otherapi_key

Dictionary Api

The Merriam-Webster Dictionary API provides developers with access to comprehensive dictionary and thesaurus content, including definitions, etymologies, audio pronunciations, synonyms, and antonyms.

Verdict

Dictionary Api gives your team instant access to word definitions, pronunciations, etymologies, and usage examples without leaving the conversation. When someone @mentions it with a word, it returns comprehensive lexical data — part of speech, multiple definitions, phonetic transcriptions, and origin notes. Writers refining copy, support teams clarifying terminology, and educators building glossaries get the most value. The single tool covers most dictionary lookups, though it won't handle slang, brand names, or highly technical jargon that mainstream dictionaries skip.

Common use cases

  • Clarify technical terms during client calls
  • Verify spelling and usage in draft emails
  • Build glossaries for onboarding documentation
  • Settle word-choice debates in real time
  • Teach vocabulary in tutoring sessions

Integration

Vendor
Dictionary Api
Category
other
Auth
API_KEY
Tools
1
Composio slug
dictionary_api

Tools

  • Get Word Definition V2

    Tool to retrieve definitions, phonetics, origin, and meanings of a given word using freedictionaryapi v2. use when you need comprehensive lexical data for a specific word.

Setup

Setup guide

  1. 11. Open your Switchy workspace and navigate to Settings > Integrations. 2. Find Dictionary Api in the MCP directory and click Connect. 3. You'll be prompted to enter an API key — get yours from the Dictionary Api dashboard at dictionaryapi.dev (free tier works for most teams). 4. Paste the key into Switchy and click Save. 5. To test, open any Space and type '@Dictionary Api define serendipity' — you should see definitions, phonetics, and etymology appear in seconds. 6. If the response is empty, double-check the key hasn't expired and that you're querying common English words the API recognizes.

What teammates see: by default, memories from Dictionary Api are scoped to the Space (PROJECT visibility) - you can mark any memory PRIVATE or share it ORG-wide.

Works well with

Top models

Compatibility data appears once enough Spaces have used this MCP together with a given model.

How Switchy teams use it

Not enough Spaces yet to publish anonymised usage stats (we require ≥ 50 Spaces per week).

Starter prompts

Define Ambiguous Term

@Dictionary Api define 'sanction' — I need all definitions and example sentences to clarify how we're using it in the contract.
Open in a Space →

Check Pronunciation

@Dictionary Api what's the pronunciation and origin of 'epitome'? We keep saying it wrong in demos.
Open in a Space →

Explore Word Origins

@Dictionary Api where does 'algorithm' come from? We're naming a new feature and want the backstory.
Open in a Space →

Verify Spelling Variants

@Dictionary Api is 'grey' or 'gray' correct for US English? I need the definition and any usage notes.
Open in a Space →

Expand Vocabulary List

@Dictionary Api define 'resilience' with all meanings and parts of speech — we're adding it to our values glossary.
Open in a Space →

Example outputs

Illustrative - representative of the model's voice and quality, not literal recordings.

Prompt

@Dictionary Api what does 'ephemeral' mean and how is it pronounced?

Output

The word 'ephemeral' (pronounced /ɪˈfɛm.ər.əl/) means lasting for a very short time. It originates from Greek 'ephēmeros' meaning 'lasting only a day.' As an adjective, it describes things that are transitory or fleeting — like ephemeral art installations or ephemeral streams that only flow after rain. Synonyms include temporary, short-lived, and transient.

Notes

This example shows the MCP's core lookup capability: definitions, pronunciation guides, etymology, and usage context in one query. Requires an API key from freedictionaryapi.com. The service covers English words but won't handle specialized jargon or neologisms not yet in standard dictionaries.

Prompt

@Dictionary Api I need the etymology and all meanings of 'sanction' — it seems to have contradictory definitions.

Output

You're right — 'sanction' has dual meanings. As a noun, it means (1) official permission or approval ('received sanction from the board') and (2) a penalty imposed for disobedience ('economic sanctions against the regime'). Both stem from Latin 'sanctio' meaning 'decree.' As a verb, it means to give official approval. This contradiction arose because the root concept is 'official decree' — which can authorize or punish.

Notes

Demonstrates how the MCP surfaces multiple definitions and resolves apparent contradictions through etymology. Useful when teammates debate word usage in documentation or marketing copy. The API returns structured data (parts of speech, definitions, origins) that the AI synthesizes into coherent explanations.

Prompt

@Dictionary Api compare 'affect' and 'effect' with examples so I can finally remember the difference.

