Agent402 Tools

Agent402 Tools provides a marketplace of over 500 pay‑per‑call AI tools and services, enabling developers to integrate crypto, DeFi, large language model gateways, speech, market data, and on‑chain functionalities into their applications. The platform offers skill packs, tool categories, and a unified API for accessing pricing, usage, and marketplace data, supporting both x402 and MCP server architectures. It aims to simplify AI agent development by offering a catalog of verified sellers, transparent pricing, and extensive documentation for quick integration.

Agent402 Tools publishes 2 API contracts indexed on the APIs.io network, including Agent402: 500+ pay-per-call tools for AI agents over x402 + MPP Api API, and 1 more. Tagged areas include Artificial Intelligence, Marketplace, Tools, Pay-per-call, and Integration.

The Agent402 Tools catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Agent402 Tools’ developer surface includes authentication, sandbox, pricing, documentation, changelog, engineering blog, getting-started guide, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.7/100 developing ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessFreemium

1 published contract

Artificial Intelligence Marketplace Tools Pay-per-call Integration

Kin Score

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

Composite quality — 46.7/100 · developing

Contract Quality 8.1 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 8.9 / 17

Operational Transparency 4.7 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 0 / 5

Well-Known Catalog 0 / 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 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 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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/agent402-tools/"><img src="https://apis.io/badge/agent402-tools/card.svg" alt="Agent402 Tools on APIs.io — Kin Score by API Evangelist"></a>

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

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)

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 37.9 — up to +15.5 composite points
Developer Ergonomics scores 50.0 — up to +10.0 composite points
Access Clarity scores 52.6 — up to +9.5 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/agent402-tools/apis.yml: open an issue on github.com/api-evangelist/agent402-tools 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 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.

Agent2Agent

measured — observed by APIs.io (conformant)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Agent402 Tools API

Agent402 provides a marketplace of over 500 pay‑per‑call AI tools via a unified API.

Agent402: 500+ pay-per-call tools for AI agents over x402 + MPP Api API

The open-source, self-hostable applied layer of Agentic Finance - agents paying and getting paid over x402 and MPP: 500+ machine-payable web tools for AI agents in one place (br...

Pricing Plans 1

Published pricing tiers and plan structures.

Agent402 Tools Plans Pricing

2 plans

PLANS

Semantic Vocabularies 1

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

Agent402 Tools Context

1 classes · 2 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Agent402 Tools API Rules

15 rules · 13 errors 1 warnings 1 info

SPECTRAL

JSON Schema 1

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

User

2 properties

JSON SCHEMA

Security Posture 3

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

Agent402 Tools Authentication

1 scheme

SECURITY

Agent402 Tools Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agent402 Tools Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Sandbox

Sandbox

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 8

Access & Security 5

Authentication, authorization, and security posture

Authentication

Authentication

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

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 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: agent402-tools
name: Agent402 Tools
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://agent402.tools/card.png?v=534
description: Agent402 Tools provides a marketplace of over 500 pay‑per‑call AI tools and services, enabling developers to
  integrate crypto, DeFi, large language model gateways, speech, market data, and on‑chain functionalities into their applications.
  The platform offers skill packs, tool categories, and a unified API for accessing pricing, usage, and marketplace data,
  supporting both x402 and MCP server architectures. It aims to simplify AI agent development by offering a catalog of verified
  sellers, transparent pricing, and extensive documentation for quick integration.
url: https://artifacts.apis.io/agent402-tools/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Artificial Intelligence
- Marketplace
- Tools
- Pay-per-call
- Integration
tags_raw:
- AI
- Marketplace
- Tools
- Pay-per-call
- Integration
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/agent402-tools-plans-pricing.yml
- type: Spectral
  url: rules/agent402-tools-rules.yml
- type: JSONLD
  url: json-ld/agent402-tools-context.jsonld
- type: Vocabulary
  url: vocabulary/agent402-tools-vocabulary.yml
- type: DataModel
  url: data-model/agent402-tools-data-model.yml
- type: Idempotency
  url: conventions/agent402-tools-conventions.yml
- type: Conventions
  url: conventions/agent402-tools-conventions.yml
- type: Authentication
  url: authentication/agent402-tools-authentication.yml
- type: ErrorCatalog
  url: errors/agent402-tools-problem-types.yml
- type: Conformance
  url: conformance/agent402-tools-conformance.yml
- type: LLMsTxt
  url: llms/agent402-tools-llms.txt
- type: AgentCard
  url: a2a/agent402-tools-a2a.yml
- type: SecurityTxt
  url: well-known/agent402-tools-security.txt
- type: WellKnown
  url: well-known/agent402-tools-well-known.yml
- type: Hosts
  url: hosts/agent402-tools-hosts.yml
- type: Vendors
  url: vendors/agent402-tools-vendors.yml
- type: TermsOfService
  url: https://agent402.tools/terms
- type: StatusPage
  url: https://agent402.tools/status
- type: Security
  url: https://agent402.tools/security
- type: Sandbox
  url: https://agent402.tools/playground
- type: PrivacyPolicy
  url: https://agent402.tools/privacy
- type: Pricing
  url: https://agent402.tools/pricing
- type: Documentation
  url: https://agent402.tools/docs
- type: ChangeLog
  url: https://agent402.tools/changelog
- type: Blog
  url: https://agent402.tools/blog
- type: GettingStarted
  url: https://agent402.tools/docs/Getting-Started
- type: APIReference
  url: https://agent402.tools/docs/API-Reference
- type: VulnerabilityDisclosure
  url: security/agent402-tools-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/agent402-tools-domain-security.yml
- type: Website
  url: https://agent402.tools/
apis:
- name: Agent402 Tools API
  description: Agent402 provides a marketplace of over 500 pay‑per‑call AI tools via a unified API.
  humanURL: https://agent402.tools/docs/API-Reference
  baseURL: https://agent402.tools
  properties: []
  aid: agent402-tools:agent402-tools-api
- aid: agent402-tools:agent402-500-pay-per-call-tools-for-ai-agents-over-x402-mpp-api-api
  name: 'Agent402: 500+ pay-per-call tools for AI agents over x402 + MPP Api API'
  description: 'The open-source, self-hostable applied layer of Agentic Finance - agents paying and getting paid over x402
    and MPP: 500+ machine-payable

    web tools for AI agents in one place (browser, search, PDFs, images, live data, payment helpers) - the whole catalog is
    open and runnable

    yourself. Each priced ope'
  humanURL: https://agent402.tools/docs/API-Reference
  baseURL: https://agent402.tools
  properties:
  - type: OpenAPI
    url: openapi/_original/agent402-tools-api-openapi.json
  - type: JSONSchema
    url: json-schema/agent402-tools-user-schema.json
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 25
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Agent402 Tools API — frequently asked questions

Does Agent402 Tools have an API?

Yes. APIs.io lists 2 APIs from Agent402 Tools, including Agent402 Tools API and Agent402: 500+ pay-per-call tools for AI agents over x402 + MPP Api API.

Is there an OpenAPI specification for the Agent402 Tools API?

Yes. APIs.io indexes 1 OpenAPI specification for Agent402 Tools, each linked for download from this page.

How do I authenticate with the Agent402 Tools API?

Agent402 Tools uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Agent402 Tools Authentication.

How much does the Agent402 Tools API cost?

APIs.io lists 2 pricing plans for Agent402 Tools, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Agent402 Tools API ready for AI agents?

Agent402 Tools has a Kin Score of 46.7 out of 100 (developing) and an Agent Readiness score of 22.8 (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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/agent402-tools"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/agent402-tools/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/agent402-tools/evidence"

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

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

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