# LeadProof Lead Delivery API

> 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/
- Canonical product identity: https://leadproof.jessesay.chatgpt.site/about
- Citation-ready facts and limitations: https://leadproof.jessesay.chatgpt.site/facts
- Lead delivery API buyer guide: https://leadproof.jessesay.chatgpt.site/lead-delivery-api
- Browser-only break-even calculator: https://leadproof.jessesay.chatgpt.site/calculator
- Definition and reliability checklist: https://leadproof.jessesay.chatgpt.site/reliability
- Failed lead replay procedure: https://leadproof.jessesay.chatgpt.site/failed-lead-replay
- Canonical reliability glossary: https://leadproof.jessesay.chatgpt.site/glossary
- Free interactive audit: https://leadproof.jessesay.chatgpt.site/audit
- Complete public example audit: https://leadproof.jessesay.chatgpt.site/audit/example
- One-click synthetic sandbox: https://leadproof.jessesay.chatgpt.site/sandbox
- Free production trial: https://leadproof.jessesay.chatgpt.site/trial
- API documentation: https://leadproof.jessesay.chatgpt.site/docs
- JavaScript and Python quickstart clients: https://leadproof.jessesay.chatgpt.site/sdk
- Pricing and fulfillment: https://leadproof.jessesay.chatgpt.site/pricing
- Builder offer: https://leadproof.jessesay.chatgpt.site/plans/builder
- Agency offer: https://leadproof.jessesay.chatgpt.site/plans/agency
- LeadProof versus direct webhooks and building retries in-house: https://leadproof.jessesay.chatgpt.site/compare
- Reusable lead delivery reliability checklist: https://leadproof.jessesay.chatgpt.site/reliability-checklist.json
- Machine-readable plans and checkout policy: https://leadproof.jessesay.chatgpt.site/plans.json
- Buyer-verifiable product evidence: https://leadproof.jessesay.chatgpt.site/proof
- Human-readable service status: https://leadproof.jessesay.chatgpt.site/status
- Machine-verifiable evidence manifest: https://leadproof.jessesay.chatgpt.site/.well-known/product-evidence.json
- Verified public discovery records: https://leadproof.jessesay.chatgpt.site/.well-known/discovery-evidence.json
- Citation-ready first-party answers: https://leadproof.jessesay.chatgpt.site/.well-known/ai-citations.json
- Machine-readable integration catalog: https://leadproof.jessesay.chatgpt.site/.well-known/integrations.json
- Product changelog: https://leadproof.jessesay.chatgpt.site/changelog
- Private customer operations: https://leadproof.jessesay.chatgpt.site/dashboard
- Platform-specific guides: https://leadproof.jessesay.chatgpt.site/solutions

## Machine interfaces
- LeadProof agent capability catalog: GET https://leadproof.jessesay.chatgpt.site/api/agent
- Full product knowledge: https://leadproof.jessesay.chatgpt.site/llms-full.txt
- Atom product-update feed: https://leadproof.jessesay.chatgpt.site/feed.xml
- JSON Feed product updates: https://leadproof.jessesay.chatgpt.site/feed.json
- OpenAPI: https://leadproof.jessesay.chatgpt.site/openapi.json
- Plan catalog: GET https://leadproof.jessesay.chatgpt.site/api/plans
- Public health check: GET https://leadproof.jessesay.chatgpt.site/api/health
- Human-readable service status: GET https://leadproof.jessesay.chatgpt.site/status
- Machine build-versus-buy comparison: GET https://leadproof.jessesay.chatgpt.site/api/compare
- Machine integration matching: GET https://leadproof.jessesay.chatgpt.site/api/integrations?stack=Vapi%20to%20GoHighLevel
- Self-describing sandbox guide: GET https://leadproof.jessesay.chatgpt.site/api/v1/sandbox
- Public sandbox: POST https://leadproof.jessesay.chatgpt.site/api/v1/sandbox
- One-click synthetic sandbox UI: https://leadproof.jessesay.chatgpt.site/sandbox
- JavaScript client: GET https://leadproof.jessesay.chatgpt.site/sdk/leadproof.mjs
- Python client: GET https://leadproof.jessesay.chatgpt.site/sdk/leadproof.py
- Production trial activation: POST https://leadproof.jessesay.chatgpt.site/api/trial (verified sign-in required)
- Self-describing reliability-audit guide: GET https://leadproof.jessesay.chatgpt.site/api/agent/audit
- Machine audit: POST https://leadproof.jessesay.chatgpt.site/api/agent/audit
- Self-describing fit-evaluation guide: GET https://leadproof.jessesay.chatgpt.site/api/agent/evaluate
- Machine fit evaluation: POST https://leadproof.jessesay.chatgpt.site/api/agent/evaluate (browser CORS supported)
- No-input replay trial evaluation: GET https://leadproof.jessesay.chatgpt.site/api/agent/replay-trial (browser CORS supported)
- MCP endpoint: https://leadproof.jessesay.chatgpt.site/api/mcp (browser CORS supported, no credentials)
- MCP metadata: https://leadproof.jessesay.chatgpt.site/mcp-server.json
- A2A Agent Card: https://leadproof.jessesay.chatgpt.site/.well-known/agent-card.json
- Integration catalog: https://leadproof.jessesay.chatgpt.site/.well-known/integrations.json
- AI plugin manifest: https://leadproof.jessesay.chatgpt.site/.well-known/ai-plugin.json
- Citation-ready first-party answers: https://leadproof.jessesay.chatgpt.site/.well-known/ai-citations.json
- Public registry evidence: https://leadproof.jessesay.chatgpt.site/.well-known/discovery-evidence.json
- Security disclosure contact: https://leadproof.jessesay.chatgpt.site/.well-known/security.txt

## Public discovery records
Machine-readable verification feed: https://leadproof.jessesay.chatgpt.site/.well-known/discovery-evidence.json

- MCP Registry: https://registry.modelcontextprotocol.io/v0.1/servers?search=site.chatgpt.jessesay.leadproof%2Fsales-agent (verified 2026-07-30T04:19:25.000Z; HTTP 200 response contains the LeadProof brand and canonical product domain.)
- A2A Global Registry: https://www.a2a-registry.org/agent/site.chatgpt.leadproof_sales_agent (verified 2026-07-30T04:19:25.000Z; HTTP 200 response contains the LeadProof brand and canonical product domain.)
- Glama MCP Directory: https://glama.ai/mcp/connectors?query=LeadProof (verified 2026-07-30T04:19:25.000Z; HTTP 200 response contains the LeadProof brand and canonical product domain.)
- Agenstry: https://agenstry.com/providers/LeadProof (verified 2026-07-30T04:19:25.000Z; HTTP 200 response contains the LeadProof brand and canonical product domain.)
- LLMS Central: https://llmscentral.com/leadproof.jessesay.chatgpt.site/llms.txt (verified 2026-07-30T04:19:25.000Z; HTTP 200 response contains the LeadProof brand and canonical product domain.)

## 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
- Production trial: $0, 25 live lead deliveries, 14 days, no card, one per verified identity.
- 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, return the no-card trial, 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