Trussle

Trussle was a UK‑based digital mortgage broker that helped homeowners find and manage mortgage products online. Founded in 2015, Trussle offered a streamlined, technology‑driven approach to mortgage advice and application. The company was later acquired and rebranded by Better.com, after which the original trussle.com domain redirects to Better.com’s UK site. While the original brand is no longer active, its legacy persists in the mortgage‑tech ecosystem, and this entry records the historic company information for reference.

Trussle is listed with 1 API on the APIs.io network. Tagged areas include Mortgage, FinTech, UK, Broker, and Digital.

Trussle’s developer surface includes signup flow, getting-started guide, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.3/100 emerging Agent 3/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

MortgageFinTechUKBrokerDigital

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 16.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 5.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.8 / 9

Regulatory Posture 2.0 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 19.0 — up to +16.2 composite points
Access Clarity scores 34.2 — up to +13.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/trussle-com/apis.yml: open an issue on github.com/api-evangelist/trussle-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Trussle GraphQL API

Trussle provides a GraphQL API at https://api.trussle.com/v1/graphql (authentication required).

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Trussle Com Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

GettingStarted

GettingStarted

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Newsroom

Newsroom

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: trussle-com
name: Trussle
image: https://better.co.uk/images/stacked-social.png
description: Trussle was a UK‑based digital mortgage broker that helped homeowners find and manage mortgage products online.
  Founded in 2015, Trussle offered a streamlined, technology‑driven approach to mortgage advice and application. The company
  was later acquired and rebranded by Better.com, after which the original trussle.com domain redirects to Better.com’s UK
  site. While the original brand is no longer active, its legacy persists in the mortgage‑tech ecosystem, and this entry records
  the historic company information for reference.
url: https://artifacts.apis.io/trussle-com/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Mortgage
- FinTech
- UK
- Broker
- Digital
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/trussle-com-hosts.yml
- type: Vendors
  url: vendors/trussle-com-vendors.yml
- type: SDKs
  url: packages/trussle-com-packages.yml
- type: Packages
  url: packages/trussle-com-packages.yml
- type: TermsOfService
  url: https://better.co.uk/terms
- type: SignUp
  url: https://better.co.uk/account/signup?application=eyJwcm9wZXJ0eURldGFpbHMiOnsib2ZmZXJBY2NlcHRlZCI6dHJ1ZX0sInB1cmNoYXNpbmdQdXJwb3NlIjoiUFVSQ0hBU0UiLCJwdXJjaGFzaW5nSW50ZW50Ijp7Im9mZmVyTWFkZSI6dHJ1ZSwib2ZmZXJTdGF0dXMiOiJBQ0NFUFRFRCJ9fQ==
- type: PrivacyPolicy
  url: https://better.co.uk/privacy
- type: Newsroom
  url: https://better.co.uk/press
- type: GettingStarted
  url: https://better.co.uk/get-started/remaining-term
- type: Website
  url: http://trussle.com
- type: DomainSecurity
  url: security/trussle-com-domain-security.yml
apis:
- name: Trussle GraphQL API
  description: Trussle provides a GraphQL API at https://api.trussle.com/v1/graphql (authentication required).
  humanURL: https://api.trussle.com
  baseURL: https://api.trussle.com
  aid: trussle-com:trussle-graphql-api
x-coverage:
  state: gated
  reason: partner-login
  detail: The GraphQL endpoint https://api.trussle.com/v1/graphql returns 401 Unauthorized, indicating authentication is required.
  evidence:
  - url: https://api.trussle.com/v1/graphql
    status: 401
  checked: '2026-10-29'
x-backed-by:
- seedcamp
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 9
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Trussle API — frequently asked questions

Does Trussle have an API?

Yes. APIs.io lists 1 API from Trussle, including Trussle GraphQL API.

Is the Trussle API ready for AI agents?

Trussle has a Kin Score of 16.3 out of 100 (emerging) and an Agent Readiness score of 2.9 (human-only), scored by API Evangelist on 2026-10-31.

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