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dev.openfeature/mcp

NPM · @OPENFEATURE/MCP · SCANNED AUG 3

MCP server providing OpenFeature SDK installation guides and OFREP flag evaluation

Available components

+27 this week 65 Trust /100
Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security86
  • No malware found by supply-chain analysis.Pass
  • Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree.Partial
  • No install/post-install scripts declared.Pass
  • Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree. View diagnostics → Partial
Provenance & Transparency58
Schema Quality & AI Usability49
  • AI-judged instruction clarity (fair).Partial
  • Tool/resource definitions use about 195 tokens (~97/item across 2 items; 2 tools + 0 resources), lean.Pass
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
  • Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage86
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 57% of tool parameters carry a description.Partial
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · @openfeature/mcp

# add to Claude Code
claude mcp add dev-openfeature-mcp -- npx -y @openfeature/mcp
# add to Codex CLI
codex mcp add dev-openfeature-mcp -- npx -y @openfeature/mcp
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-openfeature-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@openfeature/mcp"
      ],
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add dev-openfeature-mcp --command npx --arg -y --arg @openfeature/mcp
# ~/.hermes/config.yaml
mcp_servers:
  dev-openfeature-mcp:
    command: "npx"
    args: ["-y", "@openfeature/mcp"]
// mcp.json
{
  "mcpServers": {
    "dev-openfeature-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@openfeature/mcp"
      ]
    }
  }
}
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 3 Aug 26 +50
    • Install scripts: unverified → pass security
    • Known CVEs: unverified → partial security
    • Provenance: unverified → pass security
    • The attested source repository moved: open-feature/mcp security
    • License: unverified → fail functional
    • Security disclosure: unverified → fail functional
    • MCP protocol: unverified → pass functional
    • Stability: unverified → 0.27 functional
    • Maintenance: unverified → pass functional
    • Dependency health: unverified → partial functional
    • Tool coverage: unverified → 100 functional
  • 2 Aug 26 −39
    • Provenance: pass → unverified security
    • Install scripts: pass → unverified security
    • Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet. security
    • The attested source repository moved: open-feature/mcp security
    • Tool coverage: 100 → unverified functional
    • Security disclosure: fail → unverified functional
    • Capabilities: pass → unverified functional
    • License: fail → unverified functional
    • Maintenance: pass → unverified functional
    • First check of Schema quality: unverified functional
  • 1 Aug 26 −10
    • Known CVEs: partial → unverified security
    • Dependency health: partial → unverified functional
  • 31 Jul 26 +20
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 −30
    • Malware scan: pass → unverified security
    • Known CVEs: partial → unverified security
    • Dependency health: partial → unverified functional
  • 29 Jul 26 +36
    • Known CVEs: unverified → partial security
    • Provenance: unverified → pass security
    • Install scripts: unverified → pass security
    • The attested source repository moved: open-feature/mcp security
    • Security disclosure: unverified → fail functional
    • License: unverified → fail functional
    • Schema quality: unverified → fair functional
    • Maintenance: unverified → pass functional
    • Dependency health: unverified → partial functional
  • 27 Jul 26 38

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/@openfeature/[email protected]

Provenance verified

Ecosystem: npm · Outcome: verified

Reason: verified

Source repo:
open-feature/mcp
Certificate issuer:
https://token.actions.githubusercontent.com
Certificate SAN:
https://github.com/open-feature/mcp/.github/workflows/release-please.yml@refs/heads/main
Rekor log index:
1520452646
Predicate type:
https://slsa.dev/provenance/v1
Subject digest:
sha512:0c8561a798a573ace1552964d433fa4f0aecb859e992d1c1a28c5791691d4a740b5c4919de1932c6831970622ad7dee987ab633441721bbd5584216e4
Discovery method:
attestation_endpoint
Dependencies 94 packages

94 packages in the resolved dependency tree · 94 deprecated · 29 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 2 exposed · ~195 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens
install_openfeature_sdk ~81

Fetch OpenFeature SDK installation instructions, and follow the instructions to install the OpenFeature SDK. If you are installing a provider, also fetches the provider installation instructions. Also includes documentation and examples for using OpenFeature SDK in your application. Choose the technology that matches the application's language/framework.

NameTypeReqDescription
providersarray
technologystringyes

No output schema declared.

No examples provided.

ofrep_flag_eval ~114

Evaluate feature flags using OpenFeature Remote Evaluation Protocol (OFREP). If flag_key is omitted, performs bulk evaluation.

NameTypeReqDescription
authobject
base_urlstringBase URL of your OFREP-compatible flag service. Must be set directly or via environment variables or config file.
contextobjectContext information for flag evaluation
etagstringETag for bulk evaluation
flag_keystringIf provided, calls single flag evaluation, otherwise performs bulk evaluation.

No output schema declared.

No examples provided.