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io.github.cyanheads/worms-marine-taxa-mcp-server

REMOTE · WORMS-MARINE-TAXA.CASEYJHAND.COM · 2 COMPONENTS

Resolve WoRMS marine species names; fetch classifications, synonyms, distributions, traits, and IDs.

+4 this week 80 Trust /100

Last scanned (12 hours ago)

Scores higher than 81% of remote servers

Reachable. Last reached 5 Nov 2026.

Category Health and Science

Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security83
  • The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
  • No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation. See how to fix → View diagnostics → Partial
  • HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
  • The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
  • DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
Schema Quality & AI Usability71
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 2841 tokens (~315/item across 9 items; 8 tools + 1 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management40
  • Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a current MCP spec version (2026-07-28).Pass
What we tested

Checks we ran (13)

  • TLS certificate
  • Authorization
  • HTTPS
  • HSTS header
  • DNSSEC
  • Transport
  • Schema quality
  • Stability
  • Tool coverage
  • Injection markers
  • Destructive annotations
  • Judged manipulation
  • MCP protocol

Does not apply to this hosted endpoint (2)

  • Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
  • Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.

The score does not measure everything. What the score does not measure →

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 5 Nov 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

  • 3 Nov 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

  • 1 Nov 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

  • 30 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

  • 29 Oct 26 +3
    • The server rewrote its instructions, which are the text every model session reads security
    • Tool “worms_resolve_taxon” rewrote its description, which is the text the model reads security
    • First check of Schema quality: 100 functional
    • New resource “worms-marine-taxa-guide” functional
    • Server version: 0.1.3 → 0.2.0 functional
    • “worms_get_classification” reworded the description of “marineOnly” cosmetic
    • “worms_resolve_taxon” reworded the description of “marineOnly” cosmetic
  • 28 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

  • 26 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

  • 25 Oct 26 0
    • Stability: unverified → 0.03 ▲ functional
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 5 Nov 2026 · Probed https://worms-marine-taxa.caseyjhand.com/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=caseyjhand.com CN=WE1,O=Google Trust Services,C=US 2 Nov 2026 31 Jan 2027 ECDSA 256 ECDSA-SHA256 995a30681ab772540e934241ca1d576c
SANs: caseyjhand.com, *.caseyjhand.com
CN=WE1,O=Google Trust Services,C=US (CA) CN=GTS Root R4,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 ECDSA 256 ECDSA-SHA384 7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 15 Nov 2023 28 Jan 2028 ECDSA 384 SHA256-RSA 7fe530bf331343bedd821610493d8a1b

Background: What to check on a remote MCP endpoint →

DNSSEC secure

Validation of worms-marine-taxa.caseyjhand.com. — Secure

Zone DS Keys Algorithms Outcome
. Trust anchor 20326, 38696 8, 8 Verified
com. DS published 19718 13 Verified
caseyjhand.com. DS published 2371 13 Verified
worms-marine-taxa.caseyjhand.com. Verified address RRset verified with the apex keys
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=63072000; includeSubDomains; preload
x-content-type-options nosniff

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://worms-marine-taxa.caseyjhand.com/mcp Verified 200
http (plaintext) http://worms-marine-taxa.caseyjhand.com/mcp HTTPS enforced 301 https://worms-marine-taxa.caseyjhand.com/mcp
MCP tools · 8 exposed · ~2,401 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
worms_crosswalk_id ~226

Crosswalk an AphiaID from worms_resolve_taxon to one or all nine external identifier systems, or reverse an externalId with required type to a full taxon record. Supply exactly one selector. Forward resultOffset indexes whole identifiers across types in requested order; resume nextResultOffset with unchanged selectors. typeTotals distinguishes successful absence from IDs on another segment; failed types remain separate. IDs stay opaque, including leading zeros and LSIDs. No IDs cannot establish taxon absence; IUCN identifiers are not threat categories.

