REST API

The D50 REST API

One HTTPS + JSON API over the whole platform — find customers, run the CRM, place AI calls, generate content, screen candidates. The same 100+ capabilities as the MCP server, addressable from any language or backend.

HTTPS + JSONBearer authapp.d50.ai/api300–1,000 req/min

Authentication

Create an API key at app.d50.ai → Settings → API keys and send it as a bearer token on every request:

Authorization: Bearer d50_live_…

Keys can be scoped to a named set of tools and given an expiry. They're stored only as a hash — copy the key when it's created. Every call is billed to the account's unified credit wallet (1 credit = $1), the same rate whether a human or an agent makes it.

Quickstart

Search the 300M+ business-contact network and reveal the top result's contact:

# 1) search
curl https://app.d50.ai/api/v1/leads/search \
  -H "Authorization: Bearer d50_live_…" \
  -H "Content-Type: application/json" \
  -d '{"industry":"saas","country":"AE","limit":25}'

# 2) reveal a contact (bills 0.30 credits)
curl https://app.d50.ai/api/v1/leads/reveal \
  -H "Authorization: Bearer d50_live_…" \
  -d '{"leadId":"lead_…"}'

Endpoint surface

Endpoints are grouped by mission. Each maps 1:1 to the equivalent MCP tool.

Area	What you can do
Leads	Search the 300M+ contact network, filter, reveal contacts, enrich (basic/standard/premium)
CRM	Contacts, companies, deals, pipelines, notes, activities, stats
Outreach	Email, SMS, WhatsApp, AI phone calls, web calls, call status
Content	Scripts, captions, images, AI video, logos, static ads, ad copy, render
Funnels	Build/edit/publish funnels & pages, clone a landing page, analytics
Recruiting	Candidates, AI screening calls, AI interviews, pipeline stages
SEO & Intel	Keyword volume, backlinks, LLM-mention sweeps, competitor & ad intel
Agents	Create, deploy, list, monitor, and stop AI agents
Account	Credit balance & history, analytics, invoices

Prefer auto-discovery? The MCP server exposes the identical surface to agents via tools/list — no per-endpoint wiring.

Rate limits

Plan	Rate limit	Included
Free	—	API access on paid plans
Pro · $99/mo	300 req/min	All tools, $30 credits/mo
Agency · $299/mo	1,000 req/min	All tools, white-label, $100 credits/mo

Errors

Standard HTTP status codes with a JSON body: 400 bad request, 401 invalid/expired key, 402 insufficient credits, 403 tool not in key scope, 429 rate limited, 5xx server error. Each error returns { "error": { "code", "message" } }.

Ready to build? Create an API key — or wire an agent up through the MCP server.