List the SSH keys stored on your account, with their ids and SHA256 fingerprints. Use this to check whether a key is already stored and to get the ids to pass to orderVps or buildVpsInstance. Requires authentication.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionKey | No | Session key (osk_...) returned by checkDeviceLoginStatus. Pass it on every call when logged in via the in-chat device flow; omit when connected via OAuth. |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the behavioral burden. It discloses the account scope, the returned information (ids and SHA256 fingerprints), and the authentication requirement. For a simple read-only listing tool, this provides adequate transparency without needing to state the absence of side effects explicitly.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences with no filler: purpose is front-loaded, usage guidance follows, and the authentication constraint is stated last. Every sentence earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple, has one optional parameter, and no output schema, and the description covers the resource, purpose, output details, and authentication. It does not describe error cases or empty results, but those are minor for a listing operation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% coverage for the only parameter, sessionKey, fully explaining its format and usage. The description adds no parameter-specific semantics beyond the schema, so the baseline of 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description names a specific verb ('List'), a specific resource ('SSH keys stored on your account'), and the key output (ids and SHA256 fingerprints). It is clearly distinguishable from sibling tools like addSshKey and deleteSshKey, which perform different operations.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It explicitly states when to use the tool: to check whether a key is already stored and to get ids for orderVps or buildVpsInstance. It does not discuss when not to use it or mention alternatives, but the listing operation is unique among siblings, so the guidance is sufficient.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
The set has several near-duplicate or heavily overlapping tools: initiateTransfer and transferDomain appear to do the same thing, and generateDomainSuggestions, bulkDomainSuggestions, suggestAlternatives, spinDomainWords, and addPrefix/addSuffixToDomain all occupy suggestion space. Account/profile tools like getAccountSummary, getMyProfile, getRecentActivity, and getMyAuditLogs also blur together.
Many tools follow verb_noun camelCase (createDnsRecord, listInvoices, updateContact), but the broader set mixes styles: osirAppCreateUpload vs osirAppList vs osirAppStatus, plus inconsistent verbs like check/verify/validate/preview for similar lookup actions. The naming is readable but not predictable across the full surface.
105 tools is an extreme count for any single MCP server, even one spanning domain registration, DNS, VPS, email, billing, app deployment, and site publishing. The surface would be far more coherent split into focused servers by domain.
Core domain, DNS, billing, VPS, mail, and app deployment workflows are broadly covered. However, there are notable gaps: no way to update or reassign the contacts on an existing domain, no update operation for host/glue records, and no VPS power operations like reboot or stop outside the external control panel.