corsproxy-dev

corsproxy.dev provides a managed CORS relay service that enables browsers to call third‑party APIs without building their own proxy infrastructure. It offers API keys, rate limits, request logs, a dashboard, and an open‑source self‑hosted relay. Free tier gives 500 requests per day, with paid plans for higher volume and enterprise features. The service includes documentation, status page, blog, and open source code on GitHub.

corsproxy-dev publishes 3 API contracts indexed on the APIs.io network: Health API, MCP API, and Proxy API. Tagged areas include Company, CORS, Proxy, API, and Developer Tools.

The corsproxy-dev catalog on APIs.io includes 1 Spectral governance ruleset.

corsproxy-dev’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, support, signup flow, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

59.2/100 strong Agent 35/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers

Company CORS ProxyAPIDeveloper Tools Open Source

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 59.2/100 · strong

Contract Quality 9.5 / 21

Developer Ergonomics 10.5 / 17

Access Clarity 10.8 / 17

Operational Transparency 5.6 / 11

Contract Governance 6.4 / 10

Discoverability 5.5 / 9

Regulatory Posture 4.6 / 15

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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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Agent readiness — checks not met, largest first (exact, from this profile):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 44.9 — up to +13.8 composite points
Developer Ergonomics scores 61.9 — up to +7.6 composite points
Access Clarity scores 63.7 — up to +7.3 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/corsproxy-dev/apis.yml: open an issue on github.com/api-evangelist/corsproxy-dev 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 →

APIs 3

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

corsproxy-dev Health API

The health API from corsproxy-dev — 1 operation(s) for health.

corsproxy-dev MCP API

Remote MCP server for AI assistants and agents.

corsproxy-dev Proxy API

The Proxy API from corsproxy-dev — 2 operation(s) for proxy.

MCP Servers 1

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

corsproxy-dev MCP Server

Remote MCP server at api.corsproxy.dev requiring an API key.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Corsproxy Dev Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Corsproxy Dev Rate Limits

1 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

corsproxy-dev API Rules

6 rules · 4 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

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

Corsproxy Dev Authentication

1 scheme

SECURITY

Corsproxy Dev Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Corsproxy Dev Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Corsproxy Dev Agentic Access

6 operations · 3 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

LLMsTxt

MCPServer

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

Conventions

Lifecycle

ErrorCatalog

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Postman

Postman

Access & Security 5

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: corsproxy-dev
name: corsproxy-dev
description: corsproxy.dev provides a managed CORS relay service that enables browsers to call third‑party APIs without building
  their own proxy infrastructure. It offers API keys, rate limits, request logs, a dashboard, and an open‑source self‑hosted
  relay. Free tier gives 500 requests per day, with paid plans for higher volume and enterprise features. The service includes
  documentation, status page, blog, and open source code on GitHub.
url: https://artifacts.apis.io/corsproxy-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- CORS
- Proxy
- API
- Developer Tools
- Open Source
image: https://corsproxy.dev/logo-mark.svg
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/corsproxy-dev-agentic-access.yml
- type: RateLimits
  url: rate-limits/corsproxy-dev-rate-limits.yml
- type: Plans
  url: plans/corsproxy-dev-plans-pricing.yml
- type: Spectral
  url: rules/corsproxy-dev-rules.yml
- type: Vocabulary
  url: vocabulary/corsproxy-dev-vocabulary.yml
- type: Conventions
  url: conventions/corsproxy-dev-conventions.yml
- type: Security
  url: https://corsproxy.dev/blog/cors-proxy-security
- type: Authentication
  url: authentication/corsproxy-dev-authentication.yml
- type: Lifecycle
  url: lifecycle/corsproxy-dev-lifecycle.yml
- type: ErrorCatalog
  url: errors/corsproxy-dev-problem-types.yml
- type: LLMsTxt
  url: llms/corsproxy-dev-llms.txt
- type: MCPServer
  url: mcp/corsproxy-dev-mcp.yml
- type: SecurityTxt
  url: well-known/corsproxy-dev-security.txt
- type: WellKnown
  url: well-known/corsproxy-dev-well-known.yml
- type: Hosts
  url: hosts/corsproxy-dev-hosts.yml
- type: Vendors
  url: vendors/corsproxy-dev-vendors.yml
- type: DeveloperPortal
  url: https://api.corsproxy.dev`
- type: VulnerabilityDisclosure
  url: security/corsproxy-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/corsproxy-dev-domain-security.yml
- type: Website
  url: https://corsproxy.dev/
- type: Documentation
  url: https://corsproxy.dev/docs/
- type: APIReference
  url: https://corsproxy.dev/openapi.yaml
- type: GettingStarted
  url: https://corsproxy.dev/docs/
- type: Blog
  url: https://corsproxy.dev/blog/
- type: GitHubOrganization
  url: https://github.com/melihbirim
- type: TermsOfService
  url: https://corsproxy.dev/legal/terms/
- type: PrivacyPolicy
  url: https://corsproxy.dev/legal/privacy/
- type: Support
  url: https://corsproxy.dev/about/
- type: SignUp
  url: https://app.corsproxy.dev/auth/login
- type: Postman
  url: https://corsproxy.dev/corsproxy.postman_collection.json
- type: Pricing
  url: https://corsproxy.dev/compare/
- type: StatusPage
  url: https://corsproxy.dev/status/
apis:
- aid: corsproxy-dev:corsproxy-dev-health-api
  name: corsproxy-dev Health API
  description: The health API from corsproxy-dev — 1 operation(s) for health.
  humanURL: https://corsproxy.dev
  baseURL: https://api.corsproxy.dev
  tags:
  - health
  properties:
  - type: OpenAPI
    url: openapi/corsproxy-dev-health-api-openapi.yml
- aid: corsproxy-dev:corsproxy-dev-mcp-api
  name: corsproxy-dev MCP API
  description: Remote MCP server for AI assistants and agents.
  humanURL: https://corsproxy.dev
  baseURL: https://api.corsproxy.dev
  tags:
  - mcp
  properties:
  - type: OpenAPI
    url: openapi/corsproxy-dev-mcp-api-openapi.yml
- aid: corsproxy-dev:corsproxy-dev-proxy-api
  name: corsproxy-dev Proxy API
  description: The Proxy API from corsproxy-dev — 2 operation(s) for proxy.
  humanURL: https://corsproxy.dev
  baseURL: https://api.corsproxy.dev
  tags:
  - Proxy
  properties:
  - type: OpenAPI
    url: openapi/corsproxy-dev-proxy-api-openapi.yml
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

corsproxy-dev API — frequently asked questions

Does corsproxy-dev have an API?

Yes. APIs.io lists 3 APIs from corsproxy-dev, including corsproxy-dev Health API, corsproxy-dev MCP API and corsproxy-dev Proxy API.

Is there an OpenAPI specification for the corsproxy-dev API?

Yes. APIs.io indexes 3 OpenAPI specifications for corsproxy-dev, each linked for download from this page.

How do I authenticate with the corsproxy-dev API?

corsproxy-dev uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Corsproxy Dev Authentication.

How much does the corsproxy-dev API cost?

APIs.io lists 1 pricing plan for corsproxy-dev, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does corsproxy-dev have an MCP server?

Yes. APIs.io lists 1 MCP server for corsproxy-dev: Remote MCP server at api.corsproxy.dev requiring an API key.

Is the corsproxy-dev API ready for AI agents?

corsproxy-dev has a Kin Score of 59.2 out of 100 (strong) and an Agent Readiness score of 35.1 (agent-ready), scored by API Evangelist on 2026-10-31.

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