Payload Validator
com.gumballtools/payload-validator
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/6d450e92-98b3-4549-b8a2-b4dc18e19a16/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.gumballtools/payload-validator"
title: "Payload Validator"
description: "Validate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings."
version: "0.1.0"
homepage_url: "https://payload-validator.gumballtools.com"
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "com.gumballtools"
display_name: "com.gumballtools"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository{5}
url: "https://github.com/bwalvoord/gumball"
provider: "github"
owner: "bwalvoord"
name: "gumball"
verified: false
packages[0]
transports[1]
0{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://payload-validator.gumballtools.com/api/mcp"
endpoint_host: "payload-validator.gumballtools.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[5]
0{9}
name: "validate_auto"
title: "Detect the format and validate"
effect: "READ"
effect_confidence: 0.943
capabilities[0]
risk_severity: "INFO"
fingerprint: "e3e36241fe02f6709050bbfdfb92e5cdf19596c72f02016a907726c1a0c32d7b"
input_schema_fingerprint: "27cab9537c38841766ed4dee43cea0c81494adcbf6ec7ee39b2e26fe5ed45f15"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
1{9}
name: "validate_csv"
title: "Validate CSV"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "cb52f80820ace851902ed5e14f0127c1c65551d6d1bdb64a4d453f146e3e964b"
input_schema_fingerprint: "c5b8e5dbb1d49f6e9bc38fef805790acf3c7fcb4919a8c09629d56ace13937fa"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
2{9}
name: "validate_json"
title: "Validate JSON"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "02ac31fd8a0ec96b72e07e85318a859f78a7d877fcfcd463a707d5cee1ecaf14"
input_schema_fingerprint: "27cab9537c38841766ed4dee43cea0c81494adcbf6ec7ee39b2e26fe5ed45f15"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
3{9}
name: "validate_xml"
title: "Validate XML"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "ec7c1054f9fd846288841bbef776e2df025cc7d39f5347b86dbe91ee23268815"
input_schema_fingerprint: "27cab9537c38841766ed4dee43cea0c81494adcbf6ec7ee39b2e26fe5ed45f15"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: null
openWorldHint: false
4{9}
name: "validate_yaml"
title: "Validate YAML"
effect: "READ"
effect_confidence: 0.933
capabilities[1]
0{2}
capability: "CLOUD_INFRASTRUCTURE"
confidence: 0.594
risk_severity: "INFO"
fingerprint: "cf2673a6ed0bc52e8088e9f3498906f331f57f1fdfe43e062a922f1fe322ee66"
input_schema_fingerprint: "27cab9537c38841766ed4dee43cea0c81494adcbf6ec7ee39b2e26fe5ed45f15"
annotations{5}
title: null
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: "payload-validator.gumballtools.com"
registrable_domain: "gumballtools.com"
source: "transport"
findings[3]
0{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: "validate_auto"
1{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: "validate_csv"
2{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: "validate_json"
trust{9}
registry_namespace: "verified_upstream"
publisher_identity: "unverified"
organization: "unverified"
domain: "unverified"
repository: "unverified"
source_provenance: "unknown"
security_scan: "findings_detected"
privacy_transparency: "not_provided"
monitoring: "active"
provenance{4}
registry_name: "com.gumballtools/payload-validator"
registry_content_sha256: "ebff6fc5173e5d01eb51a2b41b2a23e35ee9b51aaecebe8c6ec001e02f4ab99d"
scan_snapshot_fingerprint: "e9b1c3bbdfc11bee7e8d083fc1e3908888fceb79208a863ef531b7cb6b29a517"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T04:52:33.732Z"
observed_at: "2026-11-14T06:22:24.668+00:00"
registry_published_at: "2026-09-06T14:22:53.445211+00:00"
registry_updated_at: null