AMERICAN TRADES INDEXThe living record of the skilled trade workforce
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Every licensed contractor in America, behind one API.

Fifty state registers, normalized to one schema and refreshed every night. Query the workforce, verify a license, or get a webhook the morning one changes. Free key, no card, live in five minutes.

Get a free key
verify.shCopy

    
● 200 OKapplication/json142 ms

    

  






  
Four ways to put it to work.

    
The same nightly data, however your stack wants to take it. REST for queries, webhooks for changes, MCP for agents, and a warehouse drop for your analysts.

  

    
REST API
Query the live workforce by market, trade and level, pull the movement graph, or verify a license. JSON, versioned, predictable.

      

        
GET/v1/supply?state=TX

        
→303,096 licensed, 993.6 / 100k

      

    
Webhooks
Push, not poll. Tell us the market or license you watch and we POST to you the morning the register moves. Signed and retried.

      

        
POST/v1/watches?state=TX

        
→pushed the morning it changes

      

    
MCP server
One config block and any agent works the live product in plain language, count a market, check qualifier risk, or verify a license. Claude, Cursor, or any client.

      

        
ASKLicense C10-984204?

        
→active, master electrician

      

    
Warehouse
Prefer it in your own tables? We stand up a delivery of the full dataset and the nightly diffs to Snowflake, BigQuery or Databricks, set up per customer.

      

        
SYNC2.75M rows + diffs

        
→snowflake, bigquery, databricks

      

  






  
Try a real call.

    
Every response below is the shape you get back, dated to the night the register was read. Pick an endpoint.

  

  

    

      
requestCopy

      

    

    

      
response200 OK

      

    

  

  
Verifying a license is free. Supply, the movement graph and qualifier risk are the live product, included with a One State or Fifty States subscription, and every one of them is a call away over the API and MCP, not just the dashboard.






  
Live in five minutes.

    
Create a key, make a call, subscribe to the changes you care about. No sales call, no sandbox that lies to you. The free key hits real data.

  

    
1
Get a key
One request, or one click. Your key works against live data immediately, no card required.
# create an account
curl -X POST \
  .../v1/account \
  -d [email protected]
# → ati_live_9f2c8b…

    
2
Make your first call
Count any market, or verify any license, with a single authenticated GET.
curl .../v1/supply?state=TX \
  -H "Authorization:
     Bearer ati_live_…"

    
3
Get pushed the changes
Subscribe once. We POST the events to your endpoint every morning the register moves.
curl -X POST .../v1/watches \
  -d state=TX \
  -d url=https://you.com/hook

  






  
The full surface.

    
A handful of endpoints, one versioned contract, JSON everywhere. Authenticate with a bearer key and you have all of it.

  

    
MethodEndpointReturns

    
GET/v1/verifyA single license with its current status, level and dates.

    
GET/v1/supplyThe workforce counted by state, trade and level, with density.

    
GET/v1/movementEvery change since a date, as a stream of typed events.

    
GET/v1/qualifierQualifier-of-record risk for a company, in states that require one.

    
POST/v1/watchesSubscribe to signed webhooks for a market or a single license.

    
GET/v1/usageYour calls and distinct entities pulled this billing period.

  

  

    
Base URL
https://api.americantradesindex.com

    
Authentication
Authorization: Bearer ati_live_…

  






  
Get pushed the change, not a poll.

    
Tell us the market or the license you care about. We POST to your endpoint the morning the register moves, so you never scrape or re-query to find out.

  

    

      
Event types

      

        new_license
        renewed
        classification_change
        line_added
        status_change
        dropped_off
        relocation
        qualifier_lost
      

      
Every delivery is signed with your secret using HMAC-SHA256, carries an idempotency key, and retries with backoff for 24 hours until you return a 2xx.

    

    

      
POST /hooks/atiCopy

      

    

  






  
Drop it into any agent.

    
One config block and your assistant can verify a license or count a market in plain language. It speaks the Model Context Protocol, so it works with Claude, Cursor, or anything that does.

  

    

      
Tools it exposes

      

        
verify_licenseLook up one license and the level it holds.

        
market_supplyCount a market by trade and tier, with density.

        
movement_feedThe changes since a date, returned as events.

        
qualifier_riskFlag companies at risk of losing their license.

      

    

    

      
claude_desktop_config.jsonCopy

      

    

  

  

    
NightlyEvery register re-read and diffed before 6am ET, seven days a week.

    
/v1One stable, versioned contract. We add fields, we do not break yours.

    
SignedHMAC-signed, idempotent webhooks with 24 hours of retries.

    
OpenAPIFull spec at /openapi.json, plus llms.txt so agents can read the API themselves.

  






  
Free to verify. Full product on a subscription.

    
Verifying a license is free forever. The live product, supply, the movement graph, qualifier risk and webhooks, comes with a subscription, and you can use every bit of it through the API and MCP, not only the dashboard.

  

    

      Free
$0

      
License verification against the live dataset.

      Get a free key
      
What you get

      
    
        
  • 500 license lookups a month
    • 
        
  • Verify any license across all 51 registers
    • 
        
  • The MCP server for your agent
    • 
        
  • OpenAPI spec and llms.txt
    • 
        
  • No card required
    • 
      

    

    

      One State
$500/month

      
The full live product, scoped to a single state.

      Start with one state
      
Everything in Free, plus

      
    
        
  • Full API and MCP access to the live product
    • 
        
  • Every licensed contractor and worker, by trade and level
    • 
        
  • Supply, the movement graph and qualifier risk
    • 
        
  • Signed webhooks for any market you watch
    • 
        
  • The dashboard, with no per-seat fee
    • 
        
  • The full history since day one
    • 
        
  • Unlimited seats and queries
    • 
        
  • Warehouse delivery, set up per customer
    • 
        
  • Monthly by card, cancel anytime
    • 
      

    

    

      Most complete
      Fifty States
$2,900/month

      
Every state we publish, one price for your whole company.

      Get every state
      
Everything in One State, plus

      
    
        
  • All fifty states, not just one
    • 
        
  • Track contractors as they move state to state
    • 
        
  • Compare any market against any other, nationwide
    • 
        
  • Qualifier risk across your whole book
    • 
        
  • National supply, density and trend in one view
    • 
        
  • The full national history
    • 
        
  • Annual invoicing if you need it
    • 
      

    

  

  
Building this into your own product for your own users? Ask about usage-based metered access. Talk to us






  
Get a free key.
No card, live in five minutes, hitting real data tonight.

  
Get a free key