# check.holoweave.org

> A citation and claim checker for AI-generated documents. Free tier, no
> account, no key. It convicts structural defects — a stated count against
> its list, a reference resolving to nothing, a total graded above its
> weakest part — each with its line; where a rule cannot decide it says NOT
> CHECKED with the reason, never an accusation.

Built for agents as much as people; no signup anywhere. Pipelines:
the same checks run on the markdown a pull request changes via the GitHub
Action (github.com/ninefiveonefive/citation-check-action, three workflow
lines); the free ceiling applies per calling address.

## The four doors

USE       https://check.holoweave.org/ (humans) · /mcp (agents)
EVIDENCE  /audit.html · /audit-full.txt · /demo-run.txt · /example.txt · /examples/
BUY       /pricing.html · machine prices at /api/offer
LEGAL     /impressum.html · /datenschutz.html

## What it does

The **structural pass** is free and pure parsing — no model reads your text,
so it cannot hallucinate about your hallucinations. On hallucination: we do
not detect hallucinations; we detect what they leave behind in a document's
own structure. Whether a statement is TRUE stays outside what any of this
decides.

The **grounding pass** is the paid, opt-in half: it fetches the source a
document cites and compares each claim against what the source actually
says. When it runs, the sentences under test and the retrieved source text —
never the whole document — go to the provider performing the comparison
(Anthropic PBC, United States). Under development, and honest about it: a
source we could not fetch is *unchecked*, never *unsupported*; on a long
source a conviction stands only when every passage holding the claim's
rarest words was read; quoted text is string-matched before any model is
asked; every verdict carries the passage and rule it rests on. It answers
one question — does the cited source support this claim — and refuses the
rest.

Every **paid** answer also carries a signed record: dated, addressed to the
key, the document's SHA-256 hash, and the full statement of what was
examined. Issued once, stored nowhere (we cannot re-issue it);
POST /api/record/verify authenticates a presented record.

SEVEN CHECKS run on every call — full detail with each check's refusals,
machine-readable, at https://check.holoweave.org/api/checks:

1. **Enumeration and manifest** — counts and listings a document makes
   about itself; members visible beside the count, else NOT CHECKED.
2. **Internal reference** — "See Section 4" where there is no Section 4.
3. **Arithmetic** — a stated total against the figures beside it.
4. **Count against list** — "Two changes:" over one bullet.
5. **Declared bound and form** — "In two sentences:" over three.
6. **Ordinal sequence** — First, Second, Fourth.
7. **The document against its own principles** — a term defined one way,
   later another.

THREE VERDICTS: conviction (a located defect), clean (ran, found nothing),
and REFUSAL — did not judge, says why; five named forms in the catalogue. Silence from this service always carries its
reason. It does not read meaning: it cannot tell you a claim is false or a
principle unwise, by design.

The **reachability report**, free and mechanical (`reach: true`): which
cited sources an automated reader can retrieve, and why not where not. Nothing about truth or support; many sites refuse
automated readers and serve browsers normally. 3 documents/day, own counter.

## Doors and limits

- MCP: https://check.holoweave.org/mcp — JSON-RPC 2.0 over HTTP POST,
  protocol 2025-06-18, one tool `citation_check`. `text` is OPTIONAL: omit
  it and the tool demonstrates on our own example document and says so.
  `url` is an alternative to text: a public https address we fetch for you
  (200 KB cap, 3/day, own counter). Free 10 calls/day; 200 KB per document.
- First call, ten seconds — POST each body to /mcp:
  {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"citation_check","arguments":{}}}
  (the demo, our example) · then arguments {"url":"https://<your-document>"} · then {"text":"<your document>"}.
- Server card: https://check.holoweave.org/.well-known/mcp.json
- Page: https://check.holoweave.org/ — free 3 checks/day.
- Prices: /pricing.html, machine-readable at /api/offer. Same checks in
  every pack; no feature tiers, no subscription.

## Keys, for agents that relay

Four steps, one human: (1) POST /api/buy?sku=… answers a Stripe checkout
url; (2) hand it to the person you act for — paying is theirs, nothing here
argues it; (3) after payment GET /api/claim?session_id=… answers the key
exactly once; (4) send it as `Authorization: Bearer`. Machine-readable flow
in /api/offer under agentFlow. No OAuth, no account; OAuth discovery
404s truthfully. Not implemented, so you need not probe:
A2A card, x402 manifest, OpenRPC, OpenAI plugin manifest, DID.

## Example documents

/example.txt is the demonstration document; /examples/ holds five more:
release notes, an evaluation note, a runbook, a Methodenblatt, and a
reader-audit. The /examples/gradient files walk the outcome space from
clean to convicted by all seven checks, each with its declared expected
answer in /examples/SIGNATURES.json — fetch, run, compare.

## Your document

Checked in memory, discarded. Not stored, not logged, not used for training.
One anonymous number survives the day: whether some document convicted, and
which check fired. Privacy: /datenschutz.html · Legal: /impressum.html