Grant opportunity
Open Payments SDK Grant Program 2026
Rolling grants for open-source tools and software that improve developer integration with the Open Payments API.
- Funder
- Interledger Foundation
- Open rolling call until the programme budget is fully awarded
- Open rolling call until the programme budget is fully awarded
- Award
- Awards from USD 1,000 to USD 25,000 depending on the technical workstream
- Applicant
- Individuals and organisations not subject to United States sanctions with relevant open-source software and payments expertise.
- Discipline
- Computer Science, Artificial Intelligence and Data Science
- Region
- Global
- Posted
- Jul 24, 2026
Call summary
Overview
The programme funds SDK generators, security libraries, language support and documentation that make Open Payments easier to integrate.
Who can apply
Any eligible individual or organisation may apply with a credible three- to twelve-month technical work plan and proportional budget.
What it supports
- GNAP support in OpenAPI and SDK generators.
- Rust, Ruby and other language tooling.
- HTTP Message Signatures, Arazzo and developer documentation.
Funding and duration
- Awards vary by theme from up to USD 1,000 to up to USD 25,000.
- Proposals are reviewed on an ongoing basis until the budget is committed.
Open rolling call until the programme budget is fully awarded
Open rolling call until the programme budget is fully awarded
How to apply
Review the technical themes and full specifications linked from the official Interledger page, then submit through its application portal.
Call details
Source-based overview
The Interledger Foundation invites developers and organisations to propose open-source work that improves the Open Payments developer experience, including SDK generation, security features and implementation documentation.
Eligibility
Any eligible individual or organisation may apply with a credible three- to twelve-month technical work plan and proportional budget.
Funding and benefits
Awards vary by theme from up to USD 1,000 to up to USD 25,000.
Proposals are reviewed on an ongoing basis until the budget is committed.
Themes and supported activities
GNAP support in OpenAPI and SDK generators.
Rust, Ruby and other language tooling.
HTTP Message Signatures, Arazzo and developer documentation.
Deadline and timeline
Open rolling call until the programme budget is fully awarded: Open rolling call until the programme budget is fully awarded.
Applicants should confirm the exact deadline time, time zone, required documents, portal steps and any institutional approvals on the official call page before submitting.
How to apply
Review the technical themes and full specifications linked from the official Interledger page, then submit through its application portal.
Before applying, check eligibility rules, budgets, attachments, page limits, partner requirements, cost-share conditions and whether the opportunity uses an expression of interest, full proposal, registration or nomination stage.