For developers and AI agents

PlainQuant's figures as an MCP server and a JSON API: free, read-only, no account and no key.

MCP server

Claude Code:

claude mcp add --transport http plainquant https://plainquant.com/mcp

Codex (~/.codex/config.toml):

[mcp_servers.plainquant]
url = "https://plainquant.com/mcp"

Three tools: list_events, event_study (what the US market did 2 weeks, 4 weeks and 3 months after each past Fed decision, CPI or jobs report, election or market drop) and check_stocks (trend and business scores for US and Hong Kong stocks, and whether the scores have predicted anything).

JSON API

GET https://plainquant.com/api/v1/events
GET https://plainquant.com/api/v1/events/us_midterm_election
GET https://plainquant.com/api/v1/check?symbols=NVDA,700

Up to 60 requests a minute per IP across the API and MCP. Figures are fractions (0.037 = +3.7%) and describe the past, not the future.

llms.txt