io.github.duttkunal101-lab/token-lens
Token Lens
Is the Token Lens MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-01.
Count and cut tokens in prompts, chats and agents for any model. Runs locally, collects no data.
alive probed 2026-11-15 · unchanged since 2026-11-01
- Run it
- npx -y @kunal_dutt/token-lens@0.2.37 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- token-lens 0.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Of a 1M window
- 0.5 % of a 1M context window
- Count
- 4.9k tokens in Claude, exact, measured 2026-10-25. With the Claude Code prefix mcp__…__ on each tool name: 5.0k. The o200k_base estimate is 2.9k. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-10-17 · registry entry
- Changes
- 2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.73×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| optimize_agent | 968 | 558 | 20 % |
| audit_agent_rules | 659 | 380 | 13 % |
| optimize_prompt | 644 | 371 | 13 % |
| estimate_cost | 586 | 338 | 12 % |
| check_conversation | 564 | 325 | 11 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.dunctk/refreshagent · alive
- io.github.dundas/thinkrun · alive
- Dungeon Roll — On-Chain D&D Combat io.github.dungeonroll0/dungeon-roll · needs env
- io.github.dustinhansen/plex-mcp · needs env
- EU VAT rates io.github.duty27/eu-vat · alive
- Chassis io.github.dvd90/chassis-mcp · alive
- Zotero Native MCP io.github.dvdsosa/zotero-native-mcp · alive
- io.github.dversum/mcp-server · alive
Servers that mention token.
- AlphaCreek SEC Filings MCP ai.alphacreek/alphacreek-mcp · alive
- Bareun — Korean NLP & Spell/Grammar Checking ai.bareun/bareun · alive
- CoinGraph ai.coingraph/coingraph · needs auth
- Creator SKILL v2 — Influencer Discovery ai.deinai/creator-skill-v2 · needs auth
- Creator SKILL — Influencer Discovery ai.deinai/creator-skill · needs auth
- ai.getvda/auth-token-mcp-service · newer protocol
- ai.getvda/auth-token-mcp-traced-service · newer protocol
- ai.getvda/encrypted-langchain-token-agent · newer protocol
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-25 06:52 | alive | 589 ms | 11 | 4.9k | 2.9k |
| 2026-10-18 06:40 | alive | 506 ms | 11 | 2.9k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.