Normalize
Standardize common contact fields before the destination receives the record.
Lead delivery API
Verify the handoff between a captured lead and the system that must receive it.
LeadProof is a lead delivery API for CRM and webhook reliability. It normalizes fields, prevents duplicate replays, retries eligible failures, verifies destination responses, and returns receipts.
A lead delivery API turns “the source sent a request” into a bounded, observable delivery outcome.
It sits after a form, ad, booking, call, chat, or automation and before a CRM, webhook, scheduler, database, or sales queue. It is not a CRM, lead marketplace, lead list, or outreach system.
Delivery contract
One event identity from capture to receipt.
The production request uses an API key, one stable Idempotency-Key, an authorized public HTTPS destination, and a minimal lead payload. LeadProof stores operational metadata and a SHA-256 fingerprint rather than intentionally retaining the complete production payload.
SOURCE EVENT
→ NORMALIZE → IDEMPOTENCY
→ DESTINATION → VERIFIED OUTCOME
→ RECEIPTSix safeguards
What reliable delivery requires.
Deduplicate
Reuse one stable idempotency key across attempts and explicit replays.
Retry
Retry only eligible temporary failures with bounded attempts and backoff.
Verify
Interpret the destination response instead of treating a completed source workflow as proof.
Receipt
Return a portable receipt identifier, final status, attempt count, and timestamp.
Recover
Make final failures visible and replay them only with the original identity and unchanged payload.
Where it fits
Use one reliability layer across the workflows you already operate.
Automation agencies — Standardize one delivery contract across authorized client workflows.AI receptionists — Keep the final CRM handoff observable after a qualified call or chat.Forms and lead ads — Protect the step between a captured submission and its business destination.Software products — Add duplicate-safe webhook delivery and operational receipts.
LeadProof verifies the destination HTTP outcome—not a CRM-specific business result it cannot inspect.
Networked software cannot guarantee uninterrupted source, network, or destination availability. The public sandbox is simulated, the example audit is illustrative, and no public customer records or invented testimonials are used as product evidence.
Buyer questions
Evaluate the category before you connect it.
What is a lead delivery API?
A lead delivery API accepts an authorized lead event from a source system, applies delivery safeguards, sends it to a destination, and returns a machine-readable outcome.
Is a lead delivery API a CRM?
No. It is the reliability layer between the source and an existing CRM, webhook, scheduler, database, or sales queue.
Does an HTTP 200 always prove the CRM saved a lead?
No. A response only proves what the destination contract says it proves. LeadProof verifies the destination HTTP outcome and does not claim CRM-specific object creation without a destination-specific check.
Can I evaluate failed-lead replay without sharing lead data?
Yes. The public replay evaluation requires no input, account, or credentials and returns the replay requirements, evidence, limitations, and no-card trial path.
How can a buyer test LeadProof?
Run the fixed synthetic sandbox first, then use the no-card production trial for 25 live deliveries over 14 days with one verified identity.
Run 25 live deliveries before buying.
The production trial lasts 14 days, requires one verified identity, and does not require a card. Builder is $49 per month after the workflow is proven.