Agent Nexus

Agent Nexus provides an infrastructure platform for AI agents, offering a public registry of APIs, MCP servers, and CLI tools that agents can discover and call without authentication. It supports free and paid tiers, with rate limits and monitoring, enabling developers to integrate and monetize agentic services. The service includes a searchable catalog, automated health checks, and drift alerts, aiming to simplify the creation and operation of AI-driven applications.

Agent Nexus is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Infrastructure, Registry, and Agents.

Agent Nexus’ developer surface includes documentation, sandbox, API reference, pricing, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.8/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessFreemium

1 API 1 MCP Servers

Company Artificial Intelligence Infrastructure Registry Agents Platform

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 29.8/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 10.7 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.5 / 10

Discoverability 5.5 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 0 / 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 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 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 5 / 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 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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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

8 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 23.8 — up to +15.2 composite points
Contract Governance scores 4.5 — up to +11.5 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/agentnexus-app/apis.yml: open an issue on github.com/api-evangelist/agentnexus-app 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 →

Standards implemented 3

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.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

APIs 1

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

Agent Nexus API

Public API for free key minting and registry access.

MCP Servers 1

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

Agent Nexus MCP Server

Remote MCP server at agentnexus.app.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Agentnexus App Plans Pricing

3 plans

PLANS

Security Posture 2

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

Agentnexus App Domain Security

TLSv1.3 · HSTS

SECURITY

Agentnexus App Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 6

Authentication, authorization, and security posture

Security

SecurityTxt

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: agentnexus-app
name: Agent Nexus
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  - security
  - sandbox
  generated: '2026-11-02'
  method: derived
image: https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/lovp_6azj38tkaw81pa6ecj0qapfbj2/df95917af844da4d059273e7804179d8_1793429071564.png
description: Agent Nexus provides an infrastructure platform for AI agents, offering a public registry of APIs, MCP servers,
  and CLI tools that agents can discover and call without authentication. It supports free and paid tiers, with rate limits
  and monitoring, enabling developers to integrate and monetize agentic services. The service includes a searchable catalog,
  automated health checks, and drift alerts, aiming to simplify the creation and operation of AI-driven applications.
url: https://artifacts.apis.io/agentnexus-app/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-01'
modified: '2026-11-01'
tags:
- Company
- Artificial Intelligence
- Infrastructure
- Registry
- Agents
- Platform
tags_raw:
- Company
- AI
- Infrastructure
- Registry
- Agents
- Platform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Documentation
  url: https://agentnexus.app/guides/api-fallbacks
- type: Plans
  url: plans/agentnexus-app-plans-pricing.yml
- type: Sandbox
  url: sandbox/agentnexus-app-sandbox.yml
- type: Security
  url: https://agentnexus.app/privacy
- type: Conformance
  url: conformance/agentnexus-app-conformance.yml
- type: LLMsTxt
  url: llms/agentnexus-app-llms.txt
- type: AgentCard
  url: a2a/agentnexus-app-a2a.yml
- type: MCPServer
  url: mcp/agentnexus-app-mcp.yml
- type: SecurityTxt
  url: well-known/agentnexus-app-security.txt
- type: SecurityTxt
  url: well-known/agentnexus-app-nothumansearch-security.txt
- type: SecurityTxt
  url: well-known/agentnexus-app-coworkingview-security.txt
- type: WellKnown
  url: well-known/agentnexus-app-well-known.yml
- type: Hosts
  url: hosts/agentnexus-app-hosts.yml
- type: Vendors
  url: vendors/agentnexus-app-vendors.yml
- type: StatusPage
  url: https://agentnexus.app/status
- type: APIReference
  url: https://agentnexus.app/llms.txt
- type: VulnerabilityDisclosure
  url: security/agentnexus-app-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/agentnexus-app-domain-security.yml
- type: Website
  url: https://agentnexus.app/
- type: Pricing
  url: https://agentnexus.app/pricing
- type: TermsOfService
  url: https://agentnexus.app/terms
- type: PrivacyPolicy
  url: https://agentnexus.app/privacy
apis:
- name: Agent Nexus API
  description: Public API for free key minting and registry access.
  humanURL: https://agentnexus.app/guides/api-fallbacks
  baseURL: https://agentnexus.app
  aid: agentnexus-app:agent-nexus-api
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 33
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Agent Nexus API — frequently asked questions

Does Agent Nexus have an API?

Yes. APIs.io lists 1 API from Agent Nexus, including Agent Nexus API.

How much does the Agent Nexus API cost?

APIs.io lists 3 pricing plans for Agent Nexus, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does Agent Nexus have an MCP server?

Yes. APIs.io lists 1 MCP server for Agent Nexus: Remote MCP server at agentnexus.app.

Is the Agent Nexus API ready for AI agents?

Agent Nexus has a Kin Score of 29.8 out of 100 (thin) and an Agent Readiness score of 22.2 (agent-aware), scored by API Evangelist on 2026-11-02.

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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