create_post_type
Define a new custom post type (e.g. "treatment", "service"). Required before creating posts of that type. After creating a post type, use create_post_type_field to define its structured field schema. Those fields are stored in meta on each post — do not use excerpt for structured data.
This record as markdown: /tools/io-favcrm-favcrm/create-post-type.md
What create_post_type does on FavCRM
AI agents use create_post_type to create or update resources in FavCRM, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FavCRM environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
icon | object | — | Icon name or URL |
slug | string | Yes | Lowercase identifier, e.g. "treatment". Auto-derived from label if omitted. |
label | string | Yes | Singular UI label, e.g. "Treatment" |
sortOrder | number | — | Sort order (lower = earlier) |
labelPlural | string | Yes | Plural UI label, e.g. "Treatments" |
supportsBlocks | boolean | — | Default true |
supportsExcerpt | boolean | — | Default true |
supportsNesting | boolean | — | Default false |
supportsCategories | boolean | — | Default true |
supportsFeaturedImage | boolean | — | Default true |
Parameters from the server's own tool schema.
Why create_post_type is rated Medium
This tool creates new custom post types (metadata definitions) within the CRM system. While it doesn't delete data or execute arbitrary code, it does irreversibly modify the schema configuration of the system. However, the operation is reversible through deletion or reconfiguration, and the blast radius is limited to structural changes rather than data destruction.
From the tool's definition Tool description states 'Define a new custom post type' and 'After creating a post type, use create_post_type_field to define its structured field schema.' This is a create operation that modifies system configuration by introducing new data structures.
Risk signalsHigh parameter count (10 properties)
Attacks that exploit this kind of access
The rule that runs create_post_type safely
PolicyLayer is an MCP gateway: it sits between your AI agents and FavCRM, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_post_type, this is the rule to start with:
create_post_type 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 FavCRM, apply this rule, and every create_post_type call is checked against it from then on.
Questions about create_post_type
Define a new custom post type (e.g. "treatment", "service"). Required before creating posts of that type. After creating a post type, use create_post_type_field to define its structured field schema. Those fields are stored in meta on each post — do not use excerpt for structured data. It is categorised as a Write tool in the FavCRM MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
create_post_type accepts 10 parameters: icon, slug, label, sortOrder, labelPlural, supportsBlocks, supportsExcerpt, supportsNesting, supportsCategories, supportsFeaturedImage. Required: slug, label, labelPlural. The full parameter table on this page comes from the server's own tool schema.
Register the FavCRM MCP server in PolicyLayer and add a rule for create_post_type: 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 FavCRM. Nothing to install.
create_post_type 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 create_post_type 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 create_post_type. 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.
create_post_type is provided by the FavCRM MCP server (https://api.favcrm.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on FavCRM, and thousands of servers like it.
This server
Across the catalogue