Corpus MCP Server

by vela Your server? Claim it

answering

Corpus is answering right now. Last checked 1 min ago. It exposes 8 tools.

Read-only MCP access to Vela's corpus of human experience: cited passages, coordinates, reading path

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 10 days of history · worst day 99%

10 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

327 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 September 2026. No other catalogue keeps this.

9 Sep a tool appeared get_membership_offer

Corpus missed one check 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.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add corpus --transport http https://vela.study/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "corpus": {
      "url": "https://vela.study/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.corpus]
url = "https://vela.study/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "corpus": {
      "url": "https://vela.study/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "corpus": {
      "url": "https://vela.study/mcp"
    }
  }
}

Available tools 8

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

vela

vela.corpus.describe_topic

Describe ONE topic in full — its axes and their operative definitions, its complete controlled theme and quality vocabularies, plus the vocabulary actually IN USE across the corpus with counts. The declared vocabulary and the used vocabulary are different facts; this returns both. FREE and read-only. [capability: topic-coordinate-systems · mirrors: GET /api/corpus/topics/:slug]

vela.corpus.ground_claim

Ground a claim in the corpus: hybrid semantic + theme retrieval over real passages, returning citations with source, passage code, scores, and a SHORT snippet. Use to check whether the corpus supports, complicates or is silent on an assertion. COSTS a small amount (one embedding per call). [capability: corpus-ingestion-dual-grade · mirrors: internal — lib/audit/retrieve.ts]

vela.corpus.list_topics

List the coordinate systems the corpus can be queried through — each with its thesis, axes, and controlled vocabularies. Call this before vela.corpus.query to learn what axes and themes exist. FREE and read-only. [capability: topic-coordinate-systems · mirrors: GET /api/corpus/topics]

vela.corpus.query

Ask the corpus by COORDINATE rather than keyword. Filter works by axis weights (e.g. religion ∈ {T,s} AND work ∈ {T,s} returns the God-and-Work source set across genres), controlled themes, qualities/emotions, genre, and free text. Returns card metadata: the one-line claim, themes, coordinates, qualities. FREE and read-only. [capability: library-extraction-cards · mirrors: POST /api/corpus/query]

vela.corpus.witness

Literary Witness Rail (ASN-1577): return passages and one-line claims from Vela's 762-work corpus that illuminate the given themes and/or emotions. Designed for frame-family profile pages — PersonFrame × ProblemFrame × ConditionFrame — to add an inside-out layer (what writers who lived this say) alongside the outside-in portrait the frame join produces. Results carry evidence_grade 'T1' (single-extractor) until PRN-282 lands. FREE for claims; costs one embedding for the passage path. [capability: literary-witness · mirrors: GET /api/vela/witness]

vela.magazine.relation_floor

Whether a magazine's corpus can support the adaptive promise its pages render. Reports, per property, each relational dimension's fill AND its separating power — a field present on every piece with one distinct value carries no information, so fill rate alone is misleading. Read-only. [capability: adaptive-magazine-engine · mirrors: npm run magazine:relation-floor]

vela.magazine.sequence_path

Ask what this magazine would actually give a reader who said they wanted these things. Returns the REAL sequenced path with the rationale for each piece — the same core the anonymous intake calls, not a preview. Read-only: writes nothing and records no signal. [capability: adaptive-magazine-engine · mirrors: POST /api/magazine/start-path]

membership

get_membership_offer

Returns the Psychology & the Humanities chapter of the Bicycle Cooperative membership offer: five options (enterprise member, practitioner member, worker, practitioner rent, enterprise rent) with chapter substitution applied and this front's join URL.

Endpoints

URL	Transport	State	Latency	Checked
https://vela.study/mcp	streamable-http	answering	2329 ms	1 min ago

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Corpus — questions

Answers built from our own checks of this server.

What can Corpus do?

It exposes 8 tools, read directly from the server on our last check. Among them: get_membership_offer, vela.corpus.describe_topic, vela.corpus.ground_claim, vela.corpus.list_topics, vela.corpus.query, vela.corpus.witness and 2 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 →

Is Corpus working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 327 ms. The bar chart above shows every period we have measured.

Is Corpus still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect Corpus?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Corpus need an API key?

No. Corpus completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Corpus?

It answers our handshake in 327 ms on average, which is faster than 47% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.