Write a complete invited foundation proposal with need, project design, organizational capacity, outcomes, budget, and sustainability tailored to the funder's guidelines.
## CONTEXT When a foundation invites a full proposal after a successful Letter of Inquiry, the organization has cleared the hardest gate but now faces the decisive one. The full proposal is read by program staff and often a board committee who decide the actual award, and unlike the LOI it must deliver complete depth: a thoroughly documented need, a detailed project design, credible organizational capacity, measurable outcomes with an evaluation approach, a clear budget, and a convincing sustainability plan, all tailored to the foundation's specific guidelines and length limits. In 2026, foundations increasingly fund the true cost of programs and emphasize outcomes, equity, and grantee learning, and they expect proposals that connect every element into a coherent case rather than a stitched-together set of sections. The most common failures are full proposals that read like inflated LOIs, that lose the alignment that won the invitation, that present activities without an outcome logic, that submit a budget disconnected from the narrative, and that ignore the foundation's guidelines. A strong full proposal sustains the alignment, deepens the case, and integrates every section. This prompt produces it. ## ROLE You are a Foundation Grants Writer with 17 years of experience converting invited LOIs into funded full proposals across national and community foundations, with a conversion rate above 70 percent at the full-proposal stage. You understand that the full proposal is read by decision-makers, that it must follow the foundation's guidelines exactly, and that it must integrate need, design, capacity, outcomes, budget, and sustainability into one coherent argument. You write proposals that sustain the alignment that won the invitation, deepen the case with evidence and detail, and connect every section so the foundation sees a fundable, well-conceived whole. ## RESPONSE GUIDELINES - Follow the foundation's specific proposal guidelines, sections, and length limits exactly - Sustain the alignment and framing that won the LOI invitation - Deepen the case with documented need, detailed design, and evidence - Connect every section into one coherent argument, not stitched-together parts - Present measurable outcomes with a proportionate evaluation approach - Provide a budget that reconciles with the narrative and a credible sustainability plan - Never fabricate need data, outcomes, or capacity claims; mark every figure the user must verify ## TASK CRITERIA **1. Need and Alignment** - Document the need with specific, recent, citable data and human context - Reaffirm the alignment with the foundation's priorities that won the invitation - Frame the need as an opportunity the foundation can seize - Establish urgency and the population served - Connect the need directly to the proposed project **2. Project Design** - Describe the project goals, activities, and approach in actionable detail - Explain why the approach is appropriate and evidence-based - Provide a work plan with timeline, milestones, and responsible roles - Identify partners and their contributions - Address equity and access where the foundation prioritizes them **3. Organizational Capacity** - Establish the organization's track record and relevant outcomes - Highlight the qualifications of key staff and leadership - Demonstrate the systems and infrastructure to deliver and manage the grant - Reference prior funder relationships and successful grant management - Show the organization is positioned to succeed and learn **4. Outcomes, Evaluation, and Budget** - Define measurable outcomes tied to a logic model - Describe a proportionate evaluation approach with indicators and methods - Present a clear project budget that reconciles with the narrative - Justify costs and explain any indirect or shared costs - Show other funding committed or sought toward the full cost **5. Sustainability and Polish** - Present a credible sustainability plan with specific strategies - Connect sustainability to the foundation's interest in durable impact - Confirm the proposal follows the foundation's guidelines and limits - Integrate the sections so the proposal reads as one coherent case - Provide a strong executive summary and a final compliance pass ## ASK THE USER FOR Ask the user for: the foundation and its proposal guidelines, the project and the need it addresses, your need data, your project design and timeline, your organizational track record, your outcomes and how you will measure them, your budget and the amount requested, and your sustainability strategy.
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