How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
2s

2s Watchers API

The watchers API from 2s — 27 operation(s) for watchers.

Documentation Provider Profile APIs.io OpenAPI GitHub

2s Watchers API is one of 114 APIs that 2s publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Watchers. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 27 operations across 27 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 1.

Requests are made against a single base URL, https://2s.io.

27 operations 27 paths 3 schemas 1 GET26 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1
Base URL
https://2s.io/mcp
Authentication
API Key
Contact
2s
Resource Areas
1

Authentication & Security 1

2s Watchers API declares 1 security scheme for authenticating requests. An API key is passed in the header as PAYMENT-SIGNATURE (x402Payment).

  • x402Payment — x402 protocol v2: base64-encoded PaymentPayload. Call any paid endpoint without auth to receive a 402 with a multi-network PaymentRequirements envelope. Sign f…

Paths & Operations 27

Across 27 paths, the API surfaces 27 operations — 1 GET, 26 POST. Each is listed below with its method, path, parameters, and response codes.

Watchers 27
POST
/api/watchers/business-earnings
WATCHER: get a signed callback around a US company's earnings
watchers_business-earnings 1 param body → 200400402405500502
POST
/api/watchers/cancel
Cancel an active watcher by watcherId - it stops watching
watchers_cancel 1 param body → 200400402405500502
POST
/api/watchers/company-news
WATCHER: get a signed callback when a new news article is
watchers_company-news 1 param body → 200400402405500502
POST
/api/watchers/crypto-address-activity
WATCHER: get a signed callback the moment a crypto address
watchers_crypto-address-activity 1 param body → 200400402405500502
POST
/api/watchers/dns
WATCHER: get a signed callback when a host's DNS records
watchers_dns 1 param body → 200400402405500502
POST
/api/watchers/earthquake
WATCHER: get a signed callback when USGS reports a new
watchers_earthquake 1 param body → 200400402405500502
POST
/api/watchers/fear-greed
WATCHER: get a signed callback when the Crypto Fear & Greed
watchers_fear-greed 1 param body → 200400402405500502
POST
/api/watchers/federal-register
WATCHER: get a signed callback when a new US Federal
watchers_federal-register 1 param body → 200400402405500502
POST
/api/watchers/flight-status
WATCHER: get a signed callback when a flight's status
watchers_flight-status 1 param body → 200400402405500502
POST
/api/watchers/fred-series
WATCHER: get a signed callback when a FRED economic series'
watchers_fred-series 1 param body → 200400402405500502
POST
/api/watchers/funding-rate
WATCHER: get a signed callback when a Hyperliquid
watchers_funding-rate 1 param body → 200400402405500502
POST
/api/watchers/fx-rate
WATCHER: get a signed callback when an FX pair crosses a
watchers_fx-rate 1 param body → 200400402405500502
POST
/api/watchers/gas-price
WATCHER: get a signed callback when EVM gas crosses a level
watchers_gas-price 1 param body → 200400402405500502
POST
/api/watchers/http-headers
WATCHER: get a signed callback when a website's HTTP
watchers_http-headers 1 param body → 200400402405500502
POST
/api/watchers/ioc-reputation
WATCHER: get a signed callback when an indicator of
watchers_ioc-reputation 1 param body → 200400402405500502
POST
/api/watchers/ipo
WATCHER: get a signed callback when a new US IPO appears on
watchers_ipo 1 param body → 200400402405500502
POST
/api/watchers/package-release
WATCHER: get a signed callback when a package publishes a
watchers_package-release 1 param body → 200400402405500502
POST
/api/watchers/paper
WATCHER: get a signed callback when a new academic paper
watchers_paper 1 param body → 200400402405500502
POST
/api/watchers/patent
WATCHER: get a signed callback when a new USPTO patent
watchers_patent 1 param body → 200400402405500502
POST
/api/watchers/prediction-market
WATCHER: get a signed callback when a Polymarket outcome's
watchers_prediction-market 1 param body → 200400402405500502
POST
/api/watchers/product-recall
WATCHER: get a signed callback when a new US product recall
watchers_product-recall 1 param body → 200400402405500502
POST
/api/watchers/sec-filing
WATCHER: get a signed callback when a US company files with
watchers_sec-filing 1 param body → 200400402405500502
GET
/api/watchers/status
Status of a watcher by watcherId: state
watchers_status 2 params → 200400402405500502
POST
/api/watchers/stock-price
WATCHER: get a signed callback when a US stock crosses a
watchers_stock-price 1 param body → 200400402405500502
POST
/api/watchers/token-price
WATCHER: get a signed callback when a crypto asset crosses
watchers_token-price 1 param body → 200400402405500502
POST
/api/watchers/weather-alert
WATCHER: get a signed callback when the US National Weather
watchers_weather-alert 1 param body → 200400402405500502
POST
/api/watchers/whois
WATCHER: get a signed callback when a domain's WHOIS
watchers_whois 1 param body → 200400402405500502

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are X402PaymentRequiredV2 (5 properties), Source (3 properties). Each schema is shown below with its type and property counts.

X402PaymentRequiredV2
object
x402 v2 PaymentRequired envelope. Pick any entry from accepts[], sign for that rail, retry with the PAYMENT-SIGNATURE header.
5 properties 2 required
Source
object
Provenance of the data: upstream provider, source URL, and license.
3 properties
CallMeta
object
Per-call meta envelope — endpoint id, cost, caller kind, settlement details.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

2s-io-watchers-api-openapi.yml Raw ↑

Other APIs 2s publishes across the network.

2s MCP Server
AE Profile APIs.io
2s A2A Agent
AE Profile APIs.io
2s Agent API
AE Profile APIs.io
2s Agriculture API
AE Profile APIs.io
2s AI API
AE Profile APIs.io
2s Airport API
AE Profile APIs.io
2s Aviation API
AE Profile APIs.io
2s Bank API
AE Profile APIs.io
2s Barcode API
AE Profile APIs.io
2s Batch API
AE Profile APIs.io
2s Bio API
AE Profile APIs.io
2s Bls API
AE Profile APIs.io
#Watchers
← Back to 2 APIs
API Details
ID
2s-io:2s-io-watchers-api
Base URL
https://2s.io/mcp
Docs
https://2s.io/discover
Provider
2s
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=2s-io-watchers-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/2s-io-watchers-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

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

Where this information came from

This is an independent, third-party profile of 2s Watchers API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.