Close Leads API

The leads API from Close — 3 operation(s) for leads.

Business capability
Opportunity & Pipeline Management BC-410.30

Operations 6

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /lead/ List leads · List Leads #
Ask an LLM
“How can I pull every lead in my Close account?”
“Can I return only certain fields when listing leads?”
Tell an agent
List our leads.
List {limit} leads showing only {fields}.
POST /lead/ Create a lead · Create a new lead #
Ask an LLM
“Can I create a lead with its contacts and address in one call?”
“What status does a new lead get if I don't set one?”
Tell an agent
Create a lead for Acme Corp with its main contact.
Add a new lead with custom field values and a Potential status.
POST /lead/merge/ Merge two duplicate leads · Merge two leads #
Ask an LLM
“How do I merge a duplicate lead into another one?”
“Which lead survives when two leads are merged?”
Tell an agent destructive · confirm first
Merge the source lead into the destination lead.
Combine these two duplicate leads into one.
GET /lead/{id}/ Get a single lead · Get a single Lead #
Ask an LLM
“Where can I see everything about one lead?”
“Can I fetch just a few fields of a specific lead?”
Tell an agent
Show lead {id}.
Get the {fields} of lead {id}.
PUT /lead/{id}/ Update a lead · Update an existing lead #
Ask an LLM
“Can I change a lead's status or custom fields without replacing the lead?”
“Why can't I edit a lead's nested contacts here?”
Tell an agent
Update lead {id} to the Qualified status.
Change the name and custom fields on lead {id}.
DELETE /lead/{id}/ Delete a lead · Delete a lead #
Ask an LLM
“Can I permanently delete a lead from the CRM?”
“What's the call to remove a lead?”
Tell an agent destructive · confirm first
Delete lead {id}.
Permanently remove lead {id}.

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/close:close-leads-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

close-leads-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  description: Close CRM REST API
  title: Close Leads API
  version: 1.0.0
servers:
- url: https://api.close.com/api/v1
security:
- ApiKeyAuth: []
- OAuth2: []
tags:


# --- truncated at 32 KB (45 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/close/refs/heads/main/openapi/close-leads-api-openapi.yml