NameTypeReqDescription
aphiaId––Forward numeric AphiaID, decimal string, or canonical WoRMS LSID; mutually exclusive with externalId.
externalIdstring–Reverse selector; opaque identifier up to 512 characters; blank omitted.
resultOffsetinteger–Zero-based forward identifier position across types in requested order; repeat unchanged selectors. Inactive for reverse lookup.
typestring–Required for reverse; omit forward to query all nine types. Codes ignore case and surrounding whitespace. See worms_list_reference external_id_types.
NameTypeReqDescription
aphiaId––Supplied or matched taxon ID; null for reverse misses.
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
directionstring–Selected crosswalk direction.
echoobject–Effective crosswalk selectors.
errorobject–Present when the call failed. Absent on success.
externalIdstring–Opaque reverse identifier, preserved as text.
failedTypesarray–Failed types in fixed vocabulary order.
foundboolean|null–Reverse match state; null in forward mode.
guidancestring|null–Guidance when no identifiers or reverse match are found.
idsobject–This segment of answered types; consult typeTotals to distinguish empty evidence from IDs on another segment.
nextResultOffset––Next local position; null when consumed.
noticestring–Partial-outage retry guidance.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
record––Reverse matched record only.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
returnedCountinteger–Whole scientific items returned on this segment.
totalCountinteger–Known local sequence length before pagination.
typestring–Explicitly selected identifier system.
typeTotalsobject–Answered types only; zero means successful absence; failed types are omitted.

No examples provided.

worms_get_classification ~266

Retrieve root-to-tip classification and optional direct children for an AphiaID or canonical WoRMS LSID. resultOffset indexes lineage followed by fetched children; consume nextResultOffset with unchanged options and upstream offset before advancing page.nextOffset and resetting resultOffset to zero. Missing ranks remain unknown; child offset and filters are inactive without includeChildren. A full fetched 50-row child page has uncertain continuation and can lead to an empty page. The submitted ID keeps its own recorded lineage; a notice names its linked accepted ID, distinguishing an accepted alternative representation from its preferred ID.

NameTypeReqDescription
aphiaId–yesPositive safe-integer AphiaID, decimal string, or canonical urn:lsid:marinespecies.org:taxname:<AphiaID>; outputs remain numeric.
extantOnlyboolean–Extant children only; inactive without includeChildren.
includeChildrenboolean–Also fetch one page of direct children.
marineOnlyboolean–Marine or brackish children only; inactive without includeChildren.
offsetinteger–One-based starting record, advancing by 50; default 1.
resultOffsetinteger–Zero-based position in lineage followed by fetched children; keep upstream offset unchanged until nextResultOffset is null.
NameTypeReqDescription
aphiaIdinteger–Positive safe-integer AphiaID; obtain from worms_resolve_taxon.
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
childrenarray–One page of direct children when requested and retrieved.
childrenErrorobject–Optional children retrieval failure.
echoobject–Effective options; child-only options inactive when includeChildren is false.
errorobject–Present when the call failed. Absent on success.
foundboolean–Whether classification exists.
guidancestring|null–Next step for absent classification.
nextResultOffset––Next local position; null when consumed.
noticestring–Linked accepted/preferred-AphiaID and empty-children-page guidance, in that order.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
pageobject–Children pagination only.
ranksarray–This segment of the root-to-tip lineage.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
returnedCountinteger–Whole scientific items returned on this segment.
statusErrorobject–Failed taxonomic-status read; evidence is unaffected, but whether the AphiaID is its accepted name is unknown.
totalCountinteger–Known local sequence length before pagination.

No examples provided.

worms_get_distributions ~455

Retrieve recorded distributions for an AphiaID or canonical WoRMS LSID in byte-budgeted segments; resume nextResultOffset as resultOffset with unchanged selectors and filters. WoRMS attaches records to individual name usages, so one AphiaID's rows can miss those of its synonyms: includeSynonyms combines the accepted taxon's rows with those of up to 10 synonyms per call, each row tagged sourceAphiaId; consume nextResultOffset before advancing synonymOffset to synonymUnion.nextSynonymOffset with resultOffset 0. Filters apply to the complete fetched set before pagination and combine by conjunction: recordStatus normalizes case and surrounding whitespace before exact matching; others use case-insensitive whole-value equality without trimming. Rows retain duplicates and source order; no rows does not prove biological or taxon absence. A notice names the linked accepted ID, distinguishing an accepted alternative representation from its preferred ID.

