Fast MCP
by yjacquinA Ruby Implementation of the Model Context Protocol
Fast MCP is an open-source mcp server by yjacquin, written mainly in Ruby, with 1,191 GitHub stars and the MIT license. Its code was last updated Dec 15, 2025.
Scan summary: scanned Nov 5, 2026 at commit 7ec08b9. No capabilities flagged by our checks. Scan policy
ScannedScanned. The automated checks below ran on the commit shown. Read each line for what was and was not covered.
Full scan at
7ec08b9 · Nov 5, 2026 ScannedStatic, secrets and dependency checks completed with no critical findings.
Passed. This check ran and found nothing it flags.Static code scanpassPassed. This check ran and found nothing it flags.
Passed. This check ran and found nothing it flags.Secrets scanpassPassed. This check ran and found nothing it flags.
Flagged. This check found an issue. See the findings below.Dependency audit111 known vulnerabilitiesfailFlagged. This check found an issue. See the findings below.
Warning. This check found something worth reading in the findings below. It is not proof of a problem.ManifestnonewarnWarning. This check found something worth reading in the findings below. It is not proof of a problem.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Buildn/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Boot & handshaken/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Network egressn/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Reproducible (×3)n/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Findings (27)
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.addressable@2.8.7: 2 known vulnerabilitiesGHSA-h27x-rffw-24p4, GHSA-h27x-rffw-24p4
Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.concurrent-ruby@1.3.5: 6 known vulnerabilitiesGHSA-6wx8-w4f5-wwcr, GHSA-h8w8-99g7-qmvj, GHSA-wv3x-4vxv-whpp, GHSA-6wx8-w4f5-wwcr, GHSA-h8w8-99g7-qmvj +1 more
Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.puma@6.6.0: 4 known vulnerabilitiesGHSA-2vqw-3mp8-cgmx, GHSA-qpgp-93vx-g8v8, GHSA-2vqw-3mp8-cgmx, GHSA-qpgp-93vx-g8v8
Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.rack@3.1.16: 19 known vulnerabilitiesGHSA-6xw4-3v39-52mm, GHSA-7mqq-6cf9-v2qp, GHSA-8vqr-qjwx-82mw, GHSA-g2pf-xv49-m2h5, GHSA-h2jq-g4cq-5ppq +14 more
Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.crass@1.0.6: 5 known vulnerabilitiesGHSA-6jxj-px6v-747w, GHSA-6wmf-3r64-vcwv, GHSA-8vfg-2r28-hvhj, GHSA-pq4g-8rxf-4g29, GHSA-wwpr-jff3-395c
examples/rails-demo-app/Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.net-imap@0.5.6: 9 known vulnerabilitiesGHSA-46q3-7gv7-qmgg, GHSA-75xq-5h9v-w6px, GHSA-87pf-fpwv-p7m7, GHSA-8p34-64r3-mwg8, GHSA-c4fp-cxrr-mj66 +4 more
examples/rails-demo-app/Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.nokogiri@1.18.6: 13 known vulnerabilitiesGHSA-353f-x4gh-cqq8, GHSA-5prr-v3j2-97mh, GHSA-5v8h-3h3q-446p, GHSA-5w6v-399v-w3cc, GHSA-8678-w3jw-xfc2 +8 more
examples/rails-demo-app/Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.rack@3.1.12: 21 known vulnerabilitiesGHSA-47m2-26rw-j2jw, GHSA-6xw4-3v39-52mm, GHSA-7mqq-6cf9-v2qp, GHSA-8vqr-qjwx-82mw, GHSA-g2pf-xv49-m2h5 +16 more
examples/rails-demo-app/Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.rubyzip@2.4.1: 1 known vulnerabilityGHSA-47m2-wp7j-p9vc
examples/rails-demo-app/Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.uri@1.0.3: 1 known vulnerabilityGHSA-j4pr-3wm6-xx2r
examples/rails-demo-app/Gemfile.lock - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.websocket-driver@0.7.7: 4 known vulnerabilitiesGHSA-2x63-gw47-w4mm, GHSA-33ph-fccm-39pj, GHSA-8j3g-f24p-4mpw, GHSA-ghhp-3qvg-889p
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.json@2.12.2: 1 known vulnerabilityGHSA-x2f5-4prf-w687
Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.sinatra@4.1.1: 1 known vulnerabilityGHSA-mr3q-g2mv-mr4q
Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.actionview@8.0.2: 1 known vulnerabilityGHSA-v55j-83pf-r9cq
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.activerecord@8.0.2: 1 known vulnerabilityGHSA-76r7-hhxj-r776
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.activesupport@8.0.2: 3 known vulnerabilitiesGHSA-2j26-frm8-cmj9, GHSA-89vf-4333-qx8v, GHSA-cg4j-q9v8-6v38
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.json@2.10.2: 1 known vulnerabilityGHSA-x2f5-4prf-w687
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.loofah@2.24.0: 1 known vulnerabilityGHSA-9wjq-cp2p-hrgf
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.mail@2.8.1: 1 known vulnerabilityGHSA-mvxr-6m87-mv2q
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.msgpack@1.8.0: 1 known vulnerabilityGHSA-4mrv-5p47-p938
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.rails-html-sanitizer@1.6.2: 1 known vulnerabilityGHSA-cj75-f6xr-r4g7
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.rexml@3.4.1: 1 known vulnerabilityGHSA-c2f4-jgmc-q2r5
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.sqlite3@2.6.0: 3 known vulnerabilitiesGHSA-28hh-pr2h-2w89, GHSA-j7fr-3v8c-3qc3, GHSA-mwm8-39rw-8826
examples/rails-demo-app/Gemfile.lock - lowLow. Minor, or common in normal tools. Shown for information.No manifest declaring network access and environment variables (agent.json)
Automated result for the commit shown. See our scan policy. View the scan log
Maintainers can claim the listing to rescan, or dispute a result.
Fast MCP alternatives
View more →Similar mcp servers in Other, ranked by GitHub stars. Compare licence, recent activity and scan status before you choose.
| Name | Stars | Licence | Last updated | Scan |
|---|---|---|---|---|
| Fast MCP (this page) yjacquin | 1.2k | MIT | Dec 15, 2025 | Scanned, no flagged issues |
| Github MCP Server github | 34k | MIT | Oct 30, 2026 | Scanned, no flagged issues |
| Fastapi MCP tadata-org | 12k | MIT | Nov 24, 2025 | Scanned, no flagged issues |
| GhidraMCP LaurieWired | 12k | Apache-2.0 | Oct 10, 2026 | Scanned, no flagged issues |
| MCP Go mark3labs | 9.2k | MIT | Oct 30, 2026 | Scanned, no flagged issues |
| Git MCP idosal | 8.5k | Apache-2.0 | May 8, 2026 | Scanned, no flagged issues |