> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nikiwa.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

> Key terms used across the Nikiwa app, API, and MCP server.

<ResponseField name="Tool" type="deterministic endpoint">
  A single, deterministic unit of analysis such as `get_wallet_portfolio_breakdown`. It takes exact inputs and returns a structured data object. Tools do not interpret or synthesize; the app, your code, or your assistant reasons over their output.
</ResponseField>

<ResponseField name="Module" type="UI block">
  An interactive block (table, chart, canvas, or stat block) the app renders inside a chat answer from a tool's structured result. See [Modules](/product/modules).
</ResponseField>

<ResponseField name="Citation" type="source link">
  A pointer from a claim in an answer to the data source that supports it.
</ResponseField>

<ResponseField name="Canonical network name" type="string">
  The normalized chain name Nikiwa maps every alias to (for example, `eth` becomes `ethereum`) before routing to a data provider. See [Supported Networks](/essentials/supported-networks).
</ResponseField>

<ResponseField name="Developer key" type="nkw_live_ token">
  A personal API key you create in the app to authenticate to the MCP server. Labeled "MCP Keys" in the app. The Tools API uses a separate `api:call` scope. See [API keys](/mcp/api-keys).
</ResponseField>

<ResponseField name="Tools API" type="REST">
  The public REST surface that exposes a curated subset of Nikiwa tools for discovery and execution. See the [API Reference](/api-reference/overview).
</ResponseField>

<ResponseField name="MCP server" type="Streamable HTTP">
  Nikiwa's Model Context Protocol server, which exposes the full tool set to MCP clients such as Claude and ChatGPT. See [MCP overview](/mcp/overview).
</ResponseField>

<ResponseField name="Unit" type="number">
  The metering count charged per tool call, aggregated per key. See [Usage & metering](/mcp/usage).
</ResponseField>

<ResponseField name="Resolution" type="symbol or ENS to address">
  Turning a token symbol or ENS name into a concrete contract or wallet address before analysis, via `resolve_token_symbol` and `resolve_ens`.
</ResponseField>