Best MCP server for stock data: four rivals, one table

Four calls, one table

The request below is the whole workflow. The agent resolves each symbol, makes one priced call per company, and then does the arithmetic locally — margins are divisions, and division is free. What you pay for is the filed numbers arriving as numbers.

That is a thirty-six point spread in gross margin between the top and bottom of one industry, and a net line that runs from the mid-fifties into negative territory. Whatever you think it means, the useful part is that it took four calls and no spreadsheet — and that the same four calls next quarter produce a diff rather than a memory.

The four traps in that table

The second trap is the fiscal calendar. "Latest annual" returned a year ending 25 January 2026 for one company and 27 December 2025 for two others. Those are different windows of the world, and in a fast-moving industry a month matters. The returned record carries the period end date, so the fix is simply to print it in the table — which is why it has a column above rather than a footnote.

The third is EPS. It is per share, and share counts, splits, and listing structures differ, so lining EPS up across companies compares the arithmetic of their share registers as much as their performance. It is in the response and it is useful within one company over time; across a peer set, margins and growth rates are the fields that mean the same thing for everybody.

The fourth trap is about definitions rather than values. A field named after a line on the income statement does not always mean exactly what the company means by that line — data providers normalise, and a figure can legitimately exclude an item the company includes in its own headline number. We checked one company in this table against its own results release: revenue, gross margin, net income, and EPS matched to the cent, while the operating line reflected a different treatment of one charge. Neither figure is wrong; they answer slightly different questions. That is why this table shows gross and net margin, and why the habit worth building is to reconcile one figure per source against the filing before you rely on the rest.

What the call actually returns

Fifteen fields per statement: symbol, period end, fiscal year, period, reporting currency, filing date, accepted date, revenue, cost of revenue, gross profit, operating income, net income, EPS, diluted EPS, and EBITDA. Ask for several years and you get several records, which is where growth rates come from — our four-year pull for one company showed revenue more than doubling and then growing another sixty-five percent, with gross margin moving only a few points across the whole stretch.

Because it arrives as structured records rather than as a page, "rank these by operating margin and flag anything below twenty percent" is one more sentence to the agent. That is the practical difference between a data call and a screenshot, and it is the same argument the maps guide makes about business listings: numbers that arrive as numbers stay workable.

Building a peer set worth comparing

1. Print the period end, always

   Put the fiscal year-end in the table itself. A peer comparison where one company is a month ahead of the others is not wrong, but it should be visible rather than buried.

2. Lead with ratios, not totals

   Margins, growth rates, and returns are unit-free and survive currency differences. Revenue and EPS need a shared unit before they mean anything across a set.

3. Keep the raw responses

   Save the JSON next to whatever you write from it. Next quarter's pull then becomes a diff against a file rather than an argument about what the numbers were.

4. Re-run rather than remember

   At $0.01 per run for each company, refreshing the whole set costs less than the time spent wondering whether the table is stale.

Set it up once

npm install --global @actionway/cli@latest
actionway init
mkdir -p "$HOME/.claude/skills"
cp -R "$HOME/.actionway/skill/actionway" "$HOME/.claude/skills/actionway"

You need Node.js 20 or newer and an Actionway account. There is also a Remote MCP route if you would rather not install anything — same calls, same prices, added as a connector instead. Codex users copy the same folder into ~/.codex/skills/actionway, and the get started page lists the steps per client. Financial data calls are synchronous, so the answer arrives in the same reply rather than as a job to wait on, and an empty wallet stops a call before anything is charged.