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harness/mcp-server

harness/mcp-server vmain@5fe5a6e

Security Trust Score
Grade B · Moderate posture
Tier 1 · Public sourceHigh confidence · 98%
Declared MCP capabilities
Resources

Host harness/mcp-server in a governed environment — SSO in front, every tool call attributed and audited.

Reputation91stars75forks24open issuestodaylast commit1yage

Security controls

Deterministic, evidence-backed. Score earned from passing controls; a failed guard caps it.

Model–MCP Runtime Guardrails

  • Pass
    Indirect Prompt Injection (IPI) Defensesguardno injection markers

    Tool/prompt/resource text is free of hidden instructions that could hijack the agent.

  • Pass
    Strict JSON Schema EnforcementadditionalProperties:false present

    Tool inputs are constrained (additionalProperties:false), so unexpected arguments can't be smuggled in.

  • Pass
    User-in-the-Loop / Approval Scopeguardno destructive tool scope

    No over-broad or destructive tools (arbitrary shell, bulk-delete) that warrant human approval.

  • N/A
    Tool Definition Integrityguardno prior version to diff

    Every consecutive version pair is diffed for new injection markers or destructive scope — a risky diff anywhere in history is a rug-pull (fail, durable); benign description drift warns.

Application Security Checks

  • Warn
    No path traversalguard17 occurrences

    Naive path checks let tools read/write outside intended directories (EscapeRoute-class).

    scripts/adm-zip-security-lib.mjs:86scripts/adm-zip-security-lib.mjs:86scripts/benchmark-search-routing.mjs:37scripts/benchmark-search-routing.mjs:43

    Fix: Resolve to a canonical path and verify containment; reject ../ and symlinks.

  • Warn
    No SSRF sinksguard9 occurrences

    Fetching tool-supplied URLs can pivot into internal networks and metadata services.

    scripts/check-schema-coverage.js:22scripts/entity-schema-sync-lib.mjs:191scripts/sync-schemas.js:38src/audit/sinks/webhook.ts:72

    Fix: Allow-list destinations; reject arbitrary/loopback/link-local URLs.

  • Warn
    No known-vulnerable dependencies2 of 315 runtime deps vulnerable; worst high

    Runtime dependencies (parsed from the lockfile) are scanned against OSV.dev for published CVEs. Advisory: flagged dependencies lower the score but don't hard-cap it, since transitive reachability is unproven.

    [email protected] — GHSA-xcpc-8h2w-3j85[email protected] — GHSA-2v37-7h3g-55p8

    Fix: Upgrade the flagged dependencies past their fixed versions.

  • Warn
    Has a security policyno security policy

    A SECURITY.md gives a private path to report vulnerabilities.

    Fix: Add SECURITY.md with a disclosure contact and process.

  • Pass
    No command-injection sinksguardno sinks found

    Untrusted tool input reaching a shell yields remote code execution.

  • Pass
    No dynamic code executionguardno sinks found

    eval()/exec()/Function() on tool-derived strings allows arbitrary code execution.

  • Pass
    No unsafe deserializationguardno sinks found

    pickle/yaml.load/etc. on untrusted data can execute code.

  • Pass
    No committed secretsguardno secrets found

    Hardcoded keys/tokens in published source are live credentials an attacker can use.

  • Pass
    Credentials sourced from environmentreads credentials from environment

    Reading secrets from env/secret stores avoids hardcoding them.

  • Pass
    Dependencies pinned (lockfile)lockfile present

    A lockfile makes installs reproducible and resistant to silent dependency swaps.

  • Pass
    Actively maintainedrecent commits

    Unmaintained servers don't receive security fixes.

  • Pass
    Repository not archivedguardactive

    Archived repositories will never be patched.

  • Pass
    Declares a licenseMIT

    A clear license is required for legal enterprise use.

  • Pass
    Adoption & popularityestablished adoption

    A small, capped nudge from stars/downloads — widely-used servers get more eyes on bugs. It can never offset a real security failure.

  • Not checked
    Signed releasesnot evaluated

    Signed releases let consumers verify artifacts weren't tampered with.

  • N/A
    No install/post-install scriptsguardno published package

    install hooks run arbitrary code on every consumer at install time.

  • N/A
    Package name not typosquattingguardno published package

    Names mimicking popular packages are a common malware delivery vector.

  • N/A
    Published with provenanceno published package

    Build provenance attests the artifact was built from the claimed source by CI.

  • N/A
    Established maintainerno published package

    Brand-new / single anonymous maintainers raise takeover and malware risk.

Transport & Trust Model

  • Pass
    Execution Sandboxingcontainerized

    A container/sandbox image limits blast radius; a server that runs natively has full host access.

  • Pass
    Network Exposureno bind-all detected

    Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.

  • N/A
    Transport Encryption (TLS)guardno remote endpoints

    Plaintext HTTP exposes traffic and bearer tokens to interception.

  • N/A
    IAM / Authentication Scopingno remote endpoints

    OAuth 2.1 / Protected Resource Metadata gates who can invoke tools.

  • N/A
    Live Endpoint Reachablenot dynamically scanned

    A dynamic scan connected to the declared remote endpoint and it responded — verified live, not a dead URL.

  • N/A
    Authentication Enforced (live)not dynamically scanned

    If the server declares auth is required, it must actually reject anonymous clients. Serving tools to unauthenticated callers is a real exposure.

Tools (80)

iduidlogonamespectagstypewikiemailinputitemsusersagentsemailscontextcommentsdisabledmetadataroleNamemy-domainmy-moduleprincipalTest Groupdeploy-k8sgit_sourceidentifierminimal-ciminimal-v1sort_orderDisabled PSUpdated OrgdescriptionmanagedRolepermissionssearch_termuser_groupsFull ProjectFull Test RGFull Test SAdocker-buildstorage_typerole_bindingsFull Test Roleaccess_controlagent-pipelineexpected_toolsgitops-sync-v1helm-deploy-v1includedScopespr-teardown-v1principal_typeresourceFilterroleIdentifierroleScopeLevelUpdated Projectexpected_outputrole_identifiertanzu-deploy-v1azure-web-app-v1Full Organizationecs-blue-green-v1github-pat-secretk8s-blue-green-v1resourceGroupNameci-docker-build-v1precomputed_outputexpected_tool_calls<Agent Display Name>allowed_scope_levelscustom-deployment-v1k8s-canary-deploy-v1serverless-lambda-v1ecs-fargate-deploy-v1k8s-rolling-deploy-v1terraform-approval-v1<Updated Display Name>multi-region-hotfix-v1resourceGroupIdentifierparallel-environments-v1resource_group_identifier
harness/mcp-server vmain@5fe5a6e — 88/100 · Canopii Trust Index