SpreadBench NCSX — AI Infrastructure Bond Credit Spread Index
com.spreadbench/ncsxspreadbench.comstreamable-httpv0.1.0Scanned
AI-infrastructure (Neocloud) bond credit spread index: Composite/HY/IG levels, series, attribution.
7 tools: 7 only read.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
Run the operations that matter as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
7 tools
Only reads 7Show 7 read-only tools
ncsx_attributionGet this week's index change attribution (which bonds moved the index, in bp).No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get this week's index change attribution (which bonds moved the index, in bp).
ncsx_bondGet the profile and 30-day spread path of one constituent bond by CUSIP (e.g.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get the profile and 30-day spread path of one constituent bond by CUSIP (e.g. US21873SAC26).
ncsx_constituentsList all constituent bonds (issuer, coupon, maturity, rating, tier, spread) with identifier verification status.No findings
Why it is in this group
- The description's first verb is "list": a word for reading.
Description, as the server wrote it List all constituent bonds (issuer, coupon, maturity, rating, tier, spread) with identifier verification status.
ncsx_latestGet the latest NCSX index levels (Composite / HY / IG) with daily & weekly changes, 90-day percentiles, as-of date, methodology version, DOI and data_status.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get the latest NCSX index levels (Composite / HY / IG) with daily & weekly changes, 90-day percentiles, as-of date, methodology version, DOI and data_status. Read data_status before quoting: "seed" means demo series, "verified" means observed market data.
ncsx_levelsGet the 90-trading-day daily level series for one NCSX index tier (composite | hy | ig).No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get the 90-trading-day daily level series for one NCSX index tier (composite | hy | ig).
ncsx_methodologyGet methodology metadata: version, DOI, license, formulas, data source licensing status.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get methodology metadata: version, DOI, license, formulas, data source licensing status.
ncsx_weeklyGet the latest weekly report snapshot (levels, weekly changes, attribution, citation string).No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it Get the latest weekly report snapshot (levels, weekly changes, attribution, citation string).
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 0.1.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http ncsx https://spreadbench.com/mcpclaude mcp add --transport http ncsx https://spreadbench.com/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__ncsx__ncsx_latest",
"mcp__ncsx__ncsx_levels",
"mcp__ncsx__ncsx_bond",
"mcp__ncsx__ncsx_constituents",
"mcp__ncsx__ncsx_attribution",
"mcp__ncsx__ncsx_methodology",
"mcp__ncsx__ncsx_weekly"
],
"ask": [],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as ncsx. Review it before you use it.
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/com.spreadbench/ncsx/verify?hash=d74c05f4eca4120f8b1d176aca7cf5fdd9787c4dfaed44ec5c57cef8993a6a93" | jq -e '.changed == false'Pinned hash d74c05f4eca4, from Nov 3, 2026, 21:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.spreadbench/ncsx/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.spreadbench/ncsx)Source: MCP Registry. Synced Nov 3, 2026, 22:17 UTC.