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/5cd1c93c-7d2d-41da-a967-365a052d584d/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: "com.regtail/regtail"
title: "RegTail"
description: "UK used-car checks by plate or photo: free MOT status, no key needed; optional detailed MOT reports"
version: "1.1.0"
homepage_url: "https://regtail.com/docs/agents"
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "com.regtail"
display_name: "com.regtail"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository: null
packages[0]
transports[1]
0{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://regtail.com/mcp"
endpoint_host: "regtail.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[11]
0{9}
name: "compare_vehicles"
title: "Compare two used cars"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "05cb71cf8a4c4ad2fec8678255e260623cebd5edadd68f46c928dfa9ec595979"
input_schema_fingerprint: "25931db2cd46e8a64d459b97a59f07bc699390e4a272eda8d18b16f865840ffc"
annotations{5}
title: "Compare two used cars"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: true
1{9}
name: "credits_balance"
title: "Credits balance"
effect: "READ"
effect_confidence: 0.32
capabilities[0]
risk_severity: "INFO"
fingerprint: "d6f788e33b1f64e6dbebb2ded0e1affdf7a0a1299b3f9006924d6ae2bf1b2557"
input_schema_fingerprint: "26eb9486c3114670bbef1cc76631e07e62898a4ccba2a943c253829686b0e1eb"
annotations{5}
title: "Credits balance"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
2{9}
name: "decode_plate"
title: "Decode a UK plate"
effect: "READ"
effect_confidence: 0.832
capabilities[0]
risk_severity: "INFO"
fingerprint: "2f023ff571eae14d96a9b40a57b20fd5251cb845f7489d066816d8d357a83932"
input_schema_fingerprint: "4dd264a0a189df2992326803cb541746af98ee0c5e175c0be461ffce4de024fa"
annotations{5}
title: "Decode a UK plate"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
3{9}
name: "free_check"
title: "Free check of a UK car"
effect: "READ"
effect_confidence: 0.524
capabilities[0]
risk_severity: "INFO"
fingerprint: "cc882eca7660be2cc6d4fda64594d8f395def8fcd5e14d8f47d33a7322da83c9"
input_schema_fingerprint: "7d0386e2cd69c19674748e507346ec0bcc9fe4cfc5b79339cd202fd42e621546"
annotations{5}
title: "Free check of a UK car"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: true
4{9}
name: "full_report"
title: "Detailed report of an unlocked car"
effect: "READ"
effect_confidence: 0.595
capabilities[0]
risk_severity: "INFO"
fingerprint: "7c384ab315e4d89758a19d742f7ebbef6b194d00c5a3e2359c75f17091c1d9e9"
input_schema_fingerprint: "c8639d9cfdbbbd7bf79ba57deee3a7e4403d49eb39228d32d9df0709e77f793c"
annotations{5}
title: "Detailed report of an unlocked car"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: true
5{9}
name: "mot_index"
title: "MOT Index fleet statistics"
effect: "WRITE"
effect_confidence: 0.405
capabilities[0]
risk_severity: "LOW"
fingerprint: "db93a6de13d7eecbf07ff4017250e5775d94a3aafc16a1add2604ee16b1f7e1c"
input_schema_fingerprint: "6beb489bebc18f1316c6010187006ec03e422e9fe264f74476e181d5d81e07ac"
annotations{5}
title: "MOT Index fleet statistics"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
6{9}
name: "my_reports"
title: "Your unlocked cars and recent checks"
effect: "READ"
effect_confidence: 0.762
capabilities[0]
risk_severity: "INFO"
fingerprint: "e859cb1eaf8a659cf56e47a7581b7951ede868d92a311d3628f8f380b880bc49"
input_schema_fingerprint: "1f1d14293354986540b6c987e0587de1dc1abf227f6e0c50377577da235e492f"
annotations{5}
title: "Your unlocked cars and recent checks"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
7{9}
name: "resolve_vehicle"
title: "Resolve a vehicle plate"
effect: "READ"
effect_confidence: 0.921
capabilities[1]
0{2}
capability: "EXTERNAL_COMMUNICATION"
confidence: 0.735
risk_severity: "INFO"
fingerprint: "699e847298308ef785b8613f69e73a2bd08b3c834009fafc4e6192876b8ffefc"
input_schema_fingerprint: "be0c53e89f4975c970a4546147dd64e35ddb9000408b62a3dab96801ffe8c25d"
annotations{5}
title: "Resolve a vehicle plate"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: true
8{9}
name: "sample_report"
title: "Sample detailed report"
effect: "READ"
effect_confidence: 0.879
capabilities[0]
risk_severity: "INFO"
fingerprint: "f4226130b5477c6f3406d873db7681e4876e7a074b382e6bd44b2ae87cd31202"
input_schema_fingerprint: "641dbcbbe6b68f3940609545de6ceab825ea0062b257b5829ed65bf63d88d5c2"
annotations{5}
title: "Sample detailed report"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
9{9}
name: "unlock_report"
title: "Unlock a detailed report"
effect: "WRITE"
effect_confidence: 0.822
capabilities[1]
0{2}
capability: "PERSONAL_DATA"
confidence: 0.567
risk_severity: "LOW"
fingerprint: "dc466e927d3b8fc3580918dcfe735957d765471b489ca0f987812580c3d243cc"
input_schema_fingerprint: "f8d3624e2837289b4423b9d8242d5731b48624e046e63fb64775ce9d2f489acb"
annotations{5}
title: "Unlock a detailed report"
readOnlyHint: false
destructiveHint: false
idempotentHint: true
openWorldHint: true
10{9}
name: "viewing_advice"
title: "Advice for viewing a car"
effect: "READ"
effect_confidence: 0.72
capabilities[0]
risk_severity: "INFO"
fingerprint: "b5e956a191fb5f8802bf351c8cef2142a77c7e6921ddb86460482f519e6aedc5"
input_schema_fingerprint: "29a4974d7b61411c8c686a3a6ee2d7520c1d900c27bebe31125ca54b17b7967b"
annotations{5}
title: "Advice for viewing a car"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: true
resources[1]
0{4}
key: "regtail://docs/agent-guide"
kind: "resource"
mime_type: "text/markdown"
fingerprint: "f30ea8051bb6a8bb99b99903fe7ff2de450e4e9ab00db7a0bfc66ea26992ff4f"
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: "regtail.com"
registrable_domain: "regtail.com"
source: "transport"
findings[3]
0{6}
check_id: "SQ-REPO-MISSING"
category: "provenance"
severity: "LOW"
title: "No source repository linked"
subject_type: "server"
subject_name: null
1{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
2{6}
check_id: "SQ-TOOL-INJECTION-INSTRUCTIONS"
category: "prompt_injection"
severity: "MEDIUM"
title: "Instructions addressed to the AI model"
subject_type: "tool"
subject_name: "sample_report"
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: "com.regtail/regtail"
registry_content_sha256: "7ee12383b737996e93cdbf56fe5441b011a592fe346ad252c9936d3969d60969"
scan_snapshot_fingerprint: "b09076352b798f450976e52e81c46a9ebe92a22dc3243fd3aab5c7b6ec4f1d5d"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T22:58:40.846Z"
observed_at: "2026-11-14T12:42:34.136+00:00"
registry_published_at: "2026-10-21T11:16:47.401456+00:00"
registry_updated_at: null