API Development & Integrations for SaaS & Software Products
Enterprise prospects asking for an API and an SSO integration that does not exist, and deals stalling on it.
API development and integration work connects separate systems so data moves between them automatically. For a SaaS company, the work is judged on a qualified trial or demo that converts to a paid plan. A documented public API, webhooks for customers, and the integrations your sales team keeps losing deals over.
What is costing you money today
Enterprise prospects asking for an API and an SSO integration that does not exist, and deals stalling on it.
Treating sign-ups as the goal, so the site and the ads fill the funnel with people who will never pay and hide the real acquisition cost.
What changes once this is in place
A documented public API, webhooks for customers, and the integrations your sales team keeps losing deals over.
How saas & software products actually buys
Self-serve in a day, sales-assisted over one to three months with a security review and a procurement step near the end.
- The unit of value
- a qualified trial or demo that converts to a paid plan
- The common mistake
- Treating sign-ups as the goal, so the site and the ads fill the funnel with people who will never pay and hide the real acquisition cost.
- What we do instead
- Define the activation event that predicts payment, instrument it, and optimise acquisition against that instead of against sign-ups.
What it has to talk to
A build for a SaaS company is mostly integration work. These are the systems we expect to exchange data with:
- Stripe / billing
- Product analytics
- CRM & sequences
- Auth & multi-tenancy
- Data warehouse
The words your buyers actually use
Generic service copy loses to copy written in the vocabulary of the vertical. These are the terms that carry intent here, and the ones the pages we build are structured around:
- free trial
- pricing per seat
- integrations
- SOC 2
- onboarding
- churn
- self-serve vs demo
The rules this sits under
GDPR for any EU user, SOC 2 evidence demanded by enterprise buyers, and data-residency commitments that constrain where you deploy.
What you get
- Integration map — Every system, what it owns, what it needs, and where the truth lives for each entity. Most integration projects should start by deciding which system owns the customer record.
- API design — Resources, versioning, authentication, pagination, rate limits and error shapes, agreed before implementation.
- Implementation — REST or GraphQL endpoints in TypeScript, with validation at the boundary and types generated from the schema.
- Third-party integrations — CRM, ERP, Tally, payment gateways, WhatsApp Business API, courier and ad platform APIs — with credentials handled properly.
- Webhook handling — Signature verification, idempotency keys, a queue, retries with backoff and a dead-letter store you can replay from.
- Sync and reconciliation — Scheduled reconciliation that compares both systems and reports differences, because event-driven sync alone always drifts eventually.
- Monitoring and alerting — Failure alerts to the channel your team actually reads, with enough context to act rather than just to worry.
- Documentation — API reference, an integration runbook, and a page describing what to do when each integration fails — written for whoever is on duty, not for us.