Introducing Ticker0

by Ticker0 Team

We're launching Ticker0 — an AI-first financial data provider that gives agents and developers instant access to stock and crypto market data through MCP, REST API, and CLI.

The Problem

Financial data APIs were built for dashboards and spreadsheets, not for AI agents. When an agent needs to look up a stock price, analyze a portfolio, or compare crypto assets, it hits walls that traditional APIs were never designed to handle:

  • Rigid endpoints that require knowing the exact query structure upfront
  • No tool discovery — agents can't browse what's available
  • Unstructured responses that need custom parsing for every provider
  • No cost controls — a runaway agent loop can burn through rate limits in seconds

AI agents need financial data delivered in a way they can actually use.

Three Ways to Access Ticker0

We built Ticker0 around three access methods, each designed for a different workflow.

MCP Server

Connect any MCP-compatible agent — Claude, Cursor, Windsurf, or your own — directly to live market data. The agent discovers available tools automatically, calls them with natural parameters, and gets structured responses it can reason over immediately. No glue code required.

REST API

A clean, conventional REST API for when you need direct integration. Every endpoint returns consistent JSON with typed fields, pagination, and predictable error codes. Build trading bots, portfolio trackers, or data pipelines with straightforward HTTP calls.

CLI

Query market data from your terminal. Pipe output into scripts, combine with other tools, or use it interactively while debugging. The CLI is designed for developers who think in terminals.

Why AI-First Matters

Being "AI-first" isn't a marketing label — it changes how the product is built.

Progressive tool discovery. Instead of handing an agent a 200-page API reference, Ticker0's MCP server exposes tools that agents can browse and understand contextually. An agent asking about Bitcoin finds crypto tools. An agent analyzing earnings finds fundamental data tools.

Structured output by default. Every response is designed to be consumed by language models — consistent schemas, clear field names, and no HTML or markup mixed into data fields.

Cost controls built in. Set spending limits, throttle request rates per agent, and get alerts before costs spike. Agents make mistakes. Your bill shouldn't suffer for it.

Getting Started

Get up and running in under a minute:

  1. Sign up at ticker0.com and grab your API key
  2. Install the CLI or configure the MCP server in your agent
  3. Query — ask for a stock quote, pull crypto prices, or let your agent explore
# Install the CLI
npm install -g ticker0

# Get a quote
ticker0 quote AAPL

# Or configure MCP in your agent
ticker0 mcp setup

What's Next

We're actively building out coverage across more asset classes, adding historical data endpoints, and expanding the MCP tool surface. Screeners, watchlists, and portfolio analytics are on the near-term roadmap.

Star us on GitHub and let us know what data your agents need.