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Feldspar, by L3Digital MCP server

Which servers in the official MCP registry are Feldspar, by L3Digital's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-25

← Back to Feldspar, by L3Digital

Whose server it is
  • Registry namecom.project-feldspar/scanverified in the MCP registry

The registry name sits under project-feldspar.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-25
  • Stateanswerschecked 2026-10-25
  • Tools2
  • Server calls itselffeldspar-scan
  • Server version0.4.30
  • Protocol version2025-06-18

On 2026-10-25 the server answered initialize and tools/list without a sign-in. First answer in 194 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.
  • Checked on 2 of the 7 days it takes to judge reliability.

Once connected

  • For "Scan dependencies for known vulnerability advisories", the likely first call is scan_repository.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 2, the first on 2026-10-25
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
  • Answeredmeasuring2 of the 7 daily checks it takes to print a share
  • Median first answer579 ms
  • Space in an agent's context≈ 424 tokensthe definitions of all its tools (2), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results0 of 2 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • not sure · Review a repository for security issues and fix guidance
  • can do · Scan dependencies for known vulnerability advisories
  • not sure · Find correctness bugs and maintainability problems in code

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers2 tools · read 2026-10-25
  • scan_repository

    Clone a public git repository and run feldspar-scan: OSV.dev advisories for pinned dependencies in lockfiles (npm, pnpm, yarn, pip/uv/poetry, Cargo, Go, Gemfile.lock), secret patterns with redacted evidence, and configuration lint…

  • audit_pricing

    Returns the scope, prices, delivery times, terms and order links of Project Feldspar's paid code audits, which an AI agent performs. Use it when the user asks about a paid code audit. No arguments.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "scan": {
      "type": "http",
      "url": "https://project-feldspar.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http project-feldspar https://project-feldspar.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://project-feldspar.com/mcp as a custom connector in the settings.

OpenAPI spec

2 paths, read 2026-10-25. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.