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API Audit · Bristol

API Audit in Bristol

An API audit for Bristol organisations, starting from the question that governs everything else — who is calling this, and would you know if you broke them. An interface whose consumers cannot be enumerated cannot be changed safely, which is why so many teams are maintaining endpoints they suspect nobody uses.

Why this comes up

The problem

Nobody can say which partners depend on the older endpoints, so nothing has been changed or removed in three years.

What you get

What we deliver

  • Consumers identified from traffic, keys and logs rather than from memory
  • Endpoints ranked by real usage, exposing what is genuinely dead
  • Versioning approach reviewed, including how a breaking change would be handled
  • Authentication examined — key age, rotation, scope and what a leaked key permits
  • Rate limiting and abuse protection checked at the edge
  • Documentation compared against actual behaviour, since these drift apart quickly

Want this scoped for your business in Bristol?

Thirty minutes, no charge, no sales script. You leave with a written summary of what api audit would actually involve — whether or not you use us.

Book a 30-minute call

Working in Bristol

South West

Bristol combines aerospace engineering with one of the country's strongest creative and environmental-tech scenes, and clients here are more likely than most to ask hard questions about sustainability and data ethics.

Engineering-grade requirements from aerospace clients, and brand-led digital work from the creative and environmental sectors.

Sectors we work with in Bristol

  • Aerospace
  • Creative & Media
  • Technology
  • Financial Services
  • Environmental

What we work with

Technologies and platforms

  • OpenAPI
  • Kong
  • Cloudflare
  • Postman

Who we work with

Industries we serve

  • SaaS businesses
  • Financial services
  • Logistics
  • Retail technology
  • Healthcare technology

Why us

Why Bristol businesses choose Asionis

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

How we work

  1. Step 1

    Free consultation

    A 30-minute call to understand the problem. You keep the written summary either way.

  2. Step 2

    Proposal

    Scope, timeline and a fixed price, in writing, before anything starts.

  3. Step 3

    Build

    Short cycles with regular check-ins, so you see progress rather than hear about it.

  4. Step 4

    Launch and support

    We handle the go-live and stay available afterwards.

API Audit in Bristol — common questions

How are unknown consumers found?
Through the traffic itself. Access logs, key usage and user agent patterns identify who is actually calling and how often, which usually reveals both integrations nobody documented and partners still using an endpoint that was deprecated years ago.
Why does key rotation come up?
Because keys issued at integration time tend to live forever. A credential given to a partner five years ago, still valid, possibly shared internally with people who have since left, is a standing exposure — and rotating it requires knowing who holds it, which is why the consumer inventory comes first.
What if documentation and behaviour disagree?
Assume integrators have built against the behaviour. Once a discrepancy exists, someone somewhere depends on what the API actually does rather than what the documentation claims, so correcting the documentation is safe and correcting the behaviour may not be.
Can we remove unused endpoints?
Once you can demonstrate they are unused, yes — and the demonstration is the whole difficulty. A period of monitoring, a deprecation notice to identified consumers and a defined removal date turns an indefinite maintenance obligation into a scheduled piece of work, which is usually the main reason this audit pays for itself.
Do you work with businesses across Bristol?
Yes. We are based in Leicester, United Kingdom and work with clients throughout South West, including Bristol and the surrounding Bristol area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
What kind of Bristol businesses do you usually work with?
Engineering-grade requirements from aerospace clients, and brand-led digital work from the creative and environmental sectors. Beyond that we work across Aerospace, Creative & Media, Technology, Financial Services and Environmental.
Do you cover the areas around Bristol?
Yes — we work throughout South West, including Cardiff, Bath, Southampton. Bristol is an urban area of roughly 700,000+, and we take on work across the wider Bristol region rather than the city boundary alone.

Talk to us about API Audit in Bristol

A 30-minute call with someone who would actually work on it. No sales script, no obligation.

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

Or reach us directly

07707 771599admin@asionis.com

Leicester, United Kingdom