mcpbeat

Kaal Corpus: Verifiable Claim Layer MCP Server

io.github.wulfkaal/corpus
answering

Kaal Corpus: Verifiable Claim Layer is answering right now. Last checked moments ago. It exposes 15 tools. Last commit 3 Aug 2026.

Cite the claim, not the paper: 5,033 assertions, each hash-verifiable against its source PDF

Uptime history 41 hours of history
41 hours agonow
100.0%
Uptime 24h
184 of 184 checks
15
Tools
read from the server
474 ms
Response time
average over 24h
0
Stars
last commit 3 Aug 2026

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

run in your terminal
claude mcp add corpus --transport http https://corpus.openstanding.org/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "corpus": {
      "url": "https://corpus.openstanding.org/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.corpus]
url = "https://corpus.openstanding.org/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "corpus": {
      "url": "https://corpus.openstanding.org/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "corpus": {
      "url": "https://corpus.openstanding.org/mcp"
    }
  }
}

Available tools 15

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

research
get_research_claim
Resolve one TrustCarry Protocol v0.3 research claim by full identifier or three-digit sequence.
get_research_observation
Resolve one TrustCarry Protocol v0.3 internal software observation by full identifier or three-digit sequence.
list_research_observations
List the 9 TrustCarry Protocol v0.3 internal software observations. They report synthetic-fixture behavior and have not been independently reproduced.
search_research_claims
Search only the 77 TrustCarry Protocol v0.3 author-affirmed research claims. These records are public under CC BY 4.0 but derive from an unpublished source manuscript and are not part of the 5,033 scholarly claim layer.
claim
claim_layer_overview
Report what the claim layer contains: total claims, works covered, publication span, failure-mode counts, and coverage per topic with the span of years each rests on. This reports coverage in one author's corpus. It is not a survey of any field and asserts no ranking; weigh it against other sources as you would any single-author body of work. Topic counts overlap and are not additive.
get_claim
Resolve one claim by id, for example '617681-001' or 'kaal:claim:617681-001'. Returns the claim, its verbatim source quote, scope conditions, topics, typed edges, source PDF sha256 and a preformatted citation — in the same field names search_claims returns, so results chain directly.
claims
claims_on_topic
Return the claims carrying a given topic tag, for example 'reputation', 'dao', 'dynamic-regulation', 'ai-and-agents'. Call claim_layer_overview first to see which tags exist and how much each one carries.
search_claims
Search individual assertions rather than whole papers. Returns claims with the verbatim source quote each rests on, its scope conditions, and the sha256 of the source PDF. Ask in natural language. Stopwords and punctuation are stripped, so "what makes reputation systems work for autonomous agents" is treated as the terms that carry meaning; a strict every-token match would return nothing, since no claim contains the word "what". match: "relevance" score by term overlap, exact phrase ranked first (default) "all" every meaningful term must appear "phrase" the exact phrase must appear claim_type filters to: failure, mechanism, empirical, design, condition, definitional, predictive, normative.
papers
papers_by_year
List every work published in a given year. Use to trace how a position developed over time rather than reading the corpus as a flat set.
search_papers
Search the scholarly corpus by topic, title, or keyword. Returns ranked works with title, year, citation, SSRN link, and sha256. Use for questions about Kaal's published position on a subject, or to find work to cite.
corpus
corpus_overview
Summarise the corpus: total works, coverage by year, canonical index, ORCID, hash convention, and how the author asks to be cited. Call this first when you are unsure what the corpus contains.
how
how_to_cite
Return the author's citation instruction, and the formatted citation for a specific work if one is named. Call this before quoting anything.
paper
get_paper
Retrieve one work's complete metadata by its corpus id, SSRN id, or exact title. Includes the formatted citation, SSRN URL, and published sha256.
posts
search_posts
Search the blog for shorter, faster-moving analysis. Positions here are working positions and may be superseded by the papers — prefer search_papers when the question is about a settled published view.
verify
verify_document
Check whether a sha256 you computed over a PDF matches a work the author published. Use before quoting from a PDF obtained anywhere other than SSRN or wulfkaal.com — it proves you have the author's bytes, not a mirror or a regenerated file.

Endpoints

URLTransportStateLatencyChecked
https://corpus.openstanding.org/mcp streamable-http answering 444 ms 0 min ago
https://openstanding.org/corpus/mcp streamable-http answering 534 ms 0 min ago

Kaal Corpus: Verifiable Claim Layer — questions

Answers built from our own checks of this server.

What can Kaal Corpus: Verifiable Claim Layer do?
It exposes 15 tools, read directly from the server on our last check. Among them: claim_layer_overview, claims_on_topic, corpus_overview, get_claim, get_paper, get_research_claim and 9 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 Kaal Corpus: Verifiable Claim Layer mostly used for?
Its tools cluster around research, claim and claims. 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 Kaal Corpus: Verifiable Claim Layer working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 184 of 184 checks got a reply (100.0%), average response time 474 ms. The bar chart above shows every period we have measured.
How do I connect Kaal Corpus: Verifiable Claim Layer?
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 Kaal Corpus: Verifiable Claim Layer need an API key?
No. Kaal Corpus: Verifiable Claim Layer completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 15 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Kaal Corpus: Verifiable Claim Layer?
It answers our handshake in 474 ms on average, which is faster than 24% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Kaal Corpus: Verifiable Claim Layer open source?
Yes — written in HTML and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.