NameTypeReqDescription
aphiaId–yesPositive safe-integer AphiaID, decimal string, or canonical urn:lsid:marinespecies.org:taxname:<AphiaID>; outputs remain numeric.
establishmentMeansstring–Case-insensitive whole-value establishment filter, such as Alien; blank omitted. Observed values: worms_list_reference topic: distribution_terms.
includeSynonymsboolean–Combine the accepted taxon's records with its synonyms', 10 synonyms per call; rows then carry sourceAphiaId.
invasivenessstring–Case-insensitive whole-value invasiveness filter, such as Invasive; blank omitted. Observed values: worms_list_reference topic: distribution_terms.
occurrencestring–Case-insensitive whole-value occurrence filter, such as Established; blank omitted. Observed values: worms_list_reference topic: distribution_terms.
recordStatusstring–Record status valid, doubtful, or inaccurate; ignores case and surrounding whitespace; blank means no filter.
resultOffsetinteger–Zero-based local position; resubmit unchanged selectors and options.
synonymOffsetinteger–Zero-based synonym position; once nextResultOffset is null, resubmit synonymUnion.nextSynonymOffset here with resultOffset 0. Inactive without includeSynonyms.
NameTypeReqDescription
aphiaIdinteger–Positive safe-integer AphiaID; obtain from worms_resolve_taxon.
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
distributionsarray–Whole matching rows in this segment, in source order.
echoobject–Only effective filters; recordStatus is canonical lowercase, other populated values are unchanged.
errorobject–Present when the call failed. Absent on success.
filteredCountinteger–Rows passing every effective filter.
nextResultOffset––Next local position; null when consumed.
noticestring–Linked accepted/preferred-AphiaID and empty-evidence guidance, in that order.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
returnedCountinteger–Whole scientific items returned on this segment.
statusErrorobject–Failed taxonomic-status read; evidence is unaffected, but whether the AphiaID is its accepted name is unknown.
synonymUnionobject–Synonym union window; present only with includeSynonyms.
totalCountinteger–Known local sequence length before pagination.
unfilteredCountinteger–All recorded rows before filtering; with includeSynonyms, those of this window.

No examples provided.

worms_get_synonyms ~170

Retrieve synonyms for the accepted taxon linked from an AphiaID obtained with worms_resolve_taxon. Consume nextResultOffset within the same upstream offset before advancing page.nextOffset and resetting resultOffset to zero. A present name without an accepted ID has no synonym lookup; inspect it with worms_get_taxon. A full fetched 50-row page has uncertain continuation and may lead to an empty page.

NameTypeReqDescription
aphiaId–yesPositive safe-integer AphiaID, decimal string, or canonical urn:lsid:marinespecies.org:taxname:<AphiaID>; outputs remain numeric.
offsetinteger–One-based starting record, advancing by 50; default 1.
resultOffsetinteger–Zero-based local position; resubmit unchanged selectors and options.
NameTypeReqDescription
aphiaIdinteger–Positive safe-integer AphiaID; obtain from worms_resolve_taxon.
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
echoobject–Effective pagination.
errorobject–Present when the call failed. Absent on success.
foundboolean–Whether the supplied taxon exists.
guidancestring|null–Next step when no accepted taxon is known.
nextResultOffset––Next local position; null when consumed.
noticestring–Guidance for an empty synonym page past the first.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
pageobject–Pagination only when synonym retrieval occurred.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
returnedCountinteger–Whole scientific items returned on this segment.
synonymsarray–Whole synonym rows in this byte-budgeted segment.
totalCountinteger–Known local sequence length before pagination.
validAphiaId––Accepted taxon ID when known.

No examples provided.

worms_get_taxon ~389

Retrieve full Aphia records by numeric IDs or canonical WoRMS LSIDs in byte-budgeted segments. Resume nextInputOffset as inputOffset using unchanged aphiaIds and options; inputIndex preserves duplicate and missing positions. includeVernaculars (common names) or includeSources (original description, basis of record, and other sources) requires one submitted ID, one of the two per call; resume nextVernacularOffset as vernacularOffset or nextSourceOffset as sourceOffset, repeating the full primary record. sourceUse filters whole use values ignoring case before sourceOffset; populated values are not trimmed. Successful source results report sourceTotalCount before slicing and unfilteredSourceCount only with an effective filter. Optional failure retains the record without source counts; unknown facts remain omitted or null.

NameTypeReqDescription
aphiaIdsarrayyesNonempty original AphiaID list, with no total-input ceiling; at most 50 positions fetched per call. Resubmit unchanged with inputOffset, without deduplicating.
includeSourcesboolean–Retrieve the taxon sources, such as its original description and basis of record; requires exactly one submitted ID and cannot combine with includeVernaculars.
includeVernacularsboolean–Retrieve common names; requires exactly one submitted ID.
inputOffsetinteger–Zero-based local position; resubmit unchanged selectors and options.
sourceOffsetinteger–Zero-based position in the sourceUse-selected list for the singleton ID; repeat unchanged options. Inactive without includeSources.
sourceUsestring–Case-insensitive whole-value source use, such as original description; populated values are not trimmed, blanks omitted. Filters before sourceOffset; inactive without includeSources.
vernacularOffsetinteger–Zero-based common-name position for the singleton ID; repeat unchanged options. Inactive without includeVernaculars.
NameTypeReqDescription
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
deferredCountinteger–Number of original ID positions still deferred.
echoobject–Effective options.
errorobject–Present when the call failed. Absent on success.
nextInputOffset––Resume position in the unchanged original aphiaIds; null when consumed.
nextSourceOffset––Resume sources for the same singleton record; null when consumed or not requested.
nextVernacularOffset––Resume common names for the same singleton record; null when consumed or not requested.
noticestring–Guidance for deferred work.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultsarray–One positional result per processed ID.

