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/86aab980-3df1-439c-985f-579d21ce076e/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.headlesson/catalog"
title: "headlesson"
description: "Find and compare headless apps (CLI, MCP, API) for agents, with sources, lessons and changes."
version: "0.1.0"
homepage_url: "https://headlesson.com"
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "com.headlesson"
display_name: "com.headlesson"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository: null
packages[0]
transports[1]
0{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://mcp.headlesson.com/mcp"
endpoint_host: "mcp.headlesson.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[4]
0{9}
name: "headlesson_feedback"
title: "Send feedback to headlesson"
effect: "WRITE"
effect_confidence: 0.4
capabilities[0]
risk_severity: "LOW"
fingerprint: "c1342779cf69edf70deec590d93dbfb24472f6627cefdb607930e885bc388185"
input_schema_fingerprint: "13c6e33872659b1145900a25850c647354e59746a3d6b549b748b4787f28a9f3"
annotations{5}
title: "Send feedback to headlesson"
readOnlyHint: false
destructiveHint: false
idempotentHint: null
openWorldHint: false
1{9}
name: "headlesson_get"
title: "Get tried steps, test results and pitfalls"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "c2b4f486cd90cc1542c681524f332b7a7ab02dab0353950eeab5ced676383979"
input_schema_fingerprint: "67cac30d6259383824e8854110d0bc2c600c758d4b1eb8ad705560dc06522c3c"
annotations{5}
title: "Get tried steps, test results and pitfalls"
readOnlyHint: true
destructiveHint: false
idempotentHint: null
openWorldHint: true
2{9}
name: "headlesson_search"
title: "Find tested tools for a task"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "08a30e7e8a4cd0cffdfa25c44ed04c2add614c9f9b54a6ddd039b0bac4ca2fcf"
input_schema_fingerprint: "d1c3edcca93f8107aab36e2160c1f87bb469be46585f482eb208b91aa83b5c09"
annotations{5}
title: "Find tested tools for a task"
readOnlyHint: true
destructiveHint: false
idempotentHint: null
openWorldHint: true
3{9}
name: "headlesson_whats_new"
title: "Changes in agent tools since a date"
effect: "WRITE"
effect_confidence: 0.783
capabilities[0]
risk_severity: "LOW"
fingerprint: "d5591633f68ad74b4df84ed8ee628e726b131fb06484de96c03771b3a0d24229"
input_schema_fingerprint: "bf21773e2ef4ed056b77043498e96895aeb30b1a47426d99780360caa1a0547e"
annotations{5}
title: "Changes in agent tools since a date"
readOnlyHint: true
destructiveHint: false
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: "mcp.headlesson.com"
registrable_domain: "headlesson.com"
source: "transport"
findings[6]
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-ANNOTATION-UNDERCLAIM"
category: "annotations"
severity: "MEDIUM"
title: "Annotations understate what the tool does"
subject_type: "tool"
subject_name: "headlesson_whats_new"
3{6}
check_id: "SQ-TOOL-CONCEALMENT"
category: "prompt_injection"
severity: "HIGH"
title: "Text asks the AI model to hide actions from the user"
subject_type: "tool"
subject_name: "headlesson_search"
4{6}
check_id: "SQ-TOOL-EXFIL-DIRECTIVE"
category: "prompt_injection"
severity: "HIGH"
title: "Asks the AI model to pass conversation data or secrets"
subject_type: "tool"
subject_name: "headlesson_feedback"
5{6}
check_id: "SQ-TOOL-EXFIL-DIRECTIVE"
category: "prompt_injection"
severity: "HIGH"
title: "Asks the AI model to pass conversation data or secrets"
subject_type: "tool"
subject_name: "headlesson_search"
trust{9}
registry_namespace: "verified_upstream"
publisher_identity: "unverified"
organization: "unverified"
domain: "unverified"
repository: "not_provided"
source_provenance: "unknown"
security_scan: "findings_detected"
privacy_transparency: "not_provided"
monitoring: "active"
provenance{4}
registry_name: "com.headlesson/catalog"
registry_content_sha256: "f3f6fabf388a49f1995eb97986f425d1e054afb70565c7f195961df3cd979013"
scan_snapshot_fingerprint: "93d29d90fba1021c3febb1d43d3decdd7e305007739c1c69b214123f889f57c4"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T04:03:25.415Z"
observed_at: "2026-11-14T06:32:49.342+00:00"
registry_published_at: "2026-10-10T02:01:15.547715+00:00"
registry_updated_at: null