Atla

Atla builds frontier AI evaluation models (Selene) and Atla Insights, an observability platform for monitoring and improving AI agents. Its Insights Data API exposes OpenTelemetry-based traces and spans of instrumented agent runs — list with time-window and metadata filters, fetch multiple by ID, and retrieve a single trace with full spans, summaries, and custom metrics. Atla ships official Python and JavaScript SDKs and an MCP server. The company is UK-based and backed by Creandum. Note: the Atla Insights platform is scheduled to sunset on 16 February 2026, and the separate Selene evaluation API SDK and MCP server were archived in 2025.

Atla publishes 1 API contract indexed on the APIs.io network: SDK API. Tagged areas include Company, Software-as-a-Service, Artificial Intelligence, LLM Evaluation, and AI Agents.

The Atla catalog on APIs.io includes 1 Spectral governance ruleset.

Atla’s developer surface includes documentation, API reference, getting-started guide, support, authentication, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.7/100 thin ▬ flat Agent 26/100 agent aware Heartbeat 10/100 dormant Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Company Software-as-a-Service Artificial Intelligence LLM Evaluation AI Agents Observability Monitoring OpenTelemetry

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 34.7/100 · thin

Contract Quality 10.4 / 21

Developer Ergonomics 10.8 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.9 / 10

Discoverability 6.1 / 9

Regulatory Posture 2.3 / 15

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 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

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

5 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Contract Quality scores 49.0 — up to +12.8 composite points
Operational Transparency scores 2.6 — up to +12.7 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/atla/apis.yml: open an issue on github.com/api-evangelist/atla 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Hugging Face Hub Organisations	builds-on	36.4	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Atla SDK API

The SDK API from Atla — 3 operation(s) for sdk.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Atla Insights SDK API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Atla MCP Server

Official MCP server providing a standardized interface for LLMs to interact with the Atla API (Selene evaluation). Repository archived by the provider.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

Fetch and inspect Atla Insights traces

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Atla API Rules

44 rules · 42 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Atla Insights Overlay

2 actions · update · atla-insights-openapi.yaml

DERIVED

Security Posture 2

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

Atla Authentication

http · 1 scheme

SECURITY

Atla Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: atla
name: Atla
description: 'Atla builds frontier AI evaluation models (Selene) and Atla Insights, an observability platform for monitoring
  and improving AI agents. Its Insights Data API exposes OpenTelemetry-based traces and spans of instrumented agent runs —
  list with time-window and metadata filters, fetch multiple by ID, and retrieve a single trace with full spans, summaries,
  and custom metrics. Atla ships official Python and JavaScript SDKs and an MCP server. The company is UK-based and backed
  by Creandum. Note: the Atla Insights platform is scheduled to sunset on 16 February 2026, and the separate Selene evaluation
  API SDK and MCP server were archived in 2025.'
url: https://raw.githubusercontent.com/api-evangelist/atla/refs/heads/main/apis.yml
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://avatars.githubusercontent.com/atla-ai
x-type: company
x-source: vc-portfolio
x-backed-by:
- creandum
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-19
x-docs-hosting: vercel
tags:
- Company
- Software-as-a-Service
- Artificial Intelligence
- LLM Evaluation
- AI Agents
- Observability
- Monitoring
- OpenTelemetry
tags_raw:
- Company
- SaaS
- Artificial Intelligence
- LLM Evaluation
- AI Agents
- Observability
- Monitoring
- OpenTelemetry
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: atla:atla-sdk-api
  name: Atla SDK API
  description: The SDK API from Atla — 3 operation(s) for sdk.
  humanURL: https://docs.atla-ai.com/api-reference/overview
  baseURL: https://app.atla-ai.com
  tags:
  - SDK
  properties:
  - type: OpenAPI
    url: openapi/atla-sdk-api-openapi.yml
common:
- type: Overlay
  url: overlays/atla-insights-overlay.yaml
- type: DeveloperPortal
  url: https://docs.atla-ai.com/
- type: Documentation
  url: https://docs.atla-ai.com/
- type: APIReference
  url: https://docs.atla-ai.com/api-reference/overview
- type: GettingStarted
  url: https://docs.atla-ai.com/quickstart
- type: Support
  url: https://docs.atla-ai.com/troubleshooting-faq
- type: GitHubOrganization
  url: https://github.com/atla-ai
- type: Website
  url: https://www.atla-ai.com/
- type: Authentication
  url: authentication/atla-authentication.yml
- type: DomainSecurity
  url: security/atla-domain-security.yml
- type: Packages
  url: packages/atla-packages.yml
- type: SDKs
  url: packages/atla-packages.yml
- type: MCPServer
  url: mcp/atla-mcp.yml
- type: LLMsTxt
  url: llms/atla-llms.txt
- type: WellKnown
  url: well-known/atla-well-known.yml
- type: Conformance
  url: conformance/atla-conformance.yml
- type: ErrorCatalog
  url: errors/atla-problem-types.yml
- type: Lifecycle
  url: lifecycle/atla-lifecycle.yml
- type: Conventions
  url: conventions/atla-conventions.yml
- type: DataModel
  url: data-model/atla-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Atla API — frequently asked questions

Does Atla have an API?

Yes. APIs.io lists 1 API from Atla, including Atla SDK API.

Is there an OpenAPI specification for the Atla API?

Yes. APIs.io indexes 1 OpenAPI specification for Atla, each linked for download from this page.

How do I authenticate with the Atla API?

Atla uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Atla Authentication.

Does Atla have an MCP server?

Yes. APIs.io lists 1 MCP server for Atla: Official MCP server providing a standardized interface for LLMs to interact with the Atla API (Selene evaluation). Repository archived by the provider.

Is the Atla API ready for AI agents?

Atla has a Kin Score of 34.7 out of 100 (thin) and an Agent Readiness score of 25.7 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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