# plugin (slim)

> plugin, an MCP server by circulara.ai, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.

- Full: https://www.anchorterminal.com/tools/circulara-plugin.md (~450 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/tools/circulara-plugin.json · canonical https://www.anchorterminal.com/tools/circulara-plugin
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

# plugin

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by circulara.ai (https://circulara.ai)
- Listed because: It's published in the registry under circulara.ai, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.

## Facts

- MCP registry: `ai.circulara/plugin` 0.1.2
- Package: npm `@circulara/plugin` (stdio)
- Source: https://github.com/CircularRoute/circulara-core
- npm downloads a week: 41
- Registry entry updated: 2026-07-09

- JSON: https://www.anchorterminal.com/api/v1/tools/circulara-plugin.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming