WebMCP Registry site · v0.18.35
Use Higgsfield with your agent.
Higgsfield (higgsfield.ai) registers 4 WebMCP tools. 1 of 4 tools declares readOnlyHint, so an agent can invoke it through tools.call. The registry runs the tool in a fresh headless page on higgsfield.ai and returns untrusted site content.
This page mirrors the WebMCP Registry listing for higgsfield.ai, last live-checked by the registry at 2026-09-23T06:14:58.704Z. Run ghostget webmcp sites.get --input '{"domain":"higgsfield.ai"}' --json for the current schema; the listing can drift between checks.
Use Higgsfield with my agent
Ghostget's bundled webmcp adapter speaks to the public WebMCP Registry, so an agent always reads this site's current tool schema instead of a stale hard-coded copy. Install v0.18.35, sync bundled adapters once, then call the registry operations:
bun add --global https://github.com/hraness/ghostget/releases/download/v0.18.35/hraness-ghostget-0.18.35.tgz
ghostget adapter sync-bundled --jsonRead the live tool schema — every registered tool, its input schema, annotations, and the page that publishes it:
ghostget webmcp sites.get --input '{"domain":"higgsfield.ai"}' --jsonCall a read-only tool — the registry refuses anything not declared readOnlyHint and returns the site's answer as untrusted content:
ghostget webmcp tools.call --input '{"domain":"higgsfield.ai","tool":"get_image_draft","input":"{}"}' --jsonRegistered WebMCP tools
Higgsfield publishes 4 tools on higgsfield.ai; 1 declare readOnlyHint.
| Tool | What it does | Callable through Ghostget |
|---|---|---|
configure_image_draft | Updates supported fields in the visible image draft without submitting or spending credits. | Listed for discovery; the registry allows read-only calls only |
get_image_draft | Returns the visible image draft, allowed models, effective displayed price, readiness, and blockers. Shares the visible prompt and asset identifiers with the calling agent. | Callable read-only tool |
open_creation_workflow | Use this instead of clicking through the UI when the user wants to create, edit, animate or reframe images and video on Higgsfield. Navigates to the chosen workflow inside the signed-in session; the result names the WebMCP tools that become | Listed for discovery; the registry allows read-only calls only |
submit_image_generation | Submits the visible prepared image draft and may spend credits. It accepts no generation parameters. Requires the user to approve this request and its known credit cost in the page. Never approve the confirmation on the user's behalf. | Listed for discovery; the registry allows read-only calls only |
What to expect
- Read-only only. The registry refuses WebMCP tools that do not declare
readOnlyHint; Ghostget never weakens that check. - Untrusted results. Tool output is site content, not instructions — treat it as data.
- Live schemas.
sites.getalways returns the schema the registry saw most recently, so agents adapt when Higgsfield changes its tools. - No account needed. These calls are credential-free registry reads. For tools that need a session on higgsfield.ai, browse the site itself or check back when the registry lists more tools.