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Liminal MCP Server

by physea Your server? Claim it
answering

Liminal is answering right now. Last checked 13 min ago. It exposes 27 tools. Last commit 12 Oct 2026.

Augment your work with Liminal. Stop repeating yourself and build on what’s already solved.

Uptime history 91 days of history · worst day 52%
91 days agonow
98.9%
Uptime 24h
90 of 91 checks
27
Tools
read from the server
460 ms
Response time
average over 24h
0
Stars
last commit 12 Oct 2026

What changed 18

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 7 September 2026. No other catalogue keeps this.

15 Sep a tool description was rewritten runs
15 Sep a tool changed the parameters it asks for runs
9 Sep 2 tool descriptions were rewritten compress_context, setup
9 Sep a tool changed the parameters it asks for setup
9 Sep a tool appeared setup
7 Sep 5 tools changed the parameters they ask for algorithms, export_result, handoff and 2 more
7 Sep 4 tools appeared algorithms, recover, runs and 1 more
7 Sep 3 tool descriptions were rewritten algorithms, handoff, task

Liminal missed 2 checks this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add liminality --transport http https://liminality.physea.ai/mcp
Settings → Connectors → Add custom connector, then paste this address
https://liminality.physea.ai/mcp
~/.codex/config.toml
[mcp_servers.liminality]
url = "https://liminality.physea.ai/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "liminality": {
      "url": "https://liminality.physea.ai/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "liminality": {
      "type": "http",
      "url": "https://liminality.physea.ai/mcp"
    }
  }
}

Available tools 27

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

apply
apply_form
Apply form answers to sharpen a task.
apply_grade
Apply a grade-form answer to a result.
report
report_feedback
Report structured feedback on a result.
report_outcome
Report verified real-world outcome evidence for a result.
settings
get_settings
Read this caller's saved solve and safety settings.
set_settings
Save caller-scoped settings from one dict (depth, optimization, trace, relay, governance); keys and values in get_capabilities.
algorithms
algorithms
Create, validate, release and run pure algorithms over versioned datasets; runs replay byte-identical with zero model calls. action='run' is one solve; other actions are free.
ask
ask_form
Create a short form for missing user-specific facts.
capabilities
get_capabilities
List solve modes and every public capability.
catalog
catalog
Read the capability catalog: action='search' returns every saved candidate for an objective with distinctiveness deltas; action='delta' compares a named entity pair.
composio
composio_connect
Create a caller-scoped connection link for a toolkit.
compress
compress_context
Compress long context into a task-focused brief; use before reading any source over 8,000 characters.
delegation
delegation
Create, resume, or report a bounded subagent packet (action='create'|'resume'|'report').
export
export_result
Export a caller-owned result in a supported format.
handoff
handoff
Create, safely resume, or list caller-scoped cross-session checkpoints (action='create'|'resume'|'list'). Create accepts an optional subject and source_sessions; Liminality assigns the subject number. Resume by handoff_id — 'latest' resumes the newest unfinished resumable checkpoint, or asks which one when several were created in the last 24h; detail='full' returns the complete checkpoint.
manage
manage
Compatibility router for retained-context lifecycle actions.
optimize
optimize
Rank bounded one-factor variants for a route against your stated objective; candidates remain unsaved.
priorities
set_priorities
Save caller-scoped tasks and importance signals.
recover
recover
Find a workaround for a blocked obligation without changing the task: open a case, read candidates with their boundary, choose, retry, verify against the original criteria (action='open'|'candidates'|'choose'|'retry'|'verify'|'add_candidate'|'get'|'list').
register
register_asset
Register a caller-owned resource for future grounding.
research
research
Run a multi-source research pass for a question.
result
get_result_detail
Fetch the full caller-owned result behind a lean solve.
runs
runs
Run lifecycle with run and attempt identity (action='start'|'status'|'list'|'cancel'|'reconcile'|'attempt'|'execute'|'outcome'|'approve'|'grants'|'revoke'): cancel persists, an unknown effect is reconciled before any retry, simulate never executes, approve grants operation_kinds for hours and returns approval_id.
setup
setup
Context-minimality setup with no questions (auto); or profiles, status, verify.
solve
solve
Decompose, ground, and answer a non-trivial task. Supports saved or per-call depth, safe trace, caller tools, and lean/full output.
task
task
Read or version the contract behind a solve (action='get'|'list'|'versions'|'new_version'|'graph'|'create'|'state'); graph also returns what is still unfinished.
taxis
taxis
Return this caller's deterministic ranked priority frame.

Endpoints

URLTransportStateLatencyChecked
https://liminality.physea.ai/mcp streamable-http answering 478 ms 13 min ago

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Liminal — questions

Answers built from our own checks of this server.

What can Liminal do?
It exposes 27 tools, read directly from the server on our last check. Among them: algorithms, apply_form, apply_grade, ask_form, catalog, composio_connect and 21 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is Liminal mostly used for?
Its tools cluster around report, settings and apply. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Liminal working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 460 ms. The bar chart above shows every period we have measured.
How do I connect Liminal?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Liminal need an API key?
No. Liminal completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 27 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Liminal?
It answers our handshake in 460 ms on average, which is faster than 26% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Liminal open source?
The code is open source: it is published under the Apache-2.0 licence, written in Dockerfile, 0 stars on GitHub and 2 open issues. The licence covers the code in the repository, not the hosted service at liminality.physea.ai, which runs on its operator's own terms.