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/aacaa53f-7f9f-4c10-978e-8f270e669406/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: "es.contix/herramientas"
title: "contix herramientas"
description: "Free no-auth tools for Spain: validate IBAN, EU VAT check (VIES), Modelo 303 sums, Veri*factu dates."
version: "1.0.0"
homepage_url: "https://contix.es/herramientas/"
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "es.contix"
display_name: "es.contix"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository: null
packages[0]
transports[1]
0{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://api.contix.es/api/v1/mcp/herramientas"
endpoint_host: "api.contix.es"
auth_type: "none"
auth{3}
type: "none"
authorization_servers[0]
scopes[0]
protocol{4}
era: "legacy"
negotiated_version: "2025-11-25"
supported_versions[0]
transport_type: "streamable-http"
tools[6]
0{9}
name: "calculate_modelo_303"
title: "Sum the Spanish VAT return (Modelo 303)"
effect: "WRITE"
effect_confidence: 0.533
capabilities[0]
risk_severity: "LOW"
fingerprint: "0c974df5e5b0a18e122d16ec3d1004a9be4e145e61d75d100bfca3a386fd3a77"
input_schema_fingerprint: "9b71ca6bb96efdd8a0ae38bbda3e5c36dc615084d9125388c001971770a8bc59"
annotations{5}
title: "Sum the Spanish VAT return (Modelo 303)"
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
1{9}
name: "calculate_vat"
title: "Calculate VAT (IVA) and IRPF withholding"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "1af2108a2b85ee8bde9944ace309ed49029d63caf8e9e93356e8388d5b58392c"
input_schema_fingerprint: "06c2ba3a19879303466acce00a2fc3b33bd5bff753988ef15e96ff9cb4ef8cfb"
annotations{5}
title: "Calculate VAT (IVA) and IRPF withholding"
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
2{9}
name: "check_vat_number"
title: "Check an EU VAT number (VIES)"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "f788ccc2d8f9e0c60040b0f2355f4e596a15b0961cf7b02f3e36c008ec84343b"
input_schema_fingerprint: "3e05640d41f57092e78039f3d72f71dc4c254f09cdac1c6b05ec29bf922c4aa1"
annotations{5}
title: "Check an EU VAT number (VIES)"
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: true
3{9}
name: "get_obligation_dates"
title: "Veri*factu and e-invoicing deadlines (Spain)"
effect: "READ"
effect_confidence: 0.762
capabilities[0]
risk_severity: "INFO"
fingerprint: "7362050b5f56bbb8fc4ec1286bf91318801a609d5e33da25555fca1708838753"
input_schema_fingerprint: "7b92a12c6cd4c2d48a38413fe88ded74a53811e5edefaf3746e89a98f0de5c6e"
annotations{5}
title: "Veri*factu and e-invoicing deadlines (Spain)"
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
4{9}
name: "validate_iban"
title: "Validate an IBAN"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "bebeda8b53e1f4fdaa66f2b4c3a3145c65ab791871870b79873d5a127c643d42"
input_schema_fingerprint: "fdf3698cfee9231ca31700a62a9ff034caacdb637d11767f4664dcde6996e04d"
annotations{5}
title: "Validate an IBAN"
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
5{9}
name: "validate_spanish_tax_id"
title: "Calculate/validate a Spanish DNI, NIE or CIF check character"
effect: "READ"
effect_confidence: 0.878
capabilities[1]
0{2}
capability: "SENSITIVE_PERSONAL_DATA"
confidence: 0.5
risk_severity: "MEDIUM"
fingerprint: "69dace8943828a554a84e0057f4b1b47eb4b709107b11032f76d431d1d870e4e"
input_schema_fingerprint: "4516cba75e6982dbe5e8539ee8e3f65329cbb84ebd1b88afbf79b93693f03c94"
annotations{5}
title: "Calculate/validate a Spanish DNI, NIE or CIF check character"
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
resources[0]
prompts[0]
extensions[0]
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: "api.contix.es"
registrable_domain: "contix.es"
source: "transport"
findings[4]
0{6}
check_id: "SQ-CONFORMANCE-MODERN-FAILURE"
category: "conformance"
severity: "LOW"
title: "Protocol conformance checks failed"
subject_type: "server"
subject_name: null
1{6}
check_id: "SQ-REPO-MISSING"
category: "provenance"
severity: "LOW"
title: "No source repository linked"
subject_type: "server"
subject_name: null
2{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
3{6}
check_id: "SQ-TOOL-ANNOTATION-UNDERCLAIM"
category: "annotations"
severity: "LOW"
title: "Annotations understate what the tool does"
subject_type: "tool"
subject_name: "calculate_modelo_303"
trust{9}
registry_namespace: "verified_upstream"
publisher_identity: "unverified"
organization: "unverified"
domain: "unverified"
repository: "not_provided"
source_provenance: "unknown"
security_scan: "no_critical_findings"
privacy_transparency: "not_provided"
monitoring: "active"
provenance{4}
registry_name: "es.contix/herramientas"
registry_content_sha256: "1c39d75f9fd2ff7dcd29bc05941a9a17f69082e338bd2e0ebe618be4fcb3d1b9"
scan_snapshot_fingerprint: "24d7c1a35ae80be0dceb920b34a7eb8c24861b2dc2a78f28b8458bdba6781bc3"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T05:52:09.460Z"
observed_at: "2026-11-05T12:40:03.842+00:00"
registry_published_at: "2026-10-01T12:11:46.033082+00:00"
registry_updated_at: null