OpenAccountants
io.github.openaccountants/openaccountants
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/639f5947-1165-4957-a0c1-6be84bd0bec7/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.openaccountants/openaccountants"
title: "OpenAccountants"
description: "Tax skills in 190+ jurisdictions. Sources and accountant approval status shown per skill."
version: "1.4.0"
homepage_url: "https://www.openaccountants.com"
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "io.github.openaccountants"
display_name: "io.github.openaccountants"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository{5}
url: "https://github.com/openaccountants/openaccountants"
provider: "github"
owner: "openaccountants"
name: "openaccountants"
verified: false
packages[0]
transports[1]
0{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://www.openaccountants.com/api/mcp"
endpoint_host: "www.openaccountants.com"
auth_type: "none"
auth{3}
type: "none"
authorization_servers[0]
scopes[0]
protocol{4}
era: "legacy"
negotiated_version: "2025-03-26"
supported_versions[0]
transport_type: "streamable-http"
tools[12]
0{9}
name: "check_audit_exemption"
title: "Check statutory audit exemption"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "f7fd71e118691f71cff17bd711e32b0b9c7c24bf26d36035046953f9e4636a33"
input_schema_fingerprint: "4682324cfe89a64935bf1d5e043b61d48a9dca44ef5def6b36b576e5d5e2af0a"
annotations{5}
title: "Check statutory audit exemption"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
1{9}
name: "compute"
title: "Compute a tax figure with tested code"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "7caadf2a4d0e999ef71b0ca76c83f437a5f8a8404220b3517d4abf5648abfc76"
input_schema_fingerprint: "cf5659f822c53d93162f5deb88f5b2cb3ba50dd9a67ecaba6807aab2df1898e4"
annotations{5}
title: "Compute a tax figure with tested code"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
2{9}
name: "get_deadlines"
title: "Tax filing deadlines"
effect: "READ"
effect_confidence: 0.798
capabilities[1]
0{2}
capability: "LEGAL"
confidence: 0.558
risk_severity: "INFO"
fingerprint: "155e3f4a28671310896d12d427e9be2c230f87942c89fd8d6da49b8d05a422b6"
input_schema_fingerprint: "bb8da8e2c6e076d2f16c928f884f8a11cfa5c56e8b4505ebc7c9aaa57225e717"
annotations{5}
title: "Tax filing deadlines"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
3{9}
name: "get_quote"
title: "Get an OpenAccountants fee estimate"
effect: "WRITE"
effect_confidence: 0.533
capabilities[1]
0{2}
capability: "PERSONAL_DATA"
confidence: 0.567
risk_severity: "LOW"
fingerprint: "91c1cce0a79d476d7e7fb826a418e8278dfef4028d4c9024306938750985f417"
input_schema_fingerprint: "bdbf9d2c81086d3975bcce90721a626e5eabb4e6bb3456669102607e04c3b405"
annotations{5}
title: "Get an OpenAccountants fee estimate"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
4{9}
name: "get_skill"
title: "Read a tax skill"
effect: "READ"
effect_confidence: 0.933
capabilities[0]
risk_severity: "INFO"
fingerprint: "e1d0994991cdb7847f59e49a9735fb8a465c3df79b6f7bb7b86f0accb542f669"
input_schema_fingerprint: "07b8580d9b95b5b35a0020130b7efef471019c89507b98faa9d359beca51ab20"
annotations{5}
title: "Read a tax skill"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
5{9}
name: "list_jurisdictions"
title: "List all jurisdictions covered"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "c41427deb33bd2349360ed94b7bb76b45cc80821b0b9171355357da16cc412a3"
input_schema_fingerprint: "efddc7bd8bbcef73a14eb1ace1ffdaec81e518ef1e13c1e9271d0b8acb694a49"
annotations{5}
title: "List all jurisdictions covered"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
6{9}
name: "list_verifiers"
title: "List named accountant verifiers"
effect: "READ"
effect_confidence: 0.921
capabilities[0]
risk_severity: "INFO"
fingerprint: "b44a354a99378052bba22301a6bf71cd707e97abc1da5bab9831064b5af011df"
input_schema_fingerprint: "6946e780695e6ef11e837816712f0758efe7259008c4c67d598887c1f48ba7cd"
annotations{5}
title: "List named accountant verifiers"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
7{9}
name: "search_rules"
title: "Look up tax rates and rules"
effect: "READ"
effect_confidence: 0.921
capabilities[2]
0{2}
capability: "PAYMENT"
confidence: 0.61
1{2}
capability: "PERMISSION_MANAGEMENT"
confidence: 0.53
risk_severity: "LOW"
fingerprint: "4aebf29f8030dc6bff9a5530575ef52797feb3ae4120668e0d4839ddd8b38b2d"
input_schema_fingerprint: "dc32d140be3403b9f4020afe664fd80596506c942fa81d95baaee427099f37e7"
annotations{5}
title: "Look up tax rates and rules"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
8{9}
name: "search_skills"
title: "Search tax skills by topic"
effect: "READ"
effect_confidence: 0.933
capabilities[2]
0{2}
capability: "LEGAL"
confidence: 0.584
1{2}
capability: "PERMISSION_MANAGEMENT"
confidence: 0.624
risk_severity: "INFO"
fingerprint: "d31296c0d5d68144ff3b0672d4909af21a6e58bc331d7914080977c06c888459"
input_schema_fingerprint: "9546aaf6f6f9b99ca8d025da3f8a53bfb839d31518ce9a2789b7d9896a945a6d"
annotations{5}
title: "Search tax skills by topic"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
9{9}
name: "share_with_openaccountants"
title: "Share this with OpenAccountants"
effect: "WRITE"
effect_confidence: 0.848
capabilities[1]
0{2}
capability: "PERSONAL_DATA"
confidence: 0.891
risk_severity: "LOW"
fingerprint: "4f8ef47455187aa4bc1442b77e43fdd9f70605c28471bf38051fd48cbd174c19"
input_schema_fingerprint: "1da19bc3fe0ce1eb11b46d7873cf41f073db1052ecb4e0507fe5eba22bf375de"
annotations{5}
title: "Share this with OpenAccountants"
readOnlyHint: false
destructiveHint: true
idempotentHint: false
openWorldHint: false
10{9}
name: "start"
title: "Answer a tax question (call first)"
effect: "WRITE"
effect_confidence: 0.861
capabilities[2]
0{2}
capability: "LEGAL"
confidence: 0.558
1{2}
capability: "PERSONAL_DATA"
confidence: 0.623
risk_severity: "HIGH"
fingerprint: "09015fc802494647af0b38f2b71d511aa02edd7f52ddaa65abe64c050f53073d"
input_schema_fingerprint: "e378987b50a86d49b103f987af05c7186bc8d81131706f3b4e80d569306f6dbe"
annotations{5}
title: "Answer a tax question (call first)"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: false
11{9}
name: "validate_vat_number"
title: "Validate an EU VAT number (live VIES lookup)"
effect: "READ"
effect_confidence: 0.933
capabilities[1]
0{2}
capability: "PERSONAL_DATA"
confidence: 0.538
risk_severity: "LOW"
fingerprint: "50e3e0db1a69f935b10d6aae510a9702c655036a73f9c363b3d44dc59bd2b862"
input_schema_fingerprint: "78f5108be12da24bea6003eb311ddcec87fcfa984852d023f25937afc4bef766"
annotations{5}
title: "Validate an EU VAT number (live VIES lookup)"
readOnlyHint: true
destructiveHint: false
idempotentHint: true
openWorldHint: true
resources[0]
prompts[13]
0{2}
name: "compare-jurisdictions"
fingerprint: "2b5e454c9f085af59853800a8eebd2971a8db45b173a9ea00f9d027711178bdf"
1{2}
name: "cross-border-intake"
fingerprint: "902912b8906c6f0bca20f09c1987587fee1d27ac47248ed9d46fd39f8989fca9"
2{2}
name: "find-deductions"
fingerprint: "e93c325b2342bbe5d6d574cd44ec6b8a00b81059532438a6dc03e4fea43744f5"
3{2}
name: "malta-freelancer"
fingerprint: "e40acaa2f62985288b170a8f5e4f736f1965934d6ec9a3e83201ff534813113f"
4{2}
name: "portugal-self-employed"
fingerprint: "6656114160e2d8d2051aee5938f12df9bf8ca45575be5dee66325a920848f4fe"
5{2}
name: "skill-feedback"
fingerprint: "e469f54e081b901ad229fe67749a856affbf1685029489fc191450d2ce297392"
6{2}
name: "skill-review"
fingerprint: "48e0eaa3df83f802c469de908ed98d7d8fd30985a22823d06d48346adfc9e859"
7{2}
name: "south-africa-income-tax"
fingerprint: "4b8362dc8511a7e1cfa8a2b109f743e85e6c693cef782d737c70ca7c847ffbb0"
8{2}
name: "tax-return"
fingerprint: "481466f660710df9c2059357591ae29eb79d58135dfbacbe7dd61d780cd3bfec"
9{2}
name: "uk-capital-gains"
