wordnet-mcp-server

Provides a local Model Context Protocol (MCP) server exposing WordNet-based lexical lookup functions such as synonyms, antonyms, hypernyms/hyponyms, and word definitions/examples.

Evaluated Apr 04, 2026 (17d ago)
Homepage ↗ Repo ↗ Ai Ml mcp wordnet nlp lexical-lookup synonyms antonyms thesaurus
⚙ Agent Friendliness
43
/ 100
Can an agent use this?
🔒 Security
22
/ 100
Is it safe for agents?
⚡ Reliability
20
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
45
Documentation
55
Error Messages
0
Auth Simplicity
100
Rate Limits
0

🔒 Security

TLS Enforcement
0
Auth Strength
10
Scope Granularity
0
Dep. Hygiene
40
Secret Handling
70

Runs as a local stdio MCP server per README; no auth is documented. TLS/authn are not applicable to stdio local usage, but this also means there is no documented protection against unauthorized local access. Dependencies include mcp[cli] and nltk; no vulnerability or pinning details were provided, so dependency hygiene is uncertain.

⚡ Reliability

Uptime/SLA
0
Version Stability
40
Breaking Changes
20
Error Recovery
20
AF Security Reliability

Best When

Used as a local MCP stdio server integrated with an MCP-capable client for interactive vocabulary/semantic lookups.

Avoid When

Avoid when you need a secure, authenticated remote service with fine-grained permissions, or when you cannot tolerate uncertainty around error handling, retries, and performance since these details are not documented in the provided materials.

Use Cases

  • Tool-augmented lexicon/word-expansion for LLMs via MCP
  • Generating synonym/antonym suggestions for writing or editing assistants
  • Exploring semantic hierarchies (hypernyms/hyponyms) for educational or NLP workflows
  • Providing WordNet definitions and example sentences as grounded references

Not For

  • Production SaaS deployment requiring hosted, managed API endpoints
  • Use cases needing authenticated multi-tenant access control
  • High-throughput querying at scale without performance tuning/benchmarking
  • Applications requiring non-English or domain-specific terminology beyond what WordNet covers

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

OAuth: No Scopes: No

No authentication method is described in the provided README/snippet; it is configured as a local stdio MCP server, so access control is effectively delegated to the host environment.

Pricing

Free tier: No
Requires CC: No

PyPI package; pricing for hosted usage is not applicable/mentioned since it appears to run locally.

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • No explicit MCP tool schema/examples for tool input/output formats are included in the provided README, so agents may need to infer parameters from MCP definitions (not provided here).
  • No documented rate limits or backoff guidance is provided.

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Scores are editorial opinions as of 2026-04-04.

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