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/owlchart:owlchart-flow-api"

All apis

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

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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.

OpenAPI Specification

openapi: 3.2.0
info:
  title: OwlChart Flow API
  version: '2026-10-02'
  description: 'GENERATED FROM DOCUMENTATION by API Evangelist on 2026-10-02: 33 operation(s) read from 2 public documentation page(s) (each operation names its page in x-source). This is not the provider''s published contract; OwlChart has published no machine-readable contract that the pipeline could find. Engine: local.'
  x-evidence-tiers:
    code-example: 12
    documentation: 21
    pages-with-code: 2
    pages-read: 2
  x-generated-from: documentation
  x-provenance: generated
  x-authored-by: API Evangelist
  x-generated: '2026-10-02'
  x-generator: generate-contract-from-docs.py
  x-engine: local
  x-sources:
  - https://owlchart.com/wlfi-api.html
  - https://owlchart.com/developers.html
tags:
- name: Flow
paths:
  /api/flow/{flowid}:
    get:
      operationId: get_api_flow_flowid
      tags:
      - Flow
      summary: GET /api/flow/coins?syms=BTC,ETH,WLFI returns net taker flow in dollars per coin
      x-source: https://owlchart.com/developers.html
      parameters:
      - name: flowid
        in: path
        required: true
        schema:
          type: string
      - name: syms
        in: query
        required: true
        schema:
          type: string
        description: Comma‑separated list of coin symbols (up to 40).
      responses:
        '200':
          description: Success (status as documented)
      x-evidence:
        kind: documentation
        collapsed_from: 2 example path(s) differing only at flowId