fingerprint: "85e1ffc121087a9d5f926cd61f84f7d0b07fb385a9c5c854335e35affc1816e9"
10{2}
name: "uk-self-employed"
fingerprint: "9cdda5cd4e36300652ced508d762ae90e178ade97cf3182f0b2c07cf742f5450"
11{2}
name: "us-schedule-c"
fingerprint: "f22f7445d3250dae41ed65765fcde10710c8972b2f58efd500c8d19deeb975da"
12{2}
name: "vat-check"
fingerprint: "829a2a9a2996b902c2c6126e0da488433551f8bae34b60b578dd53d083531070"
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: "www.openaccountants.com"
registrable_domain: "openaccountants.com"
source: "transport"
findings[17]
0{6}
check_id: "SQ-PROMPT-INJECTION"
category: "prompt_injection"
severity: "MEDIUM"
title: "Prompt metadata contains directives to the AI model"
subject_type: "server"
subject_name: null
1{6}
check_id: "SQ-PROMPT-INJECTION"
category: "prompt_injection"
severity: "MEDIUM"
title: "Prompt metadata contains directives to the AI model"
subject_type: "server"
subject_name: null
2{6}
check_id: "SQ-PROMPT-INJECTION"
category: "prompt_injection"
severity: "MEDIUM"
title: "Prompt metadata contains directives to the AI model"
subject_type: "server"
subject_name: null
3{6}
check_id: "SQ-PROMPT-INJECTION"
category: "prompt_injection"
severity: "MEDIUM"
title: "Prompt metadata contains directives to the AI model"
subject_type: "server"
subject_name: null
4{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
5{6}
check_id: "SQ-SERVER-INSTRUCTIONS-INJECTION"
category: "prompt_injection"
severity: "MEDIUM"
title: "Server instructions contain directives to the AI model"
subject_type: "server"
subject_name: null
6{6}
check_id: "SQ-TOOL-ANNOTATION-UNDERCLAIM"
category: "annotations"
severity: "LOW"
title: "Annotations understate what the tool does"
subject_type: "tool"
subject_name: "get_quote"
7{6}
check_id: "SQ-TOOL-ANNOTATION-UNDERCLAIM"
category: "annotations"
severity: "MEDIUM"
title: "Annotations understate what the tool does"
subject_type: "tool"
subject_name: "start"
8{6}
check_id: "SQ-TOOL-CROSS-TOOL-REFERENCE"
category: "prompt_injection"
severity: "MEDIUM"
title: "Gives instructions about other tools"
subject_type: "tool"
subject_name: "get_skill"
9{6}
check_id: "SQ-TOOL-CROSS-TOOL-REFERENCE"
category: "prompt_injection"
severity: "MEDIUM"
title: "Gives instructions about other tools"
subject_type: "tool"
subject_name: "search_skills"
10{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: "search_rules"
11{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: "start"
12{6}
check_id: "SQ-TOOL-EXFIL-SHAPED-PARAM"
category: "schema"
severity: "HIGH"
title: "Free-text parameter commonly used to collect conversation data"
subject_type: "tool"
subject_name: "share_with_openaccountants"
13{6}
check_id: "SQ-TOOL-INJECTION-INSTRUCTIONS"
category: "prompt_injection"
severity: "MEDIUM"
title: "Instructions addressed to the AI model"
subject_type: "tool"
subject_name: "get_quote"
14{6}
check_id: "SQ-TOOL-INJECTION-INSTRUCTIONS"
category: "prompt_injection"
severity: "MEDIUM"
title: "Instructions addressed to the AI model"
subject_type: "tool"
subject_name: "share_with_openaccountants"
15{6}
check_id: "SQ-TOOL-INJECTION-INSTRUCTIONS"
category: "prompt_injection"
severity: "MEDIUM"
title: "Instructions addressed to the AI model"
subject_type: "tool"
subject_name: "validate_vat_number"
16{6}
check_id: "SQ-TOOL-LENGTH-ANOMALY"
category: "tool_design"
severity: "LOW"
title: "Unusually long model-facing text"
subject_type: "tool"
subject_name: "compute"
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.openaccountants/openaccountants"
registry_content_sha256: "53348feb10d07bb964dd7c526e0511d146de5b55c7cca5b676150f4fd497531d"
scan_snapshot_fingerprint: "6020bf2bd28c66d76bab6995bbd870cff1af127b4cf473e2236cffc9339f308a"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T01:51:30.389Z"
observed_at: "2026-11-14T02:30:56.446+00:00"
registry_published_at: "2026-11-13T18:12:19.490446+00:00"
registry_updated_at: null