Four steps for those who work in the terminal. DeepSeek Harness (the command dsh) is DeepSeek’s open agent environment, where everything is organized through plugins. It connects MCP servers as a client, with an entry in the profile file. There is no sign-in window here; access is passed using a personal token.
The instructions were tested on version dsh 0.1.0-rc.7, and the screenshots were taken in its web interface.
| What is required | Address (URL) |
|---|---|
| All paid databases, including the districts | https://mcp.casus.legal/one/mcp |
A subscription or trial period for the required database and a personal token of the form vasrf_conn_… from the dashboard.
One-command installation: npm i -g @deepseek-ai/dsh. The profile web is created automatically on the first launch dsh web.
The DeepSeek model key is needed only for the agent’s responses; the connector itself connects independently of it.
Open account, the tab “Connectors”, block “Other environments” and click “Issue token”. The token is displayed once.
Keep it in an environment variable rather than in the configuration text, because profile files can easily end up in backups and repositories.
The token remains valid while the subscription is active and opens all paid databases. It does not disrupt already configured Claude and ChatGPT it does not break it.
User profile changes are stored in the file cordis.patch.yml in the profile directory. For a web profile this is ~/.dsh/profiles/web/cordis.patch.yml. The adjacent cordis.yml — this is the profile root; it must not be edited, as stated in the file itself.
A new entry is added via insert. This is the key point. A patch without insert is treated as a change to an existing entry, and dsh will silently skip it with a warning patch: entry … not found.
~/.dsh/profiles/web/cordis.patch.yml
The connection address is https://mcp.casus.legal/one/mcp. This is a single address: it provides access to all databases covered by your subscription, and it automatically selects the appropriate AI model based on the subject of the question. If you need a connector for a single database, separate addresses are also available (IP Court — https://sip.casus.legal/mcp, KAS — https://kas.casus.legal/mcp, KUD — https://kud.casus.legal/mcp), but the address must then match the database covered by your subscription; otherwise, the server will respond “the subscription is inactive or has expired.” There is no need to keep both the single address and separate addresses at the same time: the AI model will see two identical sets of tools and search twice. The complete table of addresses is below, under the steps.
In serverName Latin letters, digits, hyphens and underscores are allowed, up to 32 characters, and the value must be unique among connected servers. Tool names are generated from it mcp__casuslegal__….
If you need several databases, add one block for each to the same list, changing id, serverName and the address from the table below. The token is the same in all blocks.
A separate command prints the assembled profile configuration. It does not start the environment:
At the end of the output, your entry should appear with a source marker # == ~/.dsh/profiles/web/cordis.patch.yml. If a warning was printed instead patch: entry … not found, this means that insert from step 2 was lost.
Start the environment: dsh web — it will start a local web interface and print its address.
Open Settings → Plugins: this page lists the plugins in the installed build.
Go to the tab Plugin list and enter in the search field mcp. The entry mcp-client in the status Enabled means that the client is mounted and connecting to our server.
Next, ask the agent a substantive question, for example: “Find Supreme Court of the Russian Federation case law on reducing a penalty under Article 333 of the Civil Code of the Russian Federation.” The connector’s tools will be provided to the model under the names mcp__casuslegal__….
| Database | serverName | Address (URL) |
|---|---|---|
| All subscribed databases at once | casuslegal | https://mcp.casus.legal/one/mcp |
| Commercial cassation districts (all) | casuslegal_okruga | https://mcp.casus.legal/okrug/mcp |
| Higher courts: Constitutional Court · Supreme Court · Supreme Commercial Court | casuslegal | https://mcp.casus.legal/mcp |
| Intellectual Property Court (IP Court) | casuslegal_sip | https://sip.casus.legal/mcp |
| Administrative cases (KAS · Judicial Chamber for Administrative Cases of the Supreme Court of the Russian Federation) | casuslegal_kas | https://kas.casus.legal/mcp |
| Criminal cases (KUD · Judicial Chamber for Criminal Cases of the Supreme Court of the Russian Federation) | casuslegal_kud | https://kud.casus.legal/mcp |
| Field | Purpose |
|---|---|
| toolCallTimeoutMs | Timeout for a single tool call. The default is 60 000 ms; for corpus searches, set it to 180 000. |
| failOnStartupError | With the value true the build will not start if the connector is unavailable. This is useful for avoiding unknowingly working “without case law.” |
| reconnect.enabled | Automatic reconnection after a connection loss. Enabled by default. |
The patch is missing insert. Without it, the entry is treated as a change to an existing plugin with that id, and dsh it is skipped. The connector simply does not appear, without an explicit error.
Check the block from step 2 and repeat dsh --profile web --dump-config.
The client activates even when the connection fails; this is intentional: the build must not fail because a server is unavailable. Check that the variable CASUSLEGAL_TOKEN is visible to the process, meaning that it has been exported in the same shell from which dsh.
To make such cases immediately visible, set in the configuration failOnStartupError: true.
Only streamable-http. Our address works over Streamable HTTP; with the value sse or stdio the connection cannot be established.
A single corpus search takes about 30 seconds, and a complex question triggers several searches in succession. The standard 60 000 ms is insufficient; set toolCallTimeoutMs: 180000.
Open the “Connectors” tab in your account and check the subscription period for the required database. Each corpus is billed separately; “Higher Courts” is included in every plan.
It is not shown again. Issue a new one in the account and replace the environment variable’s value; existing connections will not be disconnected.
