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Syl Pulse

Official registry Marketing and sales

Causal analytics: ask a business question, get a deterministic causal answer and charts.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http syl-pulse 'https://pulse.sylai.io/mcp' --header 'X-API-Key: <Your Syl API key (the same key as Syl Guardian; get a trial key at https://sylai.io/guardian).>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "syl-pulse": {
            "type": "http",
            "url": "https://pulse.sylai.io/mcp",
            "headers": {
                "X-API-Key": "<Your Syl API key (the same key as Syl Guardian; get a trial key at https://sylai.io/guardian).>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Syl Pulse MCP
  2. Connect
  3. Tool: pulse_analyze
  4. Support
  5. License

Syl Pulse MCP

Syl Pulse is causal analytics for business questions. Give your agent a dataset and a question like "Does ad spend drive sales?" and get back the full Pulse report: the adjusted causal effect with its confidence interval, a by-channel breakdown, caveats and assumptions, and charts (causal graph, effect, trend). When the question asks about sample size or test duration, it also returns a spend-cut test design.

All numbers are deterministic statistics. They are never generated by an LLM; only the report prose is AI-written, and its figures are checked against the computed numbers.

This repository holds the public listing metadata and connection instructions for the hosted Pulse MCP server. Pulse itself is a hosted service.

Connect

Claude Code:

claude mcp add --transport http syl-pulse https://pulse.sylai.io/mcp \
  --header "X-API-Key: <your key>"

Claude Desktop (via mcp-remote):

{
  "mcpServers": {
    "syl-pulse": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://pulse.sylai.io/mcp",
               "--header", "X-API-Key:${SYL_API_KEY}"],
      "env": { "SYL_API_KEY": "<your key>" }
    }
  }
}

Then ask your agent: "Use pulse_analyze on this data: does ad_spend drive new_customers, adjusting for seasonality? How long would a spend-cut test need to run?"

Every request needs the key, including tool listing. Each successful analysis counts against your Pulse quota or trial.

Tool: pulse_analyze

Estimates a causal effect from a dataset and answers a business question.

ArgumentDescription
questionRequired. The business question, e.g. "Does ad spend drive sales?".
csv or dataDataset as CSV text or a list of row objects (exactly one).
cause, effectOptional. Treatment and outcome columns; inferred from the question if omitted.
confoundersOptional. Columns to adjust for, in addition to those discovered.
outcomesOptional. Several outcome columns, for by-channel effects.
time_colOptional. Time column, used for the test-design cadence.
include_guardian_verdictAlso return a pass / caution / hold verdict, computed locally (uses no Guardian quota).
include_chartsAttach chart images (default true).
include_test_designForce the spend-cut test design on or off; by default it appears only when the question asks about sample size, power or test duration.

The result's first content block is the report text, followed by chart images. The structured result has the effect size with its confidence interval, per-channel effects, confidence, caveats, and the optional verdict and test design.

For a quick pass/caution/hold check on a single claim, see the sibling server Syl Guardian MCP.

Support

Questions or issues: https://sylai.io or connor@sylai.io.

License

The files in this repository (metadata and documentation) are MIT licensed; see LICENSE. The Syl Pulse service is proprietary.

Frequently asked questions

What is Syl Pulse?

Causal analytics: ask a business question, get a deterministic causal answer and charts.

How do I install Syl Pulse?

It runs as a remote server. In Claude Code: claude mcp add --transport http syl-pulse 'https://pulse.sylai.io/mcp' --header 'X-API-Key: <Your Syl API key (the same key as Syl Guardian; get a trial key at https://sylai.io/guardian).>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Syl Pulse need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Is Syl Pulse open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Syl Pulse?

It is published by connor274. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.