No examples provided.

worms_get_traits ~283

Retrieve recorded attributes for an AphiaID or canonical WoRMS LSID, including inherited attributes by default. Resume nextResultOffset as resultOffset with unchanged selectors and options. Whole rows retain original preorder nodeIndex and parentIndex across pages; parents may be on earlier pages. measurementType keeps each matching node with its subtree and ancestors, indices unchanged; totalCount counts that set and unfilteredCount the whole tree. Values, references and inheritance markers remain unchanged; on an accepted taxon WoRMS also returns attributes recorded on its synonyms whatever includeInherited is set to, marked by inheritedFrom. A notice names the linked accepted ID, distinguishing an accepted alternative representation from its preferred ID. Missing traits do not prove biological absence; IUCN list membership is not a threat category.

NameTypeReqDescription
aphiaId–yesPositive safe-integer AphiaID, decimal string, or canonical urn:lsid:marinespecies.org:taxname:<AphiaID>; outputs remain numeric.
includeInheritedboolean–Include attributes inherited from higher taxa; default true.
measurementTypestring–Case-insensitive whole-value measurement type, not trimmed, e.g. Body size; blank means no filter. Names come from worms_list_reference with topic: trait_types.
resultOffsetinteger–Zero-based local position; resubmit unchanged selectors and options.
NameTypeReqDescription
aphiaIdinteger–Positive safe-integer AphiaID; obtain from worms_resolve_taxon.
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
echoobject–Effective options.
errorobject–Present when the call failed. Absent on success.
nextResultOffset––Next local position; null when consumed.
noticestring–Linked accepted/preferred-AphiaID and absent-attribute guidance, in that order.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
returnedCountinteger–Whole scientific items returned on this segment.
statusErrorobject–Failed taxonomic-status read; evidence is unaffected, but whether the AphiaID is its accepted name is unknown.
totalCountinteger–Known local sequence length before pagination.
traitsarray–This preorder segment; indices refer to the complete original tree.
unfilteredCountinteger–Nodes in the complete tree before the measurementType filter.

No examples provided.

worms_list_reference ~185

List supported external identifier systems, a non-exhaustive taxonomic-status guide grouped as accepted, unaccepted, uncertain, or technical, environment-flag semantics, observed worms_get_distributions filter values, live taxonomic ranks, or live trait definitions. Resume nextResultOffset as resultOffset with the same topic. Identifier codes, statuses, environment flags, and distribution terms are available offline. A record status can be the specific reason itself, such as junior subjective synonym, rather than unaccepted. IUCN identifiers are not threat categories; null flags mean not recorded. Trait definitions retain complete-tree preorder indices across pages; parents may be on earlier pages.

NameTypeReqDescription
resultOffsetinteger–Zero-based local position; resubmit unchanged selectors and options.
topicstringyesReference topic: external_id_types, statuses, environment_flags, distribution_terms, ranks, or trait_types.
NameTypeReqDescription
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
entriesarray–Whole reference entries in this segment with topic-specific fields.
errorobject–Present when the call failed. Absent on success.
nextResultOffset––Next local position; null when consumed.
noticestring–Guidance for empty live references.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
returnedCountinteger–Whole scientific items returned on this segment.
topicstring–Requested reference topic.
totalCountinteger–Known local sequence length before pagination.

No examples provided.

worms_resolve_taxon ~427

Resolve exact or explicitly fuzzy scientific names, or search one vernacular name as a whole recorded common name or, with vernacularMatch: "contains", as part of one. Names default to marine-or-brackish and extant taxa; vernacular cannot filter. Resume scientific segments with nextInputOffset and nextMatchOffset against unchanged names and options; inputIndex preserves duplicates and partialGroup identifies split groups. For vernacular, consume nextResultOffset within the same upstream offset before advancing page.nextOffset and resetting resultOffset to zero. Full 50-match upstream groups remain completeness-unknown; accepted-name fields do not choose an ambiguous match.

