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Developer ToolsData access / search
- Passed: Handshake
- Passed: Tools listed
- Passed: Updated recently
Median latency 66 ms · Last checked
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Evidence for your next connection.
Independent measurements of remote MCP servers. Every observation has a timestamp.
Read-only probesMCP server · Data access / search
Health and token cost of every remote MCP registry server, probed daily. Look up, search, or probe.
0 failed · 7 not measured
Median of successful probes over 7 days
Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.
Tool definitions returned by this server
Independent monitoring
Responded
The server completed its last measured handshake. This is an observation, not a guarantee.
Last checked| Test area | Passed | Failed | Unmeasured |
|---|---|---|---|
ConnectionCan a client connect and discover tools? | 5 | 0 | 0 |
Reliability & speedDoes it respond consistently and quickly? | 1 | 0 | 3 |
Access & authenticationWhat is required to use this server? | 1 | 0 | 2 |
Tool qualityAre the tool definitions usable by an agent? | 4 | 0 | 0 |
Publisher identityCan the publisher be traced to its source? | 4 | 0 | 2 |
Unmeasured means there is not enough evidence to decide. How these checks work
Start using mcpcost
Choose your client, copy the configuration, then enable the server in your client’s MCP settings.
Run this command in your terminal, then restart Claude Code.
Claude Code
claude mcp add --transport http mcpcost https://mcpcost.ulehla.dev/mcpCapabilities
Connects to an MCP server URL now (initialize and tools/list, 10 s timeout) and reports status, protocol, how a client gets access, tool names and the token cost of the tool definitions: exact in Claude when the counter is available, else an estimate from the schema size. Use it for a URL that is not in the official registry, or to see the state this minute; for a registry server prefer lookup_server, which is instant. Sends no credentials: a server that needs them comes back with status "auth", not an error. A URL that is not https, or a server that does not answer, returns its failure as status and error.
DiscoveredPuts two to five registry servers next to each other from the board's latest daily probe: status, how a client gets in, tool count, token cost (exact in Claude when counted, else the estimate), share of a 200k window and initialize latency, with the cheapest, the most expensive and the spread. Use it to choose between servers that do the same job; use lookup_server for the full record of one server, search_servers to find candidates, and check_server for a URL that is not in the registry. Instant, no connection to the servers. A name the board does not know gets a row with status "unknown" and the comparison goes on. format picks the text layout (JSON, a Markdown table, or CSV to paste into a spreadsheet); the structured content is always JSON.
DiscoveredReads the board's latest daily probe of one server in the official MCP registry: status, how a client gets access, the exact Claude token cost of its tool definitions, tool count, latency and the most expensive tools. Instant, no connection to the server. Use it when the server is in the registry; use search_servers when you do not know its name, and check_server to probe a URL that is not in the registry. A name or URL that is not on the board returns isError with a short message.
DiscoveredAggregates of the latest daily run over the whole official MCP registry: how many servers answer and why the rest do not, token cost percentiles and the exact-to-estimate ratio, how servers authenticate, protocol versions, transports, the heaviest servers and the biggest publishers. Use it for the state of the registry as a whole; use lookup_server or search_servers for one server. No input; the answer is a few kilobytes of JSON.
DiscoveredFinds servers on the board by words in their name, title, description or host, with optional filters, sorted by exact Claude token cost (highest first) by default. With no query and no filter it ranks the whole board, so page 1 is the most expensive servers in the registry and sort=claude-asc the cheapest. Use it to discover servers or to rank them by cost; use lookup_server once you have a name, compare_servers for a few side by side, registry_summary for the totals. Returns up to 20 servers per page with name, host, status, tool count and tokens. Page numbers go to 20; after that pass the `next` value of the previous answer as `cursor`. Sorting by the estimate, latency, protocol or registry date needs a query or a small status; on a bigger list the answer keeps the token order and says so in `sort`.
DiscoveredRecent measurements
| Checked | Result | Response | Tools |
|---|---|---|---|
| Connected | 2074 ms | 5 | |
| Connected | 2149 ms | 5 |