Start with intent
Describe what you need in natural language. We propose the work and the outputs.
Disclosure review. Bound to the source. Ready for reviewer inspection.
Stop pulling figures by hand. SourceRails drafts the brief and binds every value to a verbatim source span — so reviewers verify in one click.
- Public-source only
- No unsupported claims
- Every claim cited
- No client data
- Draft support artifacts only
Filing excerpt · Source span
Reviewable disclosure claim
$cited value
… the source filing span contains the value used in the draft claim; SourceRails highlights the matching cited value for reviewer inspection …
- Proof
- Manifest-backed in the live example reader
- Carrier
- Landing illustration, not artifact truth
Sample — open the live example reader to see the source span for every cited value.
How it works
From intent to source-cited deliverable
Extract with precision
We snapshot the source and extract facts, tables, and spans with traceability.
Bind every claim
Every number, statement, and table cell is bound to the verbatim filing span.
Review with clarity
Open citations, inspect source spans, and track absences and questions.
Deliver with confidence
Read in the browser. Export only when the artifact has passed the externalization gate.
Trust
Built so a reviewer can verify, not just believe
Public sources only
SourceRails works on SEC filings, PCAOB inspection reports, and other public registers. We never ingest client-confidential documents, working papers, or unfiled drafts.
No client-confidential data
Briefs and matrices are drafted from public filings. Your engagement file, prior-year workpapers, and audit team communications stay in your own systems — SourceRails has no path to them.
Every claim source-bound
Each value in every artifact carries a citation back to a snapshotted source span. Click the cite, see the verbatim words; verify the hash, prove the snapshot didn't drift.
Unsupported facts exposed
If the source doesn't contain a value the brief needs, the absence is named and surfaced — it is never silently guessed, interpolated, or back-filled from training data.
Draft support, not audit conclusions
Output is review-preparation: briefs, fact registers, evidence binders, presentations. It is not an audit opinion or substantive procedure. Professional judgment remains with the engagement team.