io.github.iklobato/briar

briar

Is the briar MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-26.

Local knowledge store built from GitHub, Jira, Linear and cloud history, served over MCP.

alive probed 2026-11-14 · unchanged since 2026-10-26

10tools

1.8ktokens in Claude Opus 5.5

0.9 %of Claude's 200k window

0.7×the median server

1.2 sto initialize

3 msto list tools

Run it: docker run -i --rm docker.io/iklob1/briar:1.1.94 (stdio, probed in a container with the network off)
Host: docker.io
Reports itself as: briar 1.1.94
Capabilities: experimental, prompts, resources, tools
Instructions: none
Of a 1M window: 0.2 % of a 1M context window
Count: 1.8k tokens in Claude Opus 5.5, exact, measured 2026-10-26. With the Claude Code prefix mcp__…__ on each tool name: 1.8k. The o200k_base estimate is 911. Counted again when the tool definitions change. Method.
Repository: https://github.com/iklobato/briar
Website: https://usebriar.com
Registry: active, updated 2026-10-13 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.95×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
extract_run	756	388	43 %
mcp_server_set_enabled	203	104	11 %
knowledge_put	187	96	11 %
knowledge_delete	132	68	7 %
knowledge_get	111	57	6 %

Other registry entries on docker.io, the ones next to this name; all of them.

Terraform io.github.hashicorp/terraform-mcp-server · alive
io.github.hummingbot/mcp · needs env
io.github.idjohnson/vikunjamcp · alive
Rails Agent Skills io.github.igmarin/rails-agent-skills-mcp · alive
Exec Sandbox io.github.inhuman/mcp-exec · alive
Kubernetes Ephemeral Job io.github.inhuman/mcp-k8s-ephemeral-job · crashed on start
io.github.jamesmontemagno/monkeymcp · alive
io.github.jgador/websharp · not probed

Servers that mention knowledge or history.

inference.sh ac.inference.sh/mcp · needs auth
Knowledge Base ai.b77/knowledge-base · needs auth
AwardCast Federal Contracts ai.awardcast/federal-contracts · alive
brainattic ai.brainattic/knowledge-base · needs auth
Buron ai.buron/buron · paid (402)
ColdState — Deterministic Knowledge Infrastructure ai.coldstate/knowledge · alive
DeepDNA ai.deepdna/knowledge · alive
ai.emberverse/emberverse · alive

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.