NameTypeReqDescription
extantOnlyboolean–Filter scientific names to extant taxa; vernacular cannot filter and rejects false.
fuzzyboolean–Explicit fuzzy scientific-name matching; unavailable for vernacular.
inputOffsetinteger–Zero-based original scientific names position; inactive for vernacular.
marineOnlyboolean–Filter scientific names to taxa WoRMS flags marine or brackish; false also admits freshwater-only and terrestrial taxa. Vernacular cannot filter and rejects false.
matchOffsetinteger–Zero-based match within the scientific-name group at inputOffset; inactive for vernacular.
namesarray–Nonempty original scientific-name list, with no total-input ceiling; at most 50 positions fetched per call. Resubmit unchanged with continuation offsets, preserving duplicates.
offsetinteger–Vernacular only: one-based upstream starting record, advancing by 50; default 1. Scientific names accept only 1.
resultOffsetinteger–Zero-based match within the fetched vernacular page; keep upstream offset until consumed. Inactive for scientific names.
vernacularstring–Common name, mutually exclusive with names; blank means unset.
vernacularMatchstring–Vernacular only: exact matches a whole recorded common name; contains matches every recorded common name containing the text, such as grouper in Nassau grouper. Names accept only exact; blank means e…
NameTypeReqDescription
attributionobject–WoRMS source attribution.
budgetLimitedboolean–Whether the byte budget ended this local page early.
byteBudgetnumber–Complete serialized response byte target.
deferredCountinteger–Original input positions not fully consumed.
echoobject–Effective matching options.
errorobject–Present when the call failed. Absent on success.
modestring–Matching mode.
nextInputOffset––Next original names position; resubmit unchanged names and options.
nextMatchOffset––Next match position at nextInputOffset; null when names consumed.
nextResultOffset––Next local position; null when consumed.
noticestring–Empty vernacular-page guidance, or the inputIndex of each returned 50-match scientific-name group, whose completeness is unknown, with the change that narrows it.
oversizedItemboolean–One indivisible scientific item exceeds the target; retained intact with forward progress.
pageobject–Vernacular page only.
requiredBytesinteger–Serialized paired-surface result bytes for an oversized item, excluding transport-added metadata.
resultOffsetinteger–Zero-based starting position in the complete local sequence.
resultsarray–One result per processed input.
returnedCountinteger–Whole scientific items returned on this segment.
totalCountinteger–Known local sequence length before pagination.

No examples provided.

Install

How do I install the io.github.cyanheads/worms-marine-taxa-mcp-server server?

io.github.cyanheads/worms-marine-taxa-mcp-server is a hosted endpoint at https://worms-marine-taxa.caseyjhand.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · worms-marine-taxa.caseyjhand.com

# add to Claude Code
claude mcp add --transport http cyanheads-worms-marine-taxa-mcp-server 'https://worms-marine-taxa.caseyjhand.com/mcp'
Common questions

What is the io.github.cyanheads/worms-marine-taxa-mcp-server server?

io.github.cyanheads/worms-marine-taxa-mcp-server is listed in the public MCP registry as io.github.cyanheads/worms-marine-taxa-mcp-server. Resolve WoRMS marine species names; fetch classifications, synonyms, distributions, traits, and IDs. This page covers its hosted endpoint (https://worms-marine-taxa.caseyjhand.com/mcp).

Is the io.github.cyanheads/worms-marine-taxa-mcp-server server safe to use?

io.github.cyanheads/worms-marine-taxa-mcp-server scores 80 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the io.github.cyanheads/worms-marine-taxa-mcp-server server expose?

io.github.cyanheads/worms-marine-taxa-mcp-server exposes 8 tools: worms_list_reference, worms_resolve_taxon, worms_get_taxon, worms_get_classification, worms_get_synonyms, and 3 more. Their descriptions and schemas cost roughly 2,401 tokens of context every time the server is loaded.

Does the io.github.cyanheads/worms-marine-taxa-mcp-server server require authentication?

No. We connected to io.github.cyanheads/worms-marine-taxa-mcp-server without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the io.github.cyanheads/worms-marine-taxa-mcp-server server still maintained?

io.github.cyanheads/worms-marine-taxa-mcp-server is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

What did VerifyMCP test on the io.github.cyanheads/worms-marine-taxa-mcp-server server?

VerifyMCP ran 13 checks on io.github.cyanheads/worms-marine-taxa-mcp-server, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.