RR-AgentInsights › API vs MCP: Two Paradigms for Quantitative Data Access

API vs MCP: Two Paradigms for Quantitative Data Access

There are now two ways to wire quant research to data: classical HTTP REST API (your program calls it) and MCP — Model Context Protocol (let an LLM discover and call tools directly). They are complementary, not competitors. Here is how to choose.

The classical path: HTTP API

Your code calls endpoints, parses JSON, handles auth:

r = requests.get(
    "https://reachrich.ai/api/market/quote",
    params={"code": "600519"},
    headers={"Authorization": "Bearer ..."},
)

The new path: MCP

Model Context Protocol (Anthropic, late 2024) is an open standard that lets LLMs discover and invoke tools directly. For quant data:

Strengths: research-exploratory, conversation-driven, no programming barrier, composable across multiple MCP tools (data + execution + visualization). Best for: ad-hoc research, LLM agent workflows, prototyping.

Not replacement — layered access

Layer Mechanism User
Programmatic HTTP REST Production strategies, automation
Conversational MCP Researchers, LLM agents

ReachRich provides both: REST with token auth + MCP for direct Claude / Cursor / Cline access, sharing the same data contract.

Security & rate-limiting

Both paths need quotas, auth, and audit. Quant data is a commercial asset — bare endpoints invite scraping and abuse. Design with rate limits, per-key quotas, and per-tool MCP permissions from day one.