GrantPulse Letter of Inquiry (LOI) Writer

{
  "type": "json",
  "errors": {
    "400": {
      "example": {
        "error": "funder parameter required"
      },
      "description": "Invalid or missing parameter(s) — required: funder, project. Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."
    },
    "402": {
      "description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
    },
    "500": {
      "example": {
        "error": "upstream_failed"
      },
      "description": "Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."
    }
  },
  "example": {
    "loi_text": "Dear [PROGRAM OFFICER NAME],\n\n...",
    "fit_notes": "Strong programmatic fit; geography untested...",
    "word_count": 512,
    "subject_line": "Letter of Inquiry: Digital Literacy for Rural Seniors",
    "alignment_points": [
      "Mirrors the funder's stated focus on aging and technology equity"
    ],
    "placeholders_to_fill": [
      "[FOUNDING YEAR]",
      "[NUMBER SERVED LAST YEAR]"
    ]
  }
}