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

# Herd

> Give the Sazabi agent tools to research contracts, wallets, transactions, and on-chain workflows through Herd.

[All Herd integration capabilities](https://docs.sazabi.com/catalogs/integrations/herd)

## About

Herd is an MCP connector that gives the Sazabi agent tools to research crypto contracts, wallets, and transactions. Herd hosts an MCP server at `https://mcp.herd.eco/v1` that authenticates via OAuth, so Herd controls access using your account permissions. Write operations are governed by the per-connection read-only toggle.

**What the agent can do:**

* Inspect contract metadata, source, deployments, and roles
* Decode transactions and review wallet activity
* Analyze wallet balances, tokens, and deployments
* Build, search, and simulate Herd HAL actions

## Prerequisites

* An active Herd account
* Permission to authorize third-party OAuth applications in Herd

## Set up in the dashboard

Configure connectors in the dashboard under [**Settings > MCP connectors**](https://app.sazabi.com/settings/mcp-connectors).

**Step 1**

### Open the connector

Find Herd in [**Settings > MCP connectors**](https://app.sazabi.com/settings/mcp-connectors).

**Step 2**

### Authorize

Start the connection; Sazabi redirects you to Herd to authorize, then back.

## Set up with the CLI

You can also connect Herd with the [Sazabi CLI](https://docs.sazabi.com/reference/cli.md) (installed and authenticated — see [`sazabi mcp-connectors` reference](https://docs.sazabi.com/reference/cli/mcp-connectors)).

Herd authenticates over OAuth, so the CLI opens a browser to complete authorization:

```bash theme={"system"}
sazabi mcp-connectors connect herd
```

Add `--read-only` to restrict the connector to read-only tools, or `--project-id <project>` to target a specific project. In `--json` mode the command prints an authorization URL to open, then polls until the connection completes. Confirm the result with `sazabi mcp-connectors list`.

## Verify

Open the connector's connection page under [**Settings > MCP connectors**](https://app.sazabi.com/settings/mcp-connectors) and confirm Sazabi lists the tools it discovered. Then, in a thread, ask the agent to use one of those tools (for example, decode a transaction) and confirm it runs. If no tools appear, confirm the connection is authorized.

## Troubleshooting

**No tools discovered** — Disconnect and reconnect from [**Settings > MCP connectors**](https://app.sazabi.com/settings/mcp-connectors) to restart the OAuth flow.

**Connection shows needs attention** — The authorization may have expired or been revoked; reconnect from [**Settings > MCP connectors**](https://app.sazabi.com/settings/mcp-connectors).

**Missing data or tools** — The connector uses your Herd permissions. If specific resources or actions are unavailable, ask a Herd administrator to review your access.

## Further reading

> [card] [Agent tools](https://docs.sazabi.com/guides/investigate/agent-tools.md)
>
> How the agent uses connector tools.

> [card] [MCP connectors](https://docs.sazabi.com/catalogs/mcp-connectors.md)
>
> Browse the connector catalog.


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