
OSIR MCP server
Which servers in the official MCP registry are OSIR's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.
read 2026-10-19
- Registry namecom.osir/domain-registrarverified in the MCP registry
The registry name sits under osir.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.
- Stateanswerschecked 2026-10-19
- Tools106
- Server calls itselfOSIR
- Server version2.4.2
- Protocol version2025-06-18
On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 279 ms.
- Whether its tools do the product's job has not been judged yet.
- Checked on 3 of the 7 days it takes to judge reliability.
Once connected
- Keep approval on for initiateTransfer, payInvoice, transferDomain: they delete, send or pay without saying so.
- addSshKey, cancelTransfer, createAccount, createContact, createDnsRecord change data without a sign-in: anyone with the address can call them.
- Its definitions take about 20482 tokens of context: enable only the tools a task needs.
Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.
- INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
- Answeredmeasuring3 of the 7 daily checks it takes to print a share
- Median first answer195 ms
- Space in an agent's context≈ 20,482 tokensthe definitions of all its tools (106), which an agent carries on every turn
- Tool definitionsA · 100 of 100
- Typed results11 of 106 toolsdeclared outputSchema: results come typed, read once
- Every tool passes all six checks.
What an agent can do with it
- not sure · search and register domains by asking an AI assistant
- not sure · edit DNS records and renew domains through a connector
- can do · transfer an existing domain from another registrar
Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?
Worth a look
- Tools that delete, send or pay without telling the client so: initiateTransfer, payInvoice, transferDomain
- Tools that change data, on a server that answers without a sign-in: addSshKey, cancelTransfer, createAccount, createContact, createDnsRecord
A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →
addPrefixToDomainaddPrefixToDomain: Generate domain suggestions by adding prefixes to a base name.
addSshKeyaddSshKey: Store an SSH public key on your account so it can be injected into VPS installs. Idempotent: storing a key you already have returns the existing one instead of creating a duplicate, so it is safe to call before every order…
addSuffixToDomainaddSuffixToDomain: Generate domain suggestions by adding suffixes to a base name.
buildVpsInstancebuildVpsInstance: Stage an operating system install (or reinstall) on a VPS instance. DESTRUCTIVE: ERASES ALL DATA on the server, including any deployed application, and cannot be undone. The install is asynchronous; afterwards poll…
bulkDomainSuggestionsbulkDomainSuggestions: Generate domain suggestions for 1-10 keywords across 1-6 TLDs (hard cap), grouped by originating keyword. Typical flow: call listCategorizedTlds first to pick 3-6 TLDs, then this tool. Per-suggestion availability…
cancelTransfercancelTransfer: Stage cancellation of a pending domain transfer. DESTRUCTIVE and irreversible once executed. Requires authentication. Returns an actionId; present the summary to the user, then call executeConfirmedAction with the actionId…
changeVpsPaymentTermchangeVpsPaymentTerm: Stage a change of the payment term (billing cycle) for a VPS instance. Affects what you are billed. Requires authentication. Returns an actionId; present the summary to the user, then call executeConfirmedAction with…
checkDeviceLoginStatuscheckDeviceLoginStatus: Poll for device login completion. Call this after loginWithDevice() once you have opened the verification URL and signed in. Required: deviceCode (the device_code returned by loginWithDevice). On success returns a…
checkDomainAvailabilitycheckDomainAvailability: Check if a domain name is available for registration, with price. No authentication required; anonymous callers get list pricing, authenticated callers get their account pricing. Required: domain (e.g…
checkHostAvailabilitycheckHostAvailability: Check if a host/glue record name is available for creation. Requires authentication. Returns whether the hostname is free; call before createHost.
checkKeywordAvailabilitycheckKeywordAvailability: Check keyword availability across all supported TLDs and registries with detailed per-domain results. Use checkKeywordAvailabilitySummary instead when you only need counts; it is faster.
checkKeywordAvailabilitySummarycheckKeywordAvailabilitySummary: Check keyword availability across TLDs and registries. Summary statistics only (no per-domain results), faster than checkKeywordAvailability.
countMyVpsInstancescountMyVpsInstances: Get the total count of VPS instances owned by the authenticated user. Requires authentication.
