OpenMayhem

ai.openmayