x402 List API

An open, machine-readable, live-monitored directory of services that accept x402 protocol payments (HTTP 402 Payment Required). Self-described as agent-first, it exposes service listings, uptime metrics, pricing, facilitator settlement data, and rankings as JSON for autonomous agents, aggregators, and integrations.

x402 List API publishes 11 APIs on the APIs.io network, including Assess API, Changes API, Checks API, and 8 more. Tagged areas include x402, Crypto, 402, Agentic Payments, and API Directory.

The x402 List API catalog on APIs.io includes 1 Spectral governance ruleset.

x402 List API’s developer surface includes engineering blog, support, and 17 more developer resources.

58.4/100 strong ▬ flat Agent 38/100 agent ready Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
1 APIs 2 MCP Servers
x402Crypto402Agentic PaymentsAPI DirectoryRegistryAI AgentsBlockchainDeveloper ToolsUptime Monitoring

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Regulatory Posture applies to this provider. Its tags matched the Payments 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/x402-list-api: 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 11

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

x402 List API Assess API

On-demand paid AI assessment of a service shortlist (x402)

x402 List API Changes API

Change events detected on the live x402 wire: payTo rotations, price moves, and schema changes

x402 List API Checks API

Access monitoring check logs - the raw heartbeat of the x402 ecosystem

x402 List API Facilitators API

Independently on-chain-verified USDC settlement volume per x402 facilitator (multi-chain)

x402 List API Recommender API

Rank the best x402 service(s) for a need (the public HTTP recommender)

x402 List API Reference API

Reference data: supported networks, categories, and service tags

x402 List API Services API

Browse and query x402 services, their endpoints, uptime, and pricing

x402 List API Stats API

Aggregate statistics about the x402 ecosystem

x402 List API Status API

Get a quick health overview of all monitored services

x402 List API Submissions API

Submit new x402 services or facilitators for review and listing

x402 List API Suggestions API

Post paid suggestions for the directory (feedback in x402)

Scroll for all 11

MCP Servers 2

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

x402 List API MCP Server

x402 List ships a first-party MCP server in both shapes: a hosted Streamable HTTP endpoint at https://mcp.x402-list.com/mcp that answers tools/list anonymously, and a local stdi...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

X402 List Api Rate Limits

2 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

x402 List API API Rules

5 rules · 3 errors 2 warnings

SPECTRAL

Security Posture 3

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

X402 List Api Authentication

0 schemes

SECURITY

X402 List Api Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

X402 List Api Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 4

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 4

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
name: x402 List API
description: An open, machine-readable, live-monitored directory of services that accept x402 protocol payments (HTTP 402
  Payment Required). Self-described as agent-first, it exposes service listings, uptime metrics, pricing, facilitator settlement
  data, and rankings as JSON for autonomous agents, aggregators, and integrations.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - mcccsm/x402-list-mcp
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
image: https://x402-list.com/og-image.png
url: https://raw.githubusercontent.com/api-evangelist/x402-list-api/refs/heads/main/apis.yml
created: '2026-09-02'
modified: '2026-09-02'
specificationVersion: '0.21'
tags:
- x402
- Crypto
- 402
- Agentic Payments
- API Directory
- Registry
- AI Agents
- Blockchain
- Developer Tools
- Uptime Monitoring
tags_raw:
- x402
- crypto
- 402
- agentic-payments
- API directory
- registry
- AI agents
- blockchain
- developer tools
- uptime monitoring
apis:
- aid: x402-list-api:x402-list-api-assess-api
  name: x402 List API Assess API
  description: On-demand paid AI assessment of a service shortlist (x402)
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Assess
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-assess-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-changes-api
  name: x402 List API Changes API
  description: 'Change events detected on the live x402 wire: payTo rotations, price moves, and schema changes'
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Changes
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-changes-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-checks-api
  name: x402 List API Checks API
  description: Access monitoring check logs - the raw heartbeat of the x402 ecosystem
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Checks
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-checks-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-facilitators-api
  name: x402 List API Facilitators API
  description: Independently on-chain-verified USDC settlement volume per x402 facilitator (multi-chain)
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Facilitators
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-facilitators-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-recommender-api
  name: x402 List API Recommender API
  description: Rank the best x402 service(s) for a need (the public HTTP recommender)
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Recommender
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-recommender-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-reference-api
  name: x402 List API Reference API
  description: 'Reference data: supported networks, categories, and service tags'
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Reference
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-reference-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-services-api
  name: x402 List API Services API
  description: Browse and query x402 services, their endpoints, uptime, and pricing
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Services
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-services-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-stats-api
  name: x402 List API Stats API
  description: Aggregate statistics about the x402 ecosystem
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Stats
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-stats-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-status-api
  name: x402 List API Status API
  description: Get a quick health overview of all monitored services
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-status-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-submissions-api
  name: x402 List API Submissions API
  description: Submit new x402 services or facilitators for review and listing
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Submissions
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-submissions-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
- aid: x402-list-api:x402-list-api-suggestions-api
  name: x402 List API Suggestions API
  description: Post paid suggestions for the directory (feedback in x402)
  humanURL: https://x402-list.com/api
  baseURL: https://x402-list.com/api/v1
  tags:
  - Suggestions
  properties:
  - type: OpenAPI
    url: openapi/x402-list-api-suggestions-api-openapi.yml
  - type: Documentation
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: https://x402-list.com/llms.txt
  - type: LLMsTxt
    url: https://x402-list.com/llms-full.txt
  - type: DeveloperPortal
    url: https://x402-list.com/api
  - type: APIReference
    url: https://x402-list.com/api
  - type: GettingStarted
    url: https://x402-list.com/api
  - type: LLMsTxt
    url: llms/x402-list-api-llms.txt
  - type: ToolCrosswalk
    url: mcp/x402-list-api-tool-crosswalk.yml
  - type: Authentication
    url: authentication/x402-list-api-authentication.yml
  - type: ErrorCatalog
    url: errors/x402-list-api-problem-types.yml
  - type: RateLimits
    url: rate-limits/x402-list-api-rate-limits.yml
  - type: Plans
    url: plans/x402-list-api-plans-pricing.yml
  - type: Pricing
    url: https://x402-list.com/api
  - type: Conventions
    url: conventions/x402-list-api-conventions.yml
  - type: DataModel
    url: data-model/x402-list-api-data-model.yml
  - type: Lifecycle
    url: lifecycle/x402-list-api-lifecycle.yml
  - type: StatusPage
    url: https://x402-list.com/status
  - type: ChangeLog
    url: changelog/x402-list-api-changelog.yml
  - type: Conformance
    url: conformance/x402-list-api-conformance.yml
  - type: SpectralRules
    url: rules/x402-list-api-spectral.yaml
common:
- type: MCPServer
  url: https://mcp.x402-list.com/mcp
- type: MCPServer
  url: mcp/x402-list-api-mcp.yml
- type: Overlay
  url: overlays/x402-list-api-openapi-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: Website
  url: https://www.x402-list.com/
- type: VulnerabilityDisclosure
  url: security/x402-list-api-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/x402-list-api-domain-security.yml
- type: WellKnown
  url: well-known/x402-list-api-well-known.yml
- type: APICatalog
  url: https://x402-list.com/.well-known/api-catalog
- type: SecurityTxt
  url: well-known/x402-list-api-security.txt
- type: Security
  url: security/x402-list-api-vulnerability-disclosure.yml
- type: ContentSignal
  url: https://x402-list.com/robots.txt
- type: APIsJSON
  url: https://x402-list.com/.well-known/apis.json
- type: Packages
  url: packages/x402-list-api-packages.yml
- type: Blog
  url: https://x402-list.com/blog
- type: Support
  url: https://x402-list.com/contact
- type: TermsOfService
  url: https://x402-list.com/terms
- type: PrivacyPolicy
  url: https://x402-list.com/privacy
- type: GitHubRepository
  url: https://github.com/mcccsm/x402-list-mcp
maintainers:
- FN: Cosimo Miccolis
  org: x402 List
  email: info@x402-list.com
  url: https://x402-list.com
  X-role: operator and data controller (individual, Italy) — as declared in https://x402-list.com/.well-known/apis.json and
    https://x402-list.com/llms.txt
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 97
  at: '2026-09-02T09:37:38.394Z'
x-enrichment:
  date: '2026-09-02'
  status: enriched
  artifacts_added: 29
  pass: local-v1

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/x402-list-api"
All providers
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose
curl "https://apis.io/api/v1/providers/x402-list-api/operations?limit=25"
How their score was established
curl "https://apis.io/api/v1/providers/x402-list-api/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.

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