Marketstack for AI agents

Stock Data Real-Time, Intraday & Historical Market Data API providing access to 125,000+ tickers across 72+ stock exchanges worldwide Add an API key once and every agent you run can use it.

  • Connects with an API key
  • Ready to connect
  • Any MCP client
  • No card required

The route from an agent to Marketstack

Once Marketstack is set up in your workspace, any agent you run can reach it: a Spinrun agent, or Claude, ChatGPT and Cursor through one MCP endpoint. Every call passes through the Spinrun gateway, which sorts it by risk and writes it to the activity log.

By default, every change an agent makes in a connected app waits for your approval, on every plan. Enhanced Control, on Pro and up, adds per-app read, write and destructive rules at the gateway.

Marketstack in the catalog

Stock Data Real-Time, Intraday & Historical Market Data API providing access to 125,000+ tickers across 72+ stock exchanges worldwide · Developer Tools & DevOps

  1. An agent gets a jobFrom chat, a schedule, or your own AI client
  2. Spinrun checks the callSorted as a read, a write or a destructive call
  3. Marketstack does the workThrough the connection you set up in your workspace
  4. Every call is loggedTool, outcome and duration, in one activity log

Three steps

From connection to first call

  1. Connect an app once

    Sign in from your workspace with OAuth or an API key. Spinrun keeps the credential in an encrypted vault, never in an agent's config.

  2. Decide what it may do

    By default, every change an agent makes in a connected app waits for your approval, on every plan. On Pro and up, Enhanced Control adds per-app rules for reads, writes and destructive calls.

  3. Let any agent use it

    Claude, ChatGPT, Cursor or a Spinrun agent reach the app through one MCP endpoint, and every call is written to the same activity log.

What it can do

Every Marketstack action, sorted by risk

Spinrun sorts every Marketstack action into one of three tiers. By default, agents ask before a write, on every plan; on Pro and up, the rules you set decide which tiers run.

  • Reads

    Read actions

    Fetch and search. Cannot change anything.

  • Writes

    Write actions

    Create and update. Changes data but does not remove it.

  • Destructive

    Destructive actions

    Delete, revoke, or overwrite. Hard or impossible to undo.

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Questions about Marketstack

You paste an Marketstack API key once. Spinrun keeps it in an encrypted vault rather than in an agent's config, and you can revoke it in one click.

Put Marketstack to work. Start free.

Connect Marketstack, decide what it may do, and give an agent its first job.

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