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

# Agent Categories

> Live registry categories with agent counts (markdown)


`plungeai://agents/categories` · `text/markdown` · `static`

Active agents (up to 500) grouped by category into one table, largest first. An agent with no
category counts as `general`:

```
# Agent Categories (<n> agents, live registry)

| Category | Agents |
|:---|---:|
| google-workspace | … |
…

_Read `plungeai://agents/{category}` for the agents in one category._
```

This is the cheap way to answer "what kinds of agents are there". On 2026-09-24 the registry held
92 active agents in 14 categories (live-verified): `google-workspace`, `tools`, `search`,
`microsoft-365`, `ai`, `blockchain`, `communication`, `ecommerce-agents`, `payment`,
`entertainment`, `media`, `financials`, `shopping`, `coding-agents`. Note the finance category is
`financials`, not `finance`.

```bash
# verify
# expect: Agent Categories
# expect: | Category | Agents |
curl -s https://mcp.plungeai.com/v1 \
  -H "Authorization: Bearer $PLUNGE_API_KEY" \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":7,"method":"resources/read","params":{"uri":"plungeai://agents/categories"}}'
```

## Result shape

`resources/read` answers one entry:

```json
{
  "contents": [
    {
      "uri": "plungeai://agents/categories",
      "mimeType": "text/markdown",
      "text": "…"
    }
  ]
}
```

## Errors

`resources/read` answers JSON-RPC errors, not outcomes; the SDK prefixes each message with `MCP error <code>:` ([resources/read](/mcp-reference/protocol/resources-read)).

- `-32603` `Registry error <status>`: the registry answered with a non-2xx status.
- `-32002` `Resource not found: <uri>`: the URI matches no resource or template.