Output

**Affect** (verb): to influence or produce a change. Example: 'The weather affects my mood.' Rarely used as a noun (means emotional expression in psychology). **Effect** (noun): a result or consequence. Example: 'The new policy had a positive effect.' Can be a verb meaning 'to bring about': 'She effected major reforms.' Memory trick: **A**ffect is an **A**ction (verb), **E**ffect is the **E**nd result (noun).

Notes

Shows the MCP handling comparative queries where the AI combines lookup data with pedagogical framing. The MCP retrieves raw definitions and examples; the AI structures them for clarity. Works best for commonly confused word pairs. Won't replace a style guide for domain-specific terminology, but solves 80% of everyday usage questions.

Use-case deep-dives

Content team copy review

When a single-tool MCP beats browser tabs for word checks

A 3-person content team reviewing blog drafts in Switchy can wire this MCP to check word definitions without leaving the workspace. The single tool returns phonetics, origin, and meanings in one call—faster than toggling between Google and Merriam-Webster. This works when your team writes 5-10 pieces a week and needs quick lexical confirmation during editing sessions. If you're writing technical docs with domain-specific jargon, this free dictionary won't cover specialized terms; you'd need a vertical glossary instead. For general editorial work where speed matters more than exhaustive etymology, the API_KEY setup takes two minutes and the tool stays in your chat context. Worth adding if your team already uses Switchy for draft review and you're tired of context-switching to verify word usage.

ESL support team onboarding

Inline word lookup for non-native English speakers

A customer support team with ESL agents can use this MCP to clarify English word meanings during ticket responses without breaking flow. The tool pulls definitions and phonetics in real time, so an agent unsure about "deprecate" or "granular" gets an answer in the same Switchy thread where they're drafting the reply. This is most useful for teams under 10 people where shared vocabulary questions come up 3-5 times per shift. If your team is larger or handles highly technical products, you'll want a glossary MCP with custom term definitions instead. The single-tool constraint means you can't batch-check multiple words at once, so this fits conversational lookup better than bulk proofreading. Add it if your team's English fluency varies and you want to reduce Slack interruptions for word questions.

Copywriter ideation sessions

When etymology and phonetics inform creative naming

A solo copywriter or 2-person brand team brainstorming product names in Switchy can use this MCP to pull word origins and phonetic breakdowns during live sessions. The tool's etymology field helps surface Latin or Greek roots that inform naming direction—useful when you're exploring "veri-" prefixes or "-ify" suffixes for a SaaS rebrand. This works for early-stage ideation where you're checking 10-15 words per session, not for trademark vetting or linguistic research at scale. If you need synonyms, antonyms, or usage frequency, this MCP won't help; it's definition-only. The API_KEY auth means no OAuth friction, so you can spin it up in a single Switchy workspace and archive it when the naming project wraps. Best for creative teams who want lexical depth without opening a dozen browser tabs during a 30-minute brainstorm.

Frequently asked

What does the Dictionary API MCP do in Switchy?

It lets your AI agents look up word definitions, pronunciations, etymologies, and usage examples on demand. When an agent encounters an unfamiliar term or needs to clarify meaning during a conversation, it queries the freedictionaryapi v2 directly. Useful for writing tasks, language learning workflows, or any context where precise word choice matters.

Do I need an API key to use Dictionary API MCP?

Yes. You'll need to generate an API key from Dictionary API's service and paste it into Switchy's connection settings. The key authenticates each lookup request. If your team shares the Switchy workspace, only the person who connects the MCP needs to provide the key — everyone else inherits access through the shared integration.

Can it translate words or provide synonyms?

No. The MCP returns definitions, phonetics, word origins, and part-of-speech labels for English words only. It doesn't translate between languages or generate synonym lists. If you need synonyms, use a thesaurus API or a general-purpose LLM prompt. For translation, connect a dedicated translation MCP or service.

Why use this instead of asking the LLM for definitions?

LLMs hallucinate definitions and etymologies, especially for technical jargon or rare words. The Dictionary API MCP pulls from a curated lexical database, so you get accurate phonetics and verified usage notes. It's faster and more reliable when precision matters — legal documents, academic writing, or customer-facing content where a wrong definition creates liability.

Does each dictionary lookup count against my Switchy plan limits?

Dictionary lookups count as tool calls, which consume tokens in your plan's usage bucket. A single definition request typically uses 200–500 tokens depending on how detailed the entry is. If your team runs hundreds of lookups per day, monitor your usage dashboard. Most writing workflows stay well under plan limits unless you're building a dictionary product.

Data last verified 607 hours ago.Sources aggregated hourly to weekly. See docs/architecture/model-directory.md.