Skip to content
Squatch MCP
Sign in

io.github.cyanheads/oeis-mcp-server

io.github.cyanheads/oeis-mcp-server

by io.github.cyanheads· v0.2.0Source: Official MCP Registry
Sign in to watchSign in to claim this server

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/cdeec696-fcd5-4ac2-a28d-8b289fa3daad/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.cyanheads/oeis-mcp-server"
title: null
description: "Identify integer sequences by terms, search the OEIS, read formulas, programs, b-files, cross-refs."
version: "0.2.0"
homepage_url: null
source: "official_registry"
upstream_status: "active"
publisher{4}
namespace: "io.github.cyanheads"
display_name: "io.github.cyanheads"
type: "registry_namespace"
status: "unclaimed"
organization: null
repository{5}
url: "https://github.com/cyanheads/oeis-mcp-server"
provider: "github"
owner: "cyanheads"
name: "oeis-mcp-server"
verified: false
packages[2]
0{4}
registry_type: "npm"
identifier: "@cyanheads/oeis-mcp-server"
version: "0.2.0"
transport: "stdio"
1{4}
registry_type: "npm"
identifier: "@cyanheads/oeis-mcp-server"
version: "0.2.0"
transport: "streamable-http"
transports[3]
0{5}
kind: "package"
type: "stdio"
endpoint_url: null
endpoint_host: null
auth_type: "unknown"
1{5}
kind: "package"
type: "streamable-http"
endpoint_url: null
endpoint_host: null
auth_type: "unknown"
2{5}
kind: "remote"
type: "streamable-http"
endpoint_url: "https://oeis.caseyjhand.com/mcp"
endpoint_host: "oeis.caseyjhand.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[6]
0{9}
name: "oeis_get_cross_refs"
title: "Get OEIS Cross-References"
effect: "READ"
effect_confidence: 0.888
capabilities[0]
risk_severity: "INFO"
fingerprint: "ad5f1a7a0ca2cec697fab121ea5d6c71b8a71a1f31f05ca00d8c857f4c35c55f"
input_schema_fingerprint: "ea008e04373b065ed3fd653da86839bf5a9f2564dd9d64741f57a4dd2072110f"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: true
1{9}
name: "oeis_get_sequence"
title: "Get OEIS Sequence"
effect: "READ"
effect_confidence: 0.888
capabilities[0]
risk_severity: "INFO"
fingerprint: "a7d93f7128a000153da11c7ce4e5ea1aff76fe500da137a0b2ffa357e62451f1"
input_schema_fingerprint: "ad263e54fdc5a031a113a3e7383bd43f012c67a1e7397f4bccbbaf9e0aedf71e"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: true
2{9}
name: "oeis_get_terms"
title: "Get OEIS Sequence Terms"
effect: "READ"
effect_confidence: 0.888
capabilities[0]
risk_severity: "INFO"
fingerprint: "aba653c5a1b456cfc70895977b6e60128c64211d8e0812461a976ad484867dbc"
input_schema_fingerprint: "8b6c1369f7c83cdc20fbc0be0b4ec5bb0958344d6a7a580128d497662e4808ae"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: true
3{9}
name: "oeis_identify_sequence"
title: "Identify OEIS Sequence"
effect: "READ"
effect_confidence: 0.888
capabilities[0]
risk_severity: "INFO"
fingerprint: "400b893a3bd4bdcce4b9708323cbe4b2c13937a1dc0082298b3d38a6714ba18d"
input_schema_fingerprint: "b082d604f3544e64e835234a97018385101ee42ec5318cb363faf61c562f0c86"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: true
4{9}
name: "oeis_list_reference"
title: "List OEIS Reference"
effect: "READ"
effect_confidence: 0.888
capabilities[0]
risk_severity: "INFO"
fingerprint: "b5ed7ac3a353659d30521f68788667abc883b2d90e6137f8d11671233a70d0f9"
input_schema_fingerprint: "d5db31852d307199a45b9aaff7a32aae85ca48e2bde9d65e4a722639aeaf52c8"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: false
5{9}
name: "oeis_search_sequences"
title: "Search OEIS Sequences"
effect: "EXECUTE"
effect_confidence: 0.6
capabilities[0]
risk_severity: "CRITICAL"
fingerprint: "f564310da1caa9eb091713796e48e42346f2a3bd48d3998c456e85af4f214181"
input_schema_fingerprint: "139c8b74716f5c708d2a27afd85683650e00e392c9ea333d275b36e25302edd5"
annotations{5}
title: null
readOnlyHint: true
destructiveHint: null
idempotentHint: true
openWorldHint: true
resources[3]
0{4}
key: "skill://oeis-guide/SKILL.md"
kind: "resource"
mime_type: "text/markdown"
fingerprint: "70d1b9555fd7d2fa08a859956d72b4be0e235191030a944fd2090800147798e2"
1{4}
key: "oeis://sequence/{aNumber}"
kind: "template"
mime_type: "application/json"
fingerprint: "b53e4682d2cceeedbab00f48133818eed9c7d17fb765763274ab74b8eb1eab8f"
2{4}
key: "skill://{+path}"
kind: "template"
mime_type: null
fingerprint: "9777dc7f1cf468158c157032a0ccebf9b50270f4e8753af9ccaf2fe99890ccf0"
prompts[0]
extensions[1]
0: "io.modelcontextprotocol/skills"
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: "oeis.caseyjhand.com"
registrable_domain: "caseyjhand.com"
source: "transport"
findings[5]
0{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
1{6}
check_id: "SQ-TOOL-ANNOTATION-UNDERCLAIM"
category: "annotations"
severity: "MEDIUM"
title: "Annotations understate what the tool does"
subject_type: "tool"
subject_name: "oeis_search_sequences"
2{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: "oeis_get_terms"
3{6}
check_id: "SQ-TOOL-OVERLY-BROAD"
category: "tool_design"
severity: "MEDIUM"
title: "Runs arbitrary code with open-world access"
subject_type: "tool"
subject_name: "oeis_search_sequences"
4{6}
check_id: "SQ-TOOL-TITLE-EFFECT-MISMATCH"
category: "deceptive_metadata"
severity: "HIGH"
title: "Display title describes a lower-impact action than the name"
subject_type: "tool"
subject_name: "oeis_search_sequences"
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.cyanheads/oeis-mcp-server"
registry_content_sha256: "ee23983a8a7194dfd975b55ec8a7115f2303cd193a2d154d88bc99f5828a634d"
scan_snapshot_fingerprint: "0691454c5eaab34f3a33dc623c14a1584d2b6b98d576fa58cc9635a7afe68dc7"
scanner_version: "1.0.0"
timestamps{4}
generated_at: "2026-11-15T02:14:19.931Z"
observed_at: "2026-11-11T12:21:29.063+00:00"
registry_published_at: "2026-11-11T05:51:11.500046+00:00"
registry_updated_at: null