Yello

Yello is a Chicago-based talent acquisition software company, founded in 2008 (originally Recsolu), whose enterprise platform runs campus and early-career recruiting for roughly 100 Fortune 500 employers across 70+ countries and 15+ languages. The product line covers campus planning, recruitment events, candidate sourcing, interview scheduling, a recruitment CRM, recruitment analytics and an AI campus recruiting agent, plus Yello Government Recruiting Solutions (YGRS) for public-sector hiring and the WayUp candidate marketplace and Symba new-hire readiness products acquired by the company. Yello Enterprise is delivered as per-customer tenant sites on yello.co and recsolu.com in US (us-east-1) and EU (eu-west-1) environments. Its integration surface with ATS and HRIS systems (Workday, Taleo, Oracle Recruiting Cloud, iCIMS, SAP SuccessFactors, Greenhouse, ADP) is real but is sold and provisioned through a partner/sales conversation rather than a public developer portal. The one openly reachable machine surface found is a remote Model Context Protocol server on the WayUp property, published with RFC 8414 / RFC 9728 OAuth discovery.

Yello publishes 1 API on the APIs.io network. Tagged areas include Talent Acquisition, Recruiting, Human Resources, Campus Recruiting, and Applicant Tracking.

Yello’s developer surface includes engineering blog, support, signup flow, pricing, and 16 more developer resources.

37.1/100 thin Agent 28/100 agent aware Full breakdown ↓
scored 2026-09-04 · rubric v0.18.3
1 APIs 1 MCP Servers
Talent AcquisitionRecruitingHuman ResourcesCampus RecruitingApplicant TrackingRecruitment CRMInterview SchedulingJobsModel Context ProtocolGovernment

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-04 · rubric v0.18.3
Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector 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.
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/.
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/yello: 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 1

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

WayUp MCP Server

A remote Model Context Protocol (streamable HTTP) server operated by WayUp, a Yello company, at https://www.wayup.com/mcp. Discovered by probe: the host publishes RFC 9728 prote...

MCP Servers 1

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

Yello MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Yello Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Yello Rate Limits

0 limits

RATE LIMITS

Security Posture 3

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

Yello Authentication

oauth2 · 1 scheme

SECURITY

Yello Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Yello Trust Center

SOC 2, ISO 27001, FedRAMP

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Yello Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 3

Authentication, authorization, and security posture

Operate 3

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: yello
name: Yello
description: Yello is a Chicago-based talent acquisition software company, founded in 2008 (originally Recsolu), whose enterprise
  platform runs campus and early-career recruiting for roughly 100 Fortune 500 employers across 70+ countries and 15+ languages.
  The product line covers campus planning, recruitment events, candidate sourcing, interview scheduling, a recruitment CRM,
  recruitment analytics and an AI campus recruiting agent, plus Yello Government Recruiting Solutions (YGRS) for public-sector
  hiring and the WayUp candidate marketplace and Symba new-hire readiness products acquired by the company. Yello Enterprise
  is delivered as per-customer tenant sites on yello.co and recsolu.com in US (us-east-1) and EU (eu-west-1) environments.
  Its integration surface with ATS and HRIS systems (Workday, Taleo, Oracle Recruiting Cloud, iCIMS, SAP SuccessFactors, Greenhouse,
  ADP) is real but is sold and provisioned through a partner/sales conversation rather than a public developer portal. The
  one openly reachable machine surface found is a remote Model Context Protocol server on the WayUp property, published with
  RFC 8414 / RFC 9728 OAuth discovery.
image: https://yello.co/wp-content/uploads/2021/04/yello-logo@4x.png
url: https://raw.githubusercontent.com/api-evangelist/yello/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
position: Producing
specificationVersion: '0.20'
created: '2026-09-04'
modified: '2026-09-04'
tags:
- Talent Acquisition
- Recruiting
- Human Resources
- Campus Recruiting
- Applicant Tracking
- Recruitment CRM
- Interview Scheduling
- Jobs
- Model Context Protocol
- Government
apis:
- name: WayUp MCP Server
  description: 'A remote Model Context Protocol (streamable HTTP) server operated by WayUp, a Yello company, at https://www.wayup.com/mcp.
    Discovered by probe: the host publishes RFC 9728 protected-resource metadata naming the endpoint and RFC 8414 authorization-server
    metadata for it. The server is fully OAuth-gated - an unauthenticated tools/list returns HTTP 401 with a WWW-Authenticate
    Bearer challenge carrying resource_metadata - so the tool set and input schemas require authenticated introspection. No
    public documentation of this server was found.'
  humanURL: https://www.wayup.com/
  baseURL: https://www.wayup.com/mcp
  image: https://yello.co/wp-content/uploads/2021/04/yello-logo@4x.png
  tags:
  - Model Context Protocol
  - Jobs
  - Recruiting
  properties:
  - type: MCPServer
    url: mcp/yello-mcp.yml
  - type: Authentication
    url: authentication/yello-authentication.yml
  - type: OAuthScopes
    url: scopes/yello-scopes.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: TrustCenter
  url: security/yello-trust-center.yml
- type: Website
  url: https://yello.co/
- type: Blog
  url: https://yello.co/blog/
- type: Support
  url: https://yello.co/contact/
- type: SignUp
  url: https://yello.co/request-a-demo/
- type: Pricing
  url: https://yello.co/government-recruiting/how-to-buy/
- type: TermsOfService
  url: https://yello.co/msa/
- type: PrivacyPolicy
  url: https://yello.co/privacy-policy/
- type: StatusPage
  url: https://yello.statuspage.io/
- type: Compliance
  url: https://yello.co/trust-and-security/
- type: Lifecycle
  url: lifecycle/yello-lifecycle.yml
- type: WellKnown
  url: well-known/yello-well-known.yml
- type: Conformance
  url: conformance/yello-conformance.yml
- type: DomainSecurity
  url: security/yello-domain-security.yml
- type: Conventions
  url: conventions/yello-conventions.yml
- type: Plans
  url: plans/yello-plans-pricing.yml
- type: RateLimits
  url: rate-limits/yello-rate-limits.yml
- type: Packages
  url: packages/yello-packages.yml
- type: LLMsTxt
  name: WayUp llms.txt (published)
  url: llms/yello-wayup-llms.txt
- type: LLMsTxt
  name: Yello llms.txt (generated)
  url: llms/yello-llms.txt
x-enrichment:
  date: '2026-09-04'
  status: enriched
  artifacts_added: 17
  pass: local-v3

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.
All 92 tools →

Call it yourself

curl for this page
This provider
curl "https://apis.io/api/v1/providers/yello"
All providers
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose
curl "https://apis.io/api/v1/providers/yello/operations?limit=25"
How their score was established
curl "https://apis.io/api/v1/providers/yello/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.