Every API 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 apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.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 API
curl "https://apis.io/api/v1/apis/anew-mcp-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"
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.
openapi: 3.2.0
info:
title: anew MCP API
version: 1.0.0
summary: Encode self-contained HTML pages into shareable URLs.
description: anew turns a self-contained HTML document into a shareable URL.
license:
name: ISC
identifier: ISC
servers:
- url: https://anew.page
security:
- {}
tags:
- name: MCP
description: Model Context Protocol JSON-RPC endpoint.
paths:
/mcp:
post:
operationId: mcpRpc
tags:
- MCP
summary: MCP JSON-RPC endpoint
description: 'Accepts MCP methods: initialize, server/discover, tools/list, tools/call, resources/list, resources/read, resources/templates/list, prompts/list, prompts/get, ping. Dual-era: 2025-11-25 initialize-handshake clients and stateless 2026-07-28 clients (version and capabilities in params._meta, mirrored Mcp-* headers) are both served. Tools: anew_write, anew_read.'
parameters:
- name: MCP-Protocol-Version
in: header
required: false
schema:
type: string
enum:
- '2026-07-28'
- '2025-11-25'
description: Protocol revision. Omit it and the request is read as handshake-era; 2026-07-28 requires it, matching params._meta["io.modelcontextprotocol/protocolVersion"].
- name: Mcp-Method
in: header
required: false
schema:
type: string
description: Mirrors the body's method. Required on 2026-07-28 requests.
- name: Mcp-Name
in: header
required: false
schema:
type: string
description: Mirrors params.name (tools/call, prompts/get) or params.uri (resources/read). Required on 2026-07-28 requests for those methods.
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- jsonrpc
- method
properties:
jsonrpc:
const: '2.0'
id: {}
method:
type: string
params:
type: object
responses:
'200':
description: JSON-RPC response. Under 2025-11-25 a protocol error (-32601, -32602) is also a 200 carrying the error member; the 2026-07-28 era answers those with 400 and 404.
headers:
RateLimit-Policy:
description: 'The enforced quota, draft-ietf-httpapi-ratelimit-headers-11 form: "api";q=300;w=60 — 300 requests per 60 seconds per client IP, shared across /write, /mcp and /a2a/v1.'
schema:
type: string
content:
application/json:
schema:
$ref: '#/components/schemas/JsonRpcResponse'
'202':
description: Notification accepted (no body).
'400':
description: Parse error (-32700), batch or malformed envelope (-32600), header/body mismatch (-32020), unsupported protocol version (-32022), or invalid params (-32602).
content:
application/json:
schema:
$ref: '#/components/schemas/JsonRpcError'
'403':
description: 'A browser Origin that is opaque, insecure, or non-canonical (code origin_forbidden): any canonically serialized https origin is accepted; loopback deployments accept only loopback origins. Clients that send no Origin are never refused.'
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'404':
description: A method the 2026-07-28 revision does not define (-32601).
content:
application/json:
schema:
$ref: '#/components/schemas/JsonRpcError'
'405':
description: 'Wrong method (code method_not_allowed). Carries Allow: POST, OPTIONS.'
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'413':
description: Request body over 262144 bytes (code body_too_large).
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'429':
description: 'Over the published quota (code rate_limited). Carries Retry-After: 60, RateLimit-Policy, and RateLimit with r=0. Reading a page URL is not rate limited. Policy: https://anew.page/llms.txt'
headers:
RateLimit-Policy:
description: 'The enforced quota, draft-ietf-httpapi-ratelimit-headers-11 form: "api";q=300;w=60 — 300 requests per 60 seconds per client IP, shared across /write, /mcp and /a2a/v1.'
schema:
type: string
Retry-After:
description: Seconds to wait — always the full 60-second window, so one wait always clears the refusal.
schema:
type: integer
RateLimit:
description: 'draft-ietf-httpapi-ratelimit-headers-11 quota state at the moment of refusal: r=0 (exact) and t = the full window (an upper bound on the wait).'
schema:
type: string
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
components:
schemas:
JsonRpcResponse:
type: object
required:
- jsonrpc
description: 'A JSON-RPC 2.0 response: exactly one of result or error is present.'
properties:
jsonrpc:
const: '2.0'
id: {}
result:
type: object
error:
type: object
required:
- code
- message
properties:
code:
type: integer
message:
type: string
data:
description: Per-error detail — -32022 carries { supported, requested }.
JsonRpcError:
type: object
required:
- jsonrpc
- error
description: 'A JSON-RPC 2.0 error response: parse error -32700, invalid request -32600, method not found -32601, invalid params -32602, header mismatch -32020, unsupported MCP protocol version -32022, A2A version not supported -32009.'
properties:
jsonrpc:
const: '2.0'
id: {}
error:
type: object
required:
- code
- message
properties:
code:
type: integer
message:
type: string
data:
description: Per-error detail — -32022 carries { supported, requested }.
Error:
type: object
required:
- error
description: 'The envelope every REST failure answers with: a machine-readable code, a human-readable message, a hint where one helps, details where there is a measurement.'
properties:
error:
type: object
required:
- code
- message
properties:
code:
type: string
enum:
- not_found
- method_not_allowed
- origin_forbidden
- rate_limited
- empty_body
- invalid_utf8
- json_envelope
- url_over_budget
- content_too_large
- body_too_large
- markdown_failed
- content_blocked
description: Which failure this is. Stable across releases; a caller may switch on it exhaustively.
message:
type: string
hint:
type: string
description: What to do instead.
details:
type: object
description: 'On url_over_budget and content_too_large: both physical ceilings (url_limit = the 65,000-byte request line, decoded_limit = the 163,839-byte decode cap) and the overage against the one that tripped — these fire only past the ceilings, never at the 4,000-byte share-safe budget, which warns on a 200 instead. On body_too_large: the body budget, since the encode never ran and there is no url/decoded measurement to report.'
properties:
url_bytes:
type: integer
url_limit:
type: integer
decoded_bytes:
type: integer
decoded_limit:
type: integer
body_bytes:
type: integer
body_limit:
type: integer
over:
type: integer
externalDocs:
url: https://anew.page/llms.txt
description: 'Developer documentation: authentication, rate limits, versioning and deprecation policy, and every machine-readable resource.'