Citation verification
Grounded answers cite their source, and you can check any draft claim by claim against your own material.
Citation verification is the core of Perch. It is the reason Perch exists as a separate product rather than as one more general assistant. For work where a fabricated source has real consequences, the value is not a confident answer. It is an answer you can trace and trust.
Perch handles this in two ways: citations attached to the answers it writes, and a dedicated check for drafts you already have.
Citations on grounded answers
When Perch answers from your material, it attaches the source behind the claim. Each cited claim points back to the passage it came from, so you can open the source and confirm it yourself.
Just as important, Perch marks claims it cannot support. If a line is not backed by the material Perch read, it is flagged rather than presented as established fact. This is the opposite of a general assistant, which states supported and unsupported claims with the same confidence. Perch shows you which is which.
Check a draft's citations
The draft checker is the most direct expression of the idea. Paste a draft, such as a brief or a memo, and Perch checks it claim by claim against the sources in your workspace. Each checkable claim comes back marked:
This is the check that general chatbots cannot credibly offer, because they have no fixed set of sources to check against and no way to show you the passage.
What "verified" means, precisely
It is worth being exact about what the checker does, because precision is the whole point.
What the checker does and does not do
The checker verifies a claim against the sources in your workspace: the documents you have uploaded or indexed. A claim marked verified means Perch found supporting material in your sources and can show it to you. A claim marked not found means Perch did not find support in your sources.
The checker does not, on its own, confirm that an external authority exists in the world or that a citation is formatted correctly. It checks claims against the material you have given it. The practical workflow is to keep the authorities you rely on in your workspace, so that checking a draft against them is meaningful. The result is a check you can act on, scoped to material you control, rather than a confidence score with nothing behind it.
Where to use it
- On the web, the draft checker is available directly in the chat surface.
- In writing work with Quill, claims are checked as part of producing the draft, so unsupported lines are marked before the draft reaches you.