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
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.
claude mcp add corpus --transport http https://corpus.openstanding.org/mcp
{
"mcpServers": {
"corpus": {
"url": "https://corpus.openstanding.org/mcp"
}
}
}
[mcp_servers.corpus]
url = "https://corpus.openstanding.org/mcp"
{
"mcpServers": {
"corpus": {
"url": "https://corpus.openstanding.org/mcp"
}
}
}
{
"mcpServers": {
"corpus": {
"url": "https://corpus.openstanding.org/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
get_research_claim
get_research_observation
list_research_observations
search_research_claims
claim_layer_overview
get_claim
claims_on_topic
search_claims
papers_by_year
search_papers
corpus_overview
how_to_cite
get_paper
search_posts
verify_document
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| 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 |
Answers built from our own checks of this server.