io.github.cyanheads/calculator-mcp-server
io.github.cyanheads/calculator-mcp-server
MCP Bill of Materials
A machine-readable inventory of what this server exposes and depends on: tools with their effects, transports, packages, findings and provenance (schema version 1.0). Third-party text in it is escaped. Also available from the REST API at /api/v1/servers/f20954cb-2882-4c3b-abe2-78f5fe332d17/mcbom.
MCP Bill of Materials
root{21}
schema_version: "1.0"
bom_format: "squatch-mcbom"
generator{3}
name: "squatch-mcp"
classifier_version: "rules_v1@2026-10-11.1"
unicode_version: "18.0.0"
server{7}
name: "io.github.cyanheads/calculator-mcp-server"
title: null
description: "Evaluate, simplify, and differentiate mathematical expressions."
version: "0.6.0"
homepage_url: null
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "io.github.cyanheads"
display_name: "io.github.cyanheads"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository{5}
url: "https://github.com/cyanheads/calculator-mcp-server"
provider: "github"
owner: "cyanheads"
name: "calculator-mcp-server"
verified: false
packages[2]
0{4}
registry_type: "npm"
identifier: "@cyanheads/calculator-mcp-server"
version: "0.6.0"
transport: "stdio"
1{4}
registry_type: "npm"
identifier: "@cyanheads/calculator-mcp-server"
version: "0.6.0"
transport: "streamable-http"
transports[3]
0{5}
kind: "package"
type: "stdio"
endpoint_url: null
endpoint_host: null
auth_type: "unknown"
1{5}
kind: "package"
type: "streamable-http"
endpoint_url: null
endpoint_host: null
auth_type: "unknown"
2{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://calculator.caseyjhand.com/mcp"
endpoint_host: "calculator.caseyjhand.com"
auth_type: "none"
auth{3}
type: "none"
authorization_servers[0]
scopes[0]
protocol{4}
era: "modern"
negotiated_version: "2026-07-28"
supported_versions[0]
transport_type: "streamable-http"
tools[1]
0{9}
name: "calculate"
title: "Calculate"
effect: "EXECUTE"
effect_confidence: 0.78
capabilities[0]
risk_severity: "CRITICAL"
fingerprint: "e9d19736c395a0d3b0e719b479d18b2d5007fdc62c79bd70f13d796f2d0c7c75"
input_schema_fingerprint: "35c4dc68310de30ae1ddef15956389f440c3f6e117f086c967380655bc0493d5"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: false
resources[3]
0{4}
key: "calculator://help"
kind: "resource"
mime_type: "text/markdown"
fingerprint: "ca115df064ee7062a0ae4bef3d3ab9741be821658dd64d1f7be1744de09e3369"
1{4}
key: "skill://calculator-guide/SKILL.md"
kind: "resource"
mime_type: "text/markdown"
fingerprint: "66228119ba8aa7adcbb6d08afec01dc2047d8ef78e3dd4e117f6e61915730a08"
2{4}
key: "skill://{+path}"
kind: "template"
mime_type: null
fingerprint: "9777dc7f1cf468158c157032a0ccebf9b50270f4e8753af9ccaf2fe99890ccf0"
prompts[0]
extensions[1]
0: "io.modelcontextprotocol/skills"
data{6}
privacy_completeness: "not_provided"
data_categories[0]
ai_training: null
retention_policy: null
processing_regions[0]
subprocessors[0]
external_integrations[1]
0{3}
host: "calculator.caseyjhand.com"
registrable_domain: "caseyjhand.com"
source: "transport"
findings[4]
0{6}
check_id: "SQ-SERVER-AUTH-NONE-WRITE"
category: "authentication"
severity: "MEDIUM"
title: "State-changing tools available without authentication"
subject_type: "server"
subject_name: null
1{6}
check_id: "SQ-TOOL-ANNOTATION-UNDERCLAIM"
category: "annotations"
severity: "HIGH"
title: "Annotations understate what the tool does"
subject_type: "tool"
subject_name: "calculate"
2{6}
check_id: "SQ-TOOL-LENGTH-ANOMALY"
category: "tool_design"
severity: "LOW"
title: "Unusually long model-facing text"
subject_type: "tool"
subject_name: "calculate"
3{6}
check_id: "SQ-TOOL-TITLE-EFFECT-MISMATCH"
category: "deceptive_metadata"
severity: "HIGH"
title: "Display title describes a lower-impact action than the name"
subject_type: "tool"
subject_name: "calculate"
trust{9}
registry_namespace: "verified_upstream"
publisher_identity: "unverified"
organization: "unverified"
domain: "unverified"
repository: "unverified"
source_provenance: "partial"
security_scan: "findings_detected"
privacy_transparency: "not_provided"
monitoring: "active"
provenance{4}
registry_name: "io.github.cyanheads/calculator-mcp-server"
registry_content_sha256: "1166cc7a0cfab4b572d8e466759bb4183845374f202a8082e8f7da997a3cba54"
scan_snapshot_fingerprint: "8109f330d8898770f4ba2e7eb31eb68720f10eef6fc9bddbeff7ee2153e8ba48"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T02:14:31.905Z"
observed_at: "2026-11-12T16:44:44.79+00:00"
registry_published_at: "2026-11-12T15:29:41.809302+00:00"
registry_updated_at: null