eSIM Go
Wholesale travel-eSIM API. The catalogue lists bundles. A validate order checks a bundle without buying it. A transaction order buys it. Job: Pick an eSIM. A plan list is not an activated eSIM. This is not telecom advice. Coverage on a plan is the supplier's description of that plan, quoted on the call.
Your own key always wins, and Ancilair does not meter those calls. The price of a call on Ancilair's account is quoted on the call, with 0% markup.
Set up
1. Give this to your agent
set up Ancilair — https://ancilair.com/llms.txt2. Or add the MCP server yourself
Point the client at https://mcp.ancilair.com with X-Anc-Token or Authorization: Bearer. Calls go to https://api.ancilair.com/call/<id>.- ChatGPT: Settings, Connectors, add
https://mcp.ancilair.comas a custom connector. - Claude Desktop: Settings, Connectors, add a custom connector at
https://mcp.ancilair.com. - Claude Code: point the MCP client at
https://mcp.ancilair.com. - Cursor, or any MCP client: point it at
https://mcp.ancilair.com. - Grok: add
https://mcp.ancilair.comas a remote MCP connector in its tool settings.
Tools
Pick an eSIM
| Tool | What the call needs | Price |
|---|---|---|
esimgo.esim.plans |
Destination. Returns bundles and a price. A validate request is still this tool; it does not purchase. | Quoted on the call |
esimgo.esim.order |
The bundle, as a transaction that assigns an eSIM. Idempotency-Key required. Only after an explicit yes. Runs only after an explicit yes. | Quoted on the call |