Help a watchdog spot red flags in public procurement.
Tech partner

Public procurement is where corruption costs the most — and where the data to catch it is already public.
Single-bid awards, suspiciously split contracts, suppliers registered weeks before winning, the same directors behind competing bidders — the patterns are well known. But tender data is scattered across portals in inconsistent formats, and watchdogs screen it by hand, tender by tender.



Sep 1 26’
Challenge start
Build (31 days left)
Oct 1 26’
Deadline & Winners
What to build
Your Mission
Build an AI-powered solution that helps a journalist or civic watchdog screen public procurement for red flags at scale.
Your solution should turn scattered tender publications into a screened, prioritized stream: which awards deserve a closer look and why, with the evidence attached. How you solve it is up to you. Exa gives you the tenders parsed, the supplier networks linked, and new awards as they land; the rest is yours.
How to build
Master the Challenge.

Scope
What Success Looks Like
There is no single right solution. You could take the problem in many directions — pick a specific user, a clear decision, and make that experience work well.
Tip:
Don't try to solve the whole problem at once. Pick a specific jurisdiction, red-flag pattern, or investigation workflow, then make that experience work well.
Support:
Requirements
Technical Challenge
Think about how your solution will extract structured data from tender portals publishing in inconsistent formats, detect known red-flag patterns like single-bid awards and contract splitting, link suppliers to their directors and related companies, and prioritize what deserves human investigation with the evidence attached. These are opportunities to explore, not requirements you need to satisfy all at once.
Tip:
Your solution doesn’t need to be production-ready. We welcome everything from early prototypes to fully working implementations and ambitious technical explorations.
Support:


Use of tech
Recommended Tools
Exa provides a web retrieval layer that might be useful here. Exa's Contents API can extract tender data from procurement portals in any format, structured outputs normalize it into buyer, supplier, value, and bid count, Websets link suppliers to directors and related companies via the `company` index, and Monitors flag new awards matching risk patterns. Whether Exa fits your solution is up to you.
Tip:
Whether or not you use Exa in your solution is entirely up to you.
Resources:
- Exa API / SDK to getting started
- Exa documentation for search and retrieval
- Examples and implementation patterns
- Exa.ai
Discord channel for technical questions
Meet your mentors
Get a guidance from industry professionals.





Gain invaluable insights and support from seasoned experts who are passionate about driving positive change. Our mentors bring years of experience in tackling complex challenges, ready to share their knowledge and help you make a meaningful impact.
Sep 1 26’
Challenge start
Build (31 days left)
Oct 1 26’
Deadline & Winners
Jury Panel
Put your solution in front of hiring managers.
Receive valuable feedback and insights from hiring managers and industry experts.





Community recognition
Winner
The winning project will be featured on Drawerrr’s Winners page and receive support, and exposure to take the idea further.
Community recognition
Finalists
The two finalist projects will be featured on Drawerrr’s Finalists page and receive support to continue developing their ideas.
If you choose Exa as part of your tech stack, the winner and two finalists will receive Exa.ai credits, exposure through Exa’s developer community, and technical support to help develop their projects further.
Sep 1 26’
Challenge start
Build (31 days left)
Oct 1 26’
Deadline & Winners
FAQ
Everything you need to know about participating.
Who can participate?
Is there a participation fee?
How to get started?
- Create an account.
- Choose a challenge you would like to work on.
- Follow guides to solve the problem (solo or in a team).
- Submit your solution.
- Get the feedback from sustainability experts and results at the beginning of the each month.
Is there any deadlines?
Can I participate as part of a team?
How to obtain assistance from mentors?
Who will be evaluating submissions?
Are there any awards for the winners?
Can participants apply multiple times?
What happens after the challenge?
After challenge
Take it to the next level.
The Challenge graduates get the opportunity to connect with grant providers and organizations looking to pilot projects and take them to the next level.


