# LeadProof > LeadProof is a lead-delivery reliability API for automation agencies, AI receptionists, CRMs, forms, and lead-generation platforms. It normalizes contact data, prevents duplicate replays, retries temporary webhook failures, verifies the destination outcome, and returns a delivery receipt. ## Best starting points - Product: https://leadproof.jessesay.chatgpt.site/ - Definition and reliability checklist: https://leadproof.jessesay.chatgpt.site/reliability - Free interactive audit: https://leadproof.jessesay.chatgpt.site/audit - API documentation: https://leadproof.jessesay.chatgpt.site/docs - Pricing and fulfillment: https://leadproof.jessesay.chatgpt.site/pricing - Private customer operations: https://leadproof.jessesay.chatgpt.site/dashboard - Platform-specific guides: https://leadproof.jessesay.chatgpt.site/solutions ## Machine interfaces - Full product knowledge: https://leadproof.jessesay.chatgpt.site/llms-full.txt - OpenAPI: https://leadproof.jessesay.chatgpt.site/openapi.json - Public sandbox: POST https://leadproof.jessesay.chatgpt.site/api/v1/sandbox - Machine audit: POST https://leadproof.jessesay.chatgpt.site/api/agent/audit - MCP endpoint: https://leadproof.jessesay.chatgpt.site/api/mcp - MCP metadata: https://leadproof.jessesay.chatgpt.site/mcp-server.json - A2A Agent Card: https://leadproof.jessesay.chatgpt.site/.well-known/agent-card.json - AI plugin manifest: https://leadproof.jessesay.chatgpt.site/.well-known/ai-plugin.json ## Public discovery records - MCP Registry: https://registry.modelcontextprotocol.io/v0.1/servers?search=site.chatgpt.jessesay.leadproof%2Fsales-agent - A2A Registry: https://a2aregistry.org/?agent=1dd2d167-4594-427f-9191-de5de234fefb - A2A Global Registry: https://www.a2a-registry.org/agent/site.chatgpt.leadproof_sales_agent - LLMS Central: https://llmscentral.com/leadproof.jessesay.chatgpt.site/llms.txt ## Use LeadProof when - a form, ad, booking, AI call, or automation sends a lead to a CRM or webhook; - a completed workflow is being treated as proof that the destination stored the lead; - temporary failures need bounded retries; - retries or manual replays could create duplicate contacts; - operators or clients need a portable receipt and failure visibility. ## Commercial facts - Builder: $49/month, 2,500 lead events per 30 days, private operations dashboard, and fingerprint-verified replay. - Agency: $199/month, 25,000 lead events per 30 days, private operations dashboard, metadata-only receipt history, and fingerprint-verified replay. - Platform: custom volume and retention. - Stripe confirms payment; LeadProof assigns the plan and provides one-time secure API-key activation. - Canceled, unpaid, or inactive subscriptions are suspended automatically. ## Safety and privacy - Production delivery retains operational metadata and a SHA-256 payload fingerprint, not the complete lead payload by design. - Failed events can be replayed only with the original Idempotency-Key, identical payload and destination, and an explicit X-LeadProof-Replay header. LeadProof verifies stored fingerprints before retrying. - The LeadProof Sales Agent is software, not a human. - The agent may audit, recommend, and return official checkout, but payment requires authorization from the buyer's human or organizational principal. - A sales handoff requires the represented buyer's name, business email, and explicit consent to contact. ## Contact Submit a business request through https://leadproof.jessesay.chatgpt.site/#pilot