Kleio
Kleio is a Paris-headquartered agentic commerce platform for complex, high-value enterprise sales, founded in 2024 by Adrien Mathieu, Philippe Wellens and Louis Poirier and backed by a EUR 3M seed round. The platform pairs a domain-specific Knowledge Engine — a continuously updated representation of a company's catalog, pricing, business rules and ontologies — with a stack of orchestrated AI agents tuned for each stage of the sales funnel: discovery agents for intent qualification, product-guidance agents that reason over the catalog, quoting agents wired to configurators and pricing, and a Live Sales Copilot that augments human advisors in real time. Kleio deploys across web widgets, advisor desktops and third-party AI surfaces such as ChatGPT and Gemini via MCP/UCP integrations, with CRM and catalog write-back to Salesforce, HubSpot and custom systems. Named customers include Selectour, Havas Voyages, Showroomprive, Altarea Cogedim, Orpi and Emil Frey, across travel, real estate, automotive, wholesale, insurance, manufacturing and energy. Kleio publishes no public developer portal, API reference or OpenAPI: the platform API at api.kleio.ai is an OAuth-protected Google Cloud API Gateway reachable only to customers, and access begins with a sales conversation.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Kleio the way a machine reads it — 6 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Kleio scores 22.0/100 (emerging), with a separate agent-readiness read of 18/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Why this profile is thin
Kleio runs a real OAuth-protected platform API at api.kleio.ai — its Google Cloud API Gateway serves RFC 8414 authorization-server metadata naming an Auth0 issuer and a defined dynamic client registration route — but publishes no developer portal, API reference, OpenAPI or auth guide anywhere, and kleio.ai/pricing and kleio.ai/docs both 404, so the only route to the API is the "Request a Demo" form at kleio.ai/contact.
An API exists — we simply could not reach the contract without credentials or a sales conversation. This one is Kleio's to change: publishing the reference and a machine-readable spec at a public URL, while keeping key issuance behind whatever gate they like, would let an integrator evaluate the API before committing to a call.
What we probed
https://api.kleio.ai/.well-known/oauth-authorization-server→ HTTP 200https://api.kleio.ai/api/oauth/register→ HTTP 405https://api.kleio.ai/openapi.json→ HTTP 404https://www.kleio.ai/docs→ HTTP 404https://www.kleio.ai/pricing→ HTTP 404https://www.kleio.ai/contact→ HTTP 200
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-10-03 · rubric v0.23.0
Put this on your own site. The badge is drawn live from Kleio's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/kleio/"
title="Kleio on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/kleio.svg"
alt="Kleio Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/kleio/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/kleio/"
title="Kleio on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/kleio/card.svg"
alt="Kleio Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Kleio
Each block below is one kind of artifact we hold for Kleio. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 1
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Kleio Platform API
The Kleio platform API, served from api.kleio.ai behind a Google Cloud API Gateway and protected by OAuth 2.0 authorization-code + PKCE against an Auth0 tenant at auth.kleio.ai....
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Kleio Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Kleio Rate Limits
RATE LIMITSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Resources
Every other property we hold for Kleio — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/kleio · machine-readable index on apis.io
This is an independent, third-party profile of Kleio, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.