against IRS BMF organization NAMES and, if that finds nothing, against the NTEE cause taxonomy, then uses the best-funded organizations in that cause (biased to location). It does NOT search mission text, so a LONGER description matches FEWER orgs, not more — keep it to the cause, and prefer peer_orgs. The response reports which pass produced the peers in peer_discovery.
RECOMMENDED WORKFLOW: establish the org's mission/cause, then name 2-5 peer organizations and call this tool. Deepen any candidate with get_funder_profile / get_foundation_grants (pass the returned ein).
Parameters (0 required, 5 optional)
limitintegerMaximum number of funders to return (1-50)
10locationstringOptional 2-letter state or "City, ST". Only biases peer discovery under org_description; never filters funders.
nullmin_amountintegerMinimum single-grant size in USD (default 5000)
5000org_descriptionstringShort cause phrase for the nonprofit (fallback). Example: "youth mental health". Adding words narrows the match.
nullpeer_orgsarrayNames or EINs of peer / aspirational organizations. Example: ["Greater Chicago Food Depository", "Feeding America"].
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