mcpcost MCP Server

by ondraulehlaio.github.ondraulehla/mcpcostv0.2.0

Health and token cost of every remote MCP registry server, probed daily. Look up, search, or probe.

1remoteofficial registry

context tax

~635 tok/turn4 tools

security

97/100

cold start

hosted

freshness

Activetoday

Our reading of mcpcost, from the data

mcpcost is a science & research MCP server from ondraulehla, listed in the official MCP Registry.

Its 4 tools add about 636 tokens to every model turn, lighter than the science & research median of 2,530 tokens across 124 measured servers (measured 2026-10-19).

Maintenance is active: the last public signal was in the last day (2026-10-18). For comparison, 73% of science & research servers are active or maintained.

With 1 GitHub stars it ranks #323 of 1,435 science & research servers we index.

It runs as a hosted endpoint, so there is nothing to install.

Install mcpcost MCP server

claude mcp add --transport http mcpcost https://mcpcost.ulehla.dev/mcp

{
  "mcpServers": {
    "mcpcost": {
      "url": "https://mcpcost.ulehla.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "mcpcost": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://mcpcost.ulehla.dev/mcp"
      ]
    }
  }
}

Or add it as a custom connector under Settings → Connectors. The config above bridges via mcp-remote.

{
  "servers": {
    "mcpcost": {
      "type": "http",
      "url": "https://mcpcost.ulehla.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "mcpcost": {
      "serverUrl": "https://mcpcost.ulehla.dev/mcp"
    }
  }
}

Remote endpoints

streamable-httphttps://mcpcost.ulehla.dev/mcp

Context tax

Connecting this server adds ~636 tokens of tool definitions to every model turn (lean, 4 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Model	Per 1,000 turns	With prompt caching
Claude Opus 5.5	$2.54	$0.127
Claude Sonnet 5.5	$1.27	$0.127
Claude Haiku 5.5	$0.064	—

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (4)

search_servers239 tok
Find servers by words in name, title, description or host, with optional filters, sorted by exact Claude token cost by default. Returns up to 20 servers per page; page numbers go to 20, after that pass the `next` cursor from the previous answer.
check_server124 tok
Connects to an MCP server URL now (initialize and tools/list, no credentials, 10 s timeout) and reports status, protocol, tools and the token cost of the tool definitions: exact in Claude when the counter is available, else an estimate from the schema size. For registry servers prefer lookup_server.
lookup_server110 tok
Latest probe of one server from the official MCP registry: status, protocol, tool count, exact token cost of its tool definitions in Claude, latency. Accepts the registry name (io.github.owner/name) or the server URL.
registry_summary60 tok
Aggregates of the latest daily run: how many servers answer, token cost percentiles, protocol versions, heaviest servers.

Security signals

97/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Deductions

No security policy (SECURITY.md)-3

Checks

✓Repository hygiene (archived, activity, license, security policy)
✓Tool descriptions (prompt-injection and hidden-text heuristics)
○Package metadata (install scripts, provenance) — pending
○Source scan (secrets, CVEs, risky code) by vectra-guard — pending

Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules

Freshness

Active — last maintenance signal today. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-18 · today · GitHub
Latest release
2026-10-15 · 3d ago · GitHub · v1.1.0
Package published
no data · npm/PyPI
Registry entry updated
2026-10-15 · 3d ago · official registry · v0.2.0

How it compares in Science & Research

Against the most-starred science & research servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
mcpcost (this)	1	4	635	Active	hosted
Wigolo	5,486	—	not measured	Active	local
Zotero	5,460	—	not measured	Active	local
Exa	5,138	2	564	Active	local + hosted
Postgres	3,403	—	not measured	Maintained	—
Arxiv	3,224	—	not measured	Active	local

All science & research MCP servers

FAQ

›How do I install the mcpcost MCP server in Claude Code?

Run: claude mcp add --transport http mcpcost https://mcpcost.ulehla.dev/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does mcpcost require an API key?

No required environment variables are declared in its published metadata.

›Can I use mcpcost as a remote (hosted) MCP server?

Yes. It is a hosted MCP server; connect to its URL with any client that supports remote MCP.

›Is mcpcost in the official MCP registry?

Yes, as io.github.ondraulehla/mcpcost.

›How many tokens does mcpcost add to my context?

Its tool definitions total about 635 tokens, resent on every turn.

Sources and method

Official MCP Registry entry: updated 2026-10-15
GitHub repository: fetched 2026-10-19
Tool list (tools/list), measured by us: 2026-10-19
Security signals, computed by us: 2026-10-19
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.