Kaal Corpus: Verifiable Claim Layer is answering right now. Last checked 14 min ago. It exposes 18 tools.
Cite the claim, not the paper: 5,033 assertions, each hash-verifiable against its source PDF
The linked repository no longer exists on GitHub — it was deleted or made private.
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.
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.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 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"
}
}
}
This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.
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
positions_on_topic
search_positions
corpus_overview
how_to_cite
get_paper
get_position
search_posts
verify_document
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://corpus.openstanding.org/mcp | streamable-http | answering | 496 ms | 14 min ago |
| https://openstanding.org/corpus/mcp | streamable-http | answering | 496 ms | 14 min ago |
Query a verified document collection: passages that answer a question, with their source.
Query a verified document collection: passages that answer a question, with their source.
Verify AI outputs against real sources. Returns a trust signal and permanent doc number.
Omitly's local, verifiable PDF redaction for AI agents — your documents never leave your device.
Permanent local PDF redaction: text is removed and verified gone, not covered. No uploads.
Verifiable provenance for AI agents — ZK proofs over confidential documents, no plaintext exposure.
Mail Merge PDF: the site's own MCP server — checker, enquiry (enquiry = a human handoff, not a...
Compare PDF or Word versions and return source-cited changes ranked by cost, time, or risk.
Answers built from our own checks of this server.