Fallow MCP Server
by fallow-rsCodebase intelligence for TypeScript and JavaScript. Health, complexity hotspots, duplication, architecture boundaries, circular dependencies, design-system drift, and unused code, from one graph. CLI, GitHub Action, LSP, MCP, and VS Code. Rust, MIT licensed.
Fallow is an open-source mcp server by fallow-rs, written mainly in Rust, with 5,287 GitHub stars and the MIT license. Its code was last updated Nov 1, 2026.
Scan summary: scanned Nov 5, 2026 at commit 1514a7f. Seen able to run shell commands, read environment and secrets, connect to the internet. 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
1514a7f · Nov 5, 2026 ScannedStatic, secrets and dependency checks completed with no critical findings. BuildsIt installed from a fresh machine.
Warning. This check found something worth reading in the findings below. It is not proof of a problem.Static code scanwarnWarning. This check found something worth reading in the findings below. It is not proof of a problem.
Flagged. This check found an issue. See the findings below.Secrets scanfailFlagged. This check found an issue. See the findings below.
Passed. This check ran and found nothing it flags.Dependency audit1 known vulnerabilitiespassPassed. This check ran and found nothing it flags.
Passed. This check ran and found nothing it flags.Manifestserver.jsonpassPassed. This check ran and found nothing it flags.
Passed. This check ran and found nothing it flags.BuildpassPassed. This check ran and found nothing it flags.
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.
Warning. This check found something worth reading in the findings below. It is not proof of a problem.Network egresswarnWarning. 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.Reproducible (×3)n/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Findings (21)
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.secrets issueDetails are available to the maintainer after claiming this listing.
- mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.Runs shell commands. Fine for some tools, but it means the agent can run anything your user can.
crates/napi/index.js:56 - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.Install contacted hosts other than package registries34.7.16.104.in-addr.arpa
- lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key2 matches in this file
benchmarks/type-aware-semantic-capabilities.json:69 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key170 matches in this file
benchmarks/type-aware-corpus-evidence.json:399 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
tests/fixtures/security-hardcoded-secret-892/src/entropy.ts:1 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
tests/fixtures/security-hardcoded-secret-892/src/object.ts:2 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
tests/fixtures/security-hardcoded-secret-892/tests/provider.test.ts:1 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
tests/fixtures/security-hardcoded-secret-892/src/template.ts:1 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
tests/fixtures/security-hardcoded-secret-892/src/assignment.ts:2 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
tests/fixtures/security-hardcoded-secret-892/src/safe.ts:4 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key2 matches in this file
tools/mutation-runner/test/protocol.test.mjs:188 - lowLow. Minor, or common in normal tools. Shown for information.paste@1.0.15: 1 known vulnerabilityRUSTSEC-2024-0436
tools/similar-code-sidecar/Cargo.lock - lowLow. Minor, or common in normal tools. Shown for information.Reads environment variables not listed in the manifestBASE_SHA, GITHUB_TOKEN, GITHUB_REPOSITORY, PR_BODY, AZURE_CLIENT_ID, AZURE_TENANT_ID, GITHUB_ACTIONS, GITHUB_REF, GITHUB_OUTPUT, ED25519_BINARY_SIGNING_PRIVATE_KEY, ED25519_BINARY_SIGNING_PUBLIC_KEY, ACTION_VERIFY_SCRIPT, FALLOW_VERIFY_RESOLVE_FROM, FALLOW_ACTION_VERIFY_TIMEOUT_MS, CHILD_ENV
- lowLow. Minor, or common in normal tools. Shown for information.Couldn't work out how to start the server. Set "entrypoint" in agent.json.
- infoInfo. A note about the project, not a problem.Ignored the repo's scanner suppression config (3 files)tools/similar-code-sidecar/osv-scanner.toml, editors/vscode/osv-scanner.toml, tests/fixtures/pnpm-lock-merge-conflict-overrides/osv-scanner.toml
Network activity
During install
34.7.16.104.in-addr.arparegistry.npmjs.org
While running
Not run — the code wasn't started in this scan
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.
Fallow alternatives
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| Name | Stars | Licence | Last updated | Scan |
|---|---|---|---|---|
| Fallow (this page) fallow-rs | 5.3k | MIT | Nov 1, 2026 | Scanned, no flagged issues |
| Context Mode mksglu | 33k | None found | Nov 1, 2026 | Not scanned yet |
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| Fastmcp PrefectHQ | 28k | Apache-2.0 | Nov 1, 2026 | Scanned, no flagged issues |
| Nuclear nukeop | 19k | AGPL-3.0 | Nov 1, 2026 | Scanned, no flagged issues |
| MCP For Beginners microsoft | 18k | MIT | Oct 30, 2026 | Scanned, no flagged issues |