MCP server

Catalyst evidence graph

ai.catalystproject/evidence-graph

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Findings on what compounds and supplements do in the body, with evidence strength, quote and paper.

Website Source

At a glance

Type

MCP server

Publisher

catalystproject.ai (verified by the MCP Registry)

Status

Working at last check

Tools

7

Token cost

About 2,886 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http evidence-graph https://catalystproject.ai/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.evidence-graph]
url = "https://catalystproject.ai/mcp"

Gemini CLI

{"mcpServers":{"evidence-graph":{"httpUrl":"https://catalystproject.ai/mcp"}}}

Cursor

{"mcpServers":{"evidence-graph":{"url":"https://catalystproject.ai/mcp"}}}

VS Code

{"servers":{"evidence-graph":{"type":"http","url":"https://catalystproject.ai/mcp"}}}

Antigravity

agy mcp add evidence-graph https://catalystproject.ai/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"evidence-graph","server_url":"https://catalystproject.ai/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"evidence-graph","server_url":"https://catalystproject.ai/mcp"}

Tools

• find_evidence ~578 tokens
  Use this when someone asks what a supplement, nutrient, drug, food compound or plant does in the body, or whether it affects something specific (for example "does magnesium help sleep?", "what is creatine shown to do?", "omega-3 and triglycerides"). Pass the substance (or an outcome such as "sleep")
• get_finding ~217 tokens
  One finding by its id (the last part of a permalink, /e/{id}): the claim, its evidence strength and what that level means, the verbatim quote, the study design and the paper, and evidence_strength_reasons: each rule that set the level, in order, and what the assessment does not weigh. Use it to expl
• get_findings ~599 tokens
  The curated study findings for one node: for a compound, organism or material, what it has been shown to affect; for an outcome, which compounds have been studied against it. summary lists everything the node has findings about, one row each, across ALL its findings and not only the rows returned. U
• get_reactions ~402 tokens
  Biochemical reactions from Rhea and Human-GEM that a compound is a substrate or product of, or that a protein catalyses or transports. Every row is assertion_class 'inferred': a reaction two public databases record, not a result anyone measured in a person. Present these as known biochemistry, never
• get_relations ~283 tokens
  What public reference databases (Reactome, UniProt, Rhea, ChEBI and others) record about a node: transporters, enzymes, pathways, expression. Every row is assertion_class 'inferred': a hypothesis about how a compound could act, not a result anyone measured in people. Present these as possible mechan
• reach ~616 tokens
  Breadth-first reachability through the reactions two public databases (Rhea, Human-GEM) record: what a compound could become, and through which reactions and enzymes, within up to 3 steps. Every route is assertion_class 'inferred': a hypothesis drawn from reference databases, never a measured or rep
• search_nodes ~191 tokens
  Search the Catalyst evidence graph by name or synonym (for example "magnesium", "vitamin D", "sleep", "creatine"). Returns node ids to pass to get_findings or get_relations. Each hit says how many findings it has, and hits with findings come first, so the first hit with findings above 0 is usually t

Browse

• Health and medicine

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