createAccountcreateAccount: Create a new OSIR customer account; step 1 of onboarding, no authentication required. The contact must be the PRINCIPAL's real ICANN registrant contact (the human or business the account is for), never the AI agent itself…
createContactcreateContact: Create a new contact for use with domain registrations. Requires authentication. Returns the created contact including its id for assignment to domains.
createDnsRecordcreateDnsRecord: Create a new DNS record for a domain. Requires authentication. For newly registered domains the zone is initialized automatically if missing. Returns the created record including its id for later updates or deletion.
createHostcreateHost: Create a new host/glue record, e.g. for custom nameservers like 'ns1.example.com'. Requires authentication. Check the name first with checkHostAvailability. Returns the created host record.
createMailboxcreateMailbox: Stage creation of a paid mailbox on a mail-enabled domain. BILLABLE: deducts from account balance; get a quote with getMailboxQuote and confirm the price with the user first. Requires authentication. Returns an actionId…
createPaymentSessioncreatePaymentSession: Stage a Stripe checkout session to add funds to the account balance. Requires authentication. Returns an actionId; present the summary to the user, then call executeConfirmedAction with the actionId if they approve…
deleteContactdeleteContact: Stage deletion of a contact. DESTRUCTIVE; fails if the contact is assigned to active domains. Requires authentication. Returns an actionId; present the summary to the user, then call executeConfirmedAction with the actionId…
deleteDnsRecorddeleteDnsRecord: Stage deletion of a DNS record. DESTRUCTIVE and irreversible once executed. Requires authentication. Returns an actionId; present the summary to the user, then call executeConfirmedAction with the actionId if they approve.
deleteHostdeleteHost: Stage deletion of a host/glue record. DESTRUCTIVE and irreversible once executed. Requires authentication. Returns an actionId; present the summary to the user, then call executeConfirmedAction with the actionId if they approve.
deleteMailboxdeleteMailbox: Stage deletion of a mailbox. The mailbox stops working immediately and its data is destroyed after a 14-day grace period. Requires authentication. Returns an actionId: present the summary to the user, then call…
deleteSshKeydeleteSshKey: Stage removal of an SSH key from your account. This does not affect servers already built with it, and the key can simply be added again. Requires authentication. Returns an actionId; present the summary to the user, then…
deleteVpsInstancedeleteVpsInstance: Stage deletion/cancellation of a VPS instance. DESTRUCTIVE and irreversible. Requires authentication. Returns an actionId: present the summary to the user, then call executeConfirmedAction with the actionId if they…
enableMailDomainenableMailDomain: Enable email hosting on a domain you own. Free; mailboxes are what cost money. If the call fails with a DNS conflict (an existing SPF or MX record), ask the user for explicit consent, then re-call with…
executeConfirmedActionexecuteConfirmedAction: Execute a previously staged destructive or financial action after user approval. The action expires after 5 minutes and can only be executed once.
fundBalanceWithSharedPaymentTokenfundBalanceWithSharedPaymentToken: Stage adding funds to the balance by charging a Stripe Shared Payment Token the customer granted to OSIR. Use when a purchase (registerDomain, renewDomain, transferDomain, orderVps) failed for…
generateDomainSuggestionsgenerateDomainSuggestions: Generate domain name suggestions based on keywords. This is the preferred suggestion tool for a single keyword; use it over suggestAlternatives. Returns suggested names with availability.
getAccountBalancegetAccountBalance: Get the current account balance for the authenticated user. Requires authentication.
getAccountSummarygetAccountSummary: Get a comprehensive summary of the user's account: profile, balance, domain count, VPS count, and pending transfers. Requires authentication.
getAuthStatusgetAuthStatus: Check whether the current session is authenticated. Returns authenticated status and token expiry. Optional: sessionKey (from checkDeviceLoginStatus).
getContactgetContact: Get detailed information about a specific contact. Requires authentication. Get the contactId from listContacts. Returns name, email, phone, organization, and address.
getContactsForDomaingetContactsForDomain: Get all contacts (registrant, admin, tech, billing) assigned to a domain. Requires authentication. Returns the contact assigned to each role.
getDedicatedServerCataloggetDedicatedServerCatalog: Get all available dedicated server configurations with pricing and specifications. No authentication required.
getDnsRecordgetDnsRecord: Get details of a specific DNS record by id. Requires authentication. Get the recordId from listDnsRecords. Returns the record's name, type, content, TTL, and priority.
