MCP.Market

Syl Pulse MCP server

online · 100% uptime
by sylai.io·io.sylai/pulse·v0.1.0
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Causal analytics: ask a business question, get a deterministic causal answer and charts.

A88/100grade A
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Safety scan
A88/100

full report

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Syl Pulse tools (1)

write = sends, deletes, buys or posts
  • pulse_analyzeFree

    Estimate a causal effect from a dataset and answer a business question. Provide exactly one of ``csv`` (CSV text) or ``data`` (list of row objects). Returns the full long-form Pulse report (the same answer an email reply contains) as the primary text content and as ``report`` in the structured result, followed by chart PNGs as image content blocks (unless ``include_charts`` is false). Structured fields: the adjusted effect size (``ate``/``effect_size``) with its confidence interval (``ci_low``, ``ci_high``, ``ci_range``), per-channel effects (``channels``, keyed by outcome), confidence, and caveats. A ``test_design`` (how long a spend-cut test would take to confirm the effect, and whether the data already suffices) is included only when the question asks about sample size, power, or how long a test would take, or when ``include_test_design`` is true; otherwise it is null. With ``include_guardian_verdict`` it also returns ``guardian_verdict`` ``{verdict: pass|caution|hold, reason}``, computed locally. All numbers are deterministic statistics, never LLM-generated. Args: question: The business question, e.g. "Does ad spend drive sales?". csv: Dataset as CSV text. data: Dataset as a list of row records (alternative to ``csv``). cause: Treatment column (inferred from the question if omitted). effect: Outcome column (inferred if omitted). confounders: Columns to adjust for, in addition to those discovered. outcomes: Several outcome columns, for by-channel effects. time_col: Time column (used for the test-design cadence). include_guardian_verdict: Also return a pass/caution/hold verdict. include_charts: Attach chart images (DAG, effect, trend) as image content. include_test_design: Force the spend-cut test design / sample-size section on (true) or off (false). Omit (null) to include it only when the question asks about sample size, statistical power, or how long a test would take.

Public scan report

scanner v0.1.10 · 2026-10-25 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 753ms20/20
  • Tool poisoning1 tool descriptions checked15/15
  • Auth qualityAPI key sent as a header8/15
  • Maintenancelast push 2 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10
Overall 88/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Syl Pulse compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
88/100
higher than 75% of 48,255 servers
Tools
1
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
155 ms
faster than 72% of 30,031 servers

What its tools let an agent do: 1 read

Install Syl Pulse in Claude Code, Cursor or VS Code

claude mcp add --transport http pulse https://pulse.sylai.io/mcp
Add to Cursor

What the publisher says

From the Syl Pulse repository's README, as published. We do not edit it. Read it on GitHub

Syl Pulse MCP

<!-- mcp-name: io.sylai/pulse -->

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.

trial key at .

  • Endpoint: https://pulse.sylai.io/mcp (stateless streamable HTTP)
  • Auth: X-API-Key header on every request. It is the same key as Syl Guardian; get a
  • Product page:
  • Docs: (MCP connector section)

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 pulseanalyze on this data: does adspend drive newcustomers, 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.

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: or connor@sylai.io.

License

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

Nothing above is checked by us. What we check is on the safety report.

Syl Pulse: common questions

Is Syl Pulse MCP server safe?
Yes, by our scan: it is graded A (88/100). Read the Syl Pulse safety report
How do I install Syl Pulse?
It runs remotely at pulse.sylai.io. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Syl Pulse need an API key?
Yes. The registry entry asks for X-API-Key.
Is Syl Pulse maintained?
The last commit was 13 days ago (2026-10-22). The latest release is v0.1.0.
Is Syl Pulse up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Syl Pulse?
Servers from other publishers that do the same job: Ask Jev MCP server.
How does Syl Pulse compare with other MCP servers?
safety score 88/100 (higher than 75% of 48,255 servers); tools 1 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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