Work with this as data
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.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/iturri-ai:iturri-ai-oi-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.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: Iturri Market Data Oi API
version: 0.3.0
description: 'Verified historical market data: quality-flagged OHLCV, leakage-safe feature matrices, training packs. Every bar carries a quality flag (0 verified, 1 raw, 2 reconciled, 3 interpolated, 4 disputed, 5 outage). Catalog discovery is free; data endpoints are x402-priced. Data and tooling only — never signals or financial advice. MCP endpoint for agents: POST /mcp. Payments: x402 v2 (USDC on Base) — priced routes return HTTP 402 with a PAYMENT-REQUIRED challenge header; pay and retry with PAYMENT-SIGNATURE. Subscriptions bypass per-call payment via ''Authorization: Bearer ''.'
contact:
email: source@iturri.ai
servers:
- url: https://iturri.ai
tags:
- name: Oi
paths:
/api/oi:
get:
operationId: getOpenInterest
summary: Open interest with per-row quality flags.
parameters:
- name: symbol
in: query
schema:
type: string
required: true
- name: tf
in: query
schema:
type: string
enum:
- 1h
- 5m
default: 1h
- name: start
in: query
schema:
type: string
- name: end
in: query
schema:
type: string
responses:
'200':
description: OK
content:
application/json: {}
tags:
- Oi
components:
securitySchemes:
subscription:
type: http
scheme: bearer
description: Subscription token from POST /api/subscribe. Covers metered routes; pack SKUs (/api/bundle) stay pay-per-sale.