HumanLoop AI

HumanLoop AI builds a development platform for large language model (LLM) applications, enabling rapid, safe adoption of AI. The company provides tools for prompt management, evaluation, and monitoring, helping enterprises integrate LLMs responsibly. After being acquired by Anthropic in 2025, HumanLoop continues to support its existing customers while transitioning its platform. The team includes founders Raza, Jordan, and Peter, backed by investors such as Albion, Index, Y Combinator, and Local Globe.

HumanLoop AI is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Artificial Intelligence, LLM, Platform, and Development.

The HumanLoop AI catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

HumanLoop AI’s developer surface includes changelog, authentication, pricing, engineering blog, API reference, getting-started guide, documentation, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.3/100 developing Agent 28/100 agent aware Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

2 APIs 1 MCP Servers

Company Artificial Intelligence LLM Platform Development

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 47.3/100 · developing

Contract Quality 5.1 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 14.3 / 17

Operational Transparency 2.3 / 11

Contract Governance 3.6 / 10

Discoverability 4.8 / 9

Regulatory Posture 4.1 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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 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 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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It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/withhumanloopai/"><img src="https://apis.io/badge/withhumanloopai/card.svg" alt="HumanLoop AI on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

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 github.com/api-evangelist/withhumanloopai: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

HumanLoop API

HumanLoop API provides endpoints for LLM evaluation and prompt management.

HumanLoop AI API

HumanLoop AI API as documented publicly: 6 operations. Contract generated from the documentation by API Evangelist (2026-10-19); not the provider's own document.

MCP Servers 1

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

HumanLoop AI MCP Server

Remote MCP server at humanloop.com.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Withhumanloopai Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Withhumanloopai Context

6 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

HumanLoop AI API Rules

11 rules · 9 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetV5FlowsFl6O701G4Jmcanpvhxdqd0OResponse

15 properties

JSON SCHEMA

GetV5LogsPrvWu6Zx1Lawjrqoyl8NwuzkResponse

5 properties

JSON SCHEMA

GetV5LogsResponse

5 properties

JSON SCHEMA

GetV5ToolsTl789GhiResponse

13 properties

JSON SCHEMA

PostV5FlowsLogResponse

4 properties

JSON SCHEMA

PostV5ToolsLogResponse

4 properties

JSON SCHEMA

Security Posture 2

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

Withhumanloopai Authentication

1 scheme

SECURITY

Withhumanloopai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: withhumanloopai
name: HumanLoop AI
image: https://humanloop.com/assets/acquisition/humanloop-anthropic-green-white@3x.png
description: HumanLoop AI builds a development platform for large language model (LLM) applications, enabling rapid, safe
  adoption of AI. The company provides tools for prompt management, evaluation, and monitoring, helping enterprises integrate
  LLMs responsibly. After being acquired by Anthropic in 2025, HumanLoop continues to support its existing customers while
  transitioning its platform. The team includes founders Raza, Jordan, and Peter, backed by investors such as Albion, Index,
  Y Combinator, and Local Globe.
url: https://raw.githubusercontent.com/api-evangelist/withhumanloopai/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-19 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-19'
modified: '2026-10-19'
tags:
- Company
- Artificial Intelligence
- LLM
- Platform
- Development
tags_raw:
- Company
- AI
- LLM
- Platform
- Development
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/withhumanloopai-plans-pricing.yml
- type: Spectral
  url: rules/withhumanloopai-rules.yml
- type: JSONLD
  url: json-ld/withhumanloopai-context.jsonld
- type: Vocabulary
  url: vocabulary/withhumanloopai-vocabulary.yml
- type: DataModel
  url: data-model/withhumanloopai-data-model.yml
- type: ChangeLog
  url: changelog/withhumanloopai-changelog.yml
- type: Authentication
  url: authentication/withhumanloopai-authentication.yml
- type: Conformance
  url: conformance/withhumanloopai-conformance.yml
- type: LLMsTxt
  url: llms/withhumanloopai-llms.txt
- type: MCPServer
  url: mcp/withhumanloopai-mcp.yml
- type: WellKnown
  url: well-known/withhumanloopai-well-known.yml
- type: Hosts
  url: hosts/withhumanloopai-hosts.yml
- type: Vendors
  url: vendors/withhumanloopai-vendors.yml
- type: SDKs
  url: packages/withhumanloopai-packages.yml
- type: Packages
  url: packages/withhumanloopai-packages.yml
- type: TrustCenter
  url: https://trust.humanloop.com/
- type: TermsOfService
  url: https://humanloop.com/terms
- type: PrivacyPolicy
  url: https://humanloop.com/privacy
- type: Pricing
  url: https://humanloop.com/pricing
- type: Login
  url: https://app.humanloop.com/login
- type: GitHubOrganization
  url: https://github.com/humanloop
- type: ChangeLog
  url: https://humanloop.com/docs/changelog/2025/08
- type: Blog
  url: https://humanloop.com/blog
- type: APIReference
  url: https://humanloop.com/docs/reference/models
- type: GettingStarted
  url: https://humanloop.com/docs/getting-started/overview
- type: Documentation
  url: https://docs.humanloop.com/
- type: DomainSecurity
  url: security/withhumanloopai-domain-security.yml
- type: Website
  url: https://humanloop.com/
apis:
- name: HumanLoop API
  description: HumanLoop API provides endpoints for LLM evaluation and prompt management.
  humanURL: https://humanloop.com/docs/reference/models
  aid: withhumanloopai:humanloop-api
- aid: withhumanloopai:withhumanloopai-api
  name: HumanLoop AI API
  description: 'HumanLoop AI API as documented publicly: 6 operations. Contract generated from the documentation by API Evangelist
    (2026-10-19);

    not the provider''s own document.'
  humanURL: https://humanloop.com/docs/api/logs/get
  baseURL: https://api.humanloop.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/withhumanloopai-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/withhumanloopai-get-v5-flows-fl6-o701-g4-jmcanpvhxdqd0-oresponse-schema.json
  - type: JSONSchema
    url: json-schema/withhumanloopai-get-v5-logs-prv-wu6-zx1-lawjrqoyl8-nwuzk-response-schema.json
  - type: JSONSchema
    url: json-schema/withhumanloopai-get-v5-logs-response-schema.json
  - type: JSONSchema
    url: json-schema/withhumanloopai-get-v5-tools-tl789-ghi-response-schema.json
  - type: JSONSchema
    url: json-schema/withhumanloopai-post-v5-flows-log-response-schema.json
  - type: JSONSchema
    url: json-schema/withhumanloopai-post-v5-tools-log-response-schema.json
x-enrichment:
  date: '2026-10-19'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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