reach_updateAContactV1
Update a contact's attributes and custom field values. Only the properties present in the request body are changed, so a partial body is enough to change a single attribute. Sending a property as null clears it. The response carries the contact's core attributes. Read back its tags, custom field ...
This record as markdown: /tools/io-github-hostinger-hostinger-api-mcp/reach-updateacontactv1.md
What reach_updateAContactV1 does on Hostinger Api
AI agents use reach_updateAContactV1 to create or update resources in Hostinger Api, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hostinger Api environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
name | string | — | name parameter |
note | string | — | note parameter |
email | string | — | email parameter |
phone | string | — | Phone number in E.164 format (leading "+" then 7-15 digits) |
fields | array | — | Set custom field values. Omit to leave untouched, send an empty array to clear them all. |
surname | string | — | surname parameter |
contactUuid | string | Yes | Contact uuid parameter |
profileUuid | string | Yes | Profile uuid parameter |
subscription_status | string | — | subscription_status parameter |
Parameters from the server's own tool schema.
Why reach_updateAContactV1 is rated Medium
Modifies contact data reversibly; no irreversible deletion or financial impact; medium blast radius if misused.
From the tool's definition Update a contact's attributes and custom field values; partial body; sending property as null clears it.
Risk signalsHigh parameter count (12 properties)
Attacks that exploit this kind of access
The rule that runs reach_updateAContactV1 safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hostinger Api, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For reach_updateAContactV1, this is the rule to start with:
reach_updateAContactV1 stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Hostinger Api, apply this rule, and every reach_updateAContactV1 call is checked against it from then on.
Questions about reach_updateAContactV1
Update a contact's attributes and custom field values. Only the properties present in the request body are changed, so a partial body is enough to change a single attribute. Sending a property as null clears it. The response carries the contact's core attributes. Read back its tags, custom field values, source and note with GET /api/reach/v1/profiles/{profileUuid}/contacts/{contactUuid}. It is categorised as a Write tool in the Hostinger Api MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
reach_updateAContactV1 accepts 9 parameters: name, note, email, phone, fields, surname, contactUuid, profileUuid, subscription_status. Required: contactUuid, profileUuid. The full parameter table on this page comes from the server's own tool schema.
Register the Hostinger Api MCP server in PolicyLayer and add a rule for reach_updateAContactV1: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hostinger Api. Nothing to install.
reach_updateAContactV1 is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the reach_updateAContactV1 rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for reach_updateAContactV1. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
reach_updateAContactV1 is provided by the Hostinger Api MCP server (hostinger-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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