getDomainAuditTrailgetDomainAuditTrail: Get the audit trail (history of all changes) for a specific domain. Requires authentication.
getDomainExtensionsgetDomainExtensions: Get all available domain extensions (TLDs) with pricing information. No authentication required.
getDomainInfogetDomainInfo: Get registry (EPP) state plus account settings for one domain: status, nameservers, lock state, auto-renew, privacy, creation/expiry dates, premium/expired/redemption info. Dates are null while a registration is still…
getDomainPricinggetDomainPricing: Get pricing for domain extensions from the product catalog. Requires authentication.
getHostingBundlegetHostingBundle: Get the hosting options and exact prices for a specific domain: recommended VPS packages (cheapest first), email plans, web forwarding, and app/site deployment. No authentication required. Call this ONCE after a…
getHostsForDomaingetHostsForDomain: List all host/glue records associated with a domain. Requires authentication. Returns each host name and its IP addresses.
getInvoiceDetailsgetInvoiceDetails: Get detailed information about a specific invoice including line items. Requires authentication.
getInvoiceStatisticsgetInvoiceStatistics: Get summary statistics of invoices: total paid, pending, overdue amounts. Requires authentication.
getMailDnsRecordsgetMailDnsRecords: Get the DNS records a mail domain needs (MX, SPF, DKIM, ...), for customers managing DNS externally. Requires authentication.
getMailboxQuotegetMailboxQuote: Get a display-only price quote for a mailbox plan. The backend re-derives the authoritative price at purchase. Requires authentication.
getMailboxUsagegetMailboxUsage: Get disk usage per mailbox in bytes, for quota display alongside the plan's quotaBytes. Requires authentication.
getMyAuditLogsgetMyAuditLogs: Get recent audit logs for the authenticated user across all services. Requires authentication.
getMyProfilegetMyProfile: Get the authenticated user's profile and account information including name, email, organization, balance, and domain/VPS counts. Requires authentication.
getPaymentTransactionsgetPaymentTransactions: Get payment transaction history for the authenticated user. Requires authentication.
getProductCataloggetProductCatalog: Get the complete product catalog including domain extensions, VPS packages, and dedicated servers. No authentication required.
getRecentActivitygetRecentActivity: Get the most recent activity across all domains and services for the user. Requires authentication.
getTransferQuotegetTransferQuote: Get a transfer price quote for a domain. Requires authentication. Returns transfer price, currency, extension years, and new expiration date. Call before initiateTransfer to show the user the cost.
getTransferStatusgetTransferStatus: Check the current status of a domain transfer. Requires authentication. Returns status, request date, current registrar, and expected completion.
getVpsInstanceDetailsgetVpsInstanceDetails: Get detailed information about a specific VPS instance including resource usage. Requires authentication.
getVpsPackageDetailsgetVpsPackageDetails: Get detailed information about a specific VPS package including all pricing tiers. Requires authentication. For anonymous browsing use listVpsPackages, which already includes per-term pricing.
initializeDnsZoneinitializeDnsZone: Initialize (create) the DNS zone for a domain. NOT needed after registerDomain, which initializes the zone automatically. Use only for pre-existing domains without a zone (e.g. after a transfer, or if registration opted…
initiateTransferinitiateTransfer: Starts a transfer for a domain already prepared at the losing registrar (unlocked, auth code in hand). transferDomain (domain tools) stages transfer + registrant assignment in one step; use that when the user gives you…
listCategorizedTldslistCategorizedTlds: List TLDs from the OSIR catalog that have category and audience metadata, with registration and renewal prices as decimal strings (e.g. '10.39'). Use it to pick 3-6 relevant TLDs before calling bulkDomainSuggestions…
listContactslistContacts: List all contacts for the authenticated user, optionally filtered by a search term. Requires authentication. Returns each contact with its id for use in getContact, updateContact, deleteContact, or domain registration.
The first 60 of 106, as the server listed them.
How to connect
Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:
{
"mcpServers": {
"domain-registrar": {
"type": "http",
"url": "https://be.osir.com/mcp/http"
}
}
}Add it
Claude Code, in a terminal
claude mcp add --transport http osir https://be.osir.com/mcp/httpclaude.ai, ChatGPT and other clients: add https://be.osir.com/mcp/http as a custom connector in the settings.
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
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