FOR CHIEF ESTIMATORS · $0 TO TRY

We'll analyze your next bid free. No catch.

653 pages in. A printable risk brief, a priced material takeoff, and verbatim spec citations out — by Monday. If it earns its keep, $249 next time. If not, no follow-up, no hard feelings.

Your bid PDFs are never used to train models. End-to-end encryption. Delete on request.

VERIFIED · 2,806 of 3,315 · 509 thrown out
Analysis Brief
Half Hollow Hills CSD · Oil Tank Replacements · BBS 25-263/264 · 653 pages
TOP FINDINGS · RANKED BY COST IMPACT
#174 / 2,806
Mandatory temporary fuel supply during tank changeover — open-ended cost
“all work shall be done so as not to interrupt or interfere with the daily/occupancy of the building. this shall include the provision of a temporary fuel supply if necessary.”
REFM1.01 General Notes §15 · p. 2
CARRY CONTINGENCY
#347 / 2,806
Addendum #1 modifies bid date — submitting on bid-form date = rejected
“the addendum date controls; if you submit on the bid-form date your bid will be rejected as late.”
REFAddendum #1 · p. 1
CONFLICTBid Information Sheet (May 7, 2026)
BID-KILLER
60-PAGE PRINTABLE BRIEF
in plain english

What BidLedger does, in one paragraph.

BidLedger is a citation-verified construction bid analysis pipeline. You drop in a bid set — 600+ pages of drawings, project manual, addenda, bid form. It reads every page, finds risks and scope items, checks every finding word-for-word against the source PDF, and writes a printable risk brief plus a five-sheet priced material takeoff. Findings the AI can't verify never reach the report — they're logged separately so you can audit them. Built for GC chief estimators and MEP subs.

how it works

Watch each step do its job.

Five steps in the pipeline. Click any to see exactly what happens inside.

step 1 of 5

Every page indexed. Every document fingerprinted.

We hash every PDF, classify drawings vs. spec vs. addenda vs. bid form, extract text deterministically, and rasterize each page for the multimodal stage. Re-runs are cheap and idempotent.

  • 8 documents fingerprinted with SHA-256
  • 612 pages indexed in 1.2 seconds
  • Document types auto-classified
INGEST · 8 DOCUMENTS612 pages
📄
Project_Manual.pdf
287 pp
8f3a..b2c1
📄
Drawings_A_Series.pdf
142 pp
c4d2..9f08
📄
Drawings_M_Series.pdf
98 pp
a701..3d4e
📄
Addendum_01.pdf
12 pp
e092..771a
📄
Addendum_02.pdf
23 pp
b550..2204
📄
Bid_Form.pdf
8 pp
771f..40b9
all 8 docs fingerprinted in 1.2s
tuned for your trade

Pick your industry. See a real sample.

case · K-12 plumbing
25-1202

Half Hollow Hills School District

612 pages · 8 documents · 4 addenda · 87 verified findings

All hangers and supports for piping 2-1/2 inches and larger shall be furnished with vibration isolators per Section 23 05 48. Failure to comply shall result in field rework after structural inspection.
§23 05 13 · p.234 · verbatim · conf 0.9
Brief.pdf· 184 KBMTO.xlsx· 412 KB
defensible by design

If anyone asks where a finding came from, we hand them the receipt.

your bid's audit chain · live from the database
event
S0_INGEST
8f3a..b2c1
event
S1_PROBE
c4d2..9f08
event
S2_SCAN
a701..3d4e
event
S3_VERIFY
e092..771a
event
REJECT_FLASH
b550..2204
2 findings dropped
event
S5_SYNTH ✓
771f..40b9
verifyChain(db, bidId) → ok · runs in < 200ms · readable by your CTO at 2 a.m.
TAMPER-EVIDENT

Each event hash includes the previous event's hash. Change one event and the whole chain breaks visibly.

REJECTIONS PRESERVED

AI findings that failed citation verification are kept in findings-rejected.jsonl. Forensic trail intact.

YOUR BIDS STAY YOURS

Never used to train a model. Run inside our managed environment or self-host the pipeline on your infrastructure.

send your next bid · free

We'll analyze it for free.

Email it over, or paste a shared link. Read by an estimator within 1 business day. If it earns its keep, $249 next time.

🔒 Confidential. Your bid never trains a model. We never sell or share bid data.