javier.org.uk
Demo · synthetic data

Nimbus Books

Accounting agents for startups with more entities than accountants.

BarcelonaFintechFounded 202414 people

Team

76

Two operators from a multi-entity finance team. Not famous. They have closed the books they are now automating.

Weight 30

Market

81

Every startup past Series A acquires a messy entity map. The pain is weekly. Halcyon’s customers described it unprompted.

Weight 25

Traction

64

€900k ARR, 22 logos, monthly logo growth still high, revenue concentration low. Depth per account is the question.

Weight 25

Moat

55

Low. The accounting integrations are work, not a wall. Distribution through Halcyon would matter more than the model.

Weight 20

Advance

Screened 5 Oct 2026Pre-written. The replay is simulated.

Summary

Nimbus closes the intercompany mess that Halcyon then plans on top of. ARR €900k, seed of €6m, Barcelona. Thesis fit is the strongest of the new screens. The memo should not talk itself into a term sheet before we see one month of retained close quality.

Why now

Halcyon customers are asking for the layer underneath the forecast. We can either own that layer or watch someone else sit in our accounts.

Product

Agents that reconcile entities, chase missing invoices, and draft the management pack. A human accountant remains the signer. The product is the chase and the tie-out, which is where the hours actually go.

Business

Per-entity pricing. €900k ARR across 22 logos is wide and shallow. Gross margin 80%. If net retention after month six is below 110%, the seed math breaks and this is a feature, not a firm.

Recommendation

Advance the screen. Elena to sit with two Halcyon customers who tried Nimbus and one who churned off a spreadsheet and back. If the tie-out sticks, book a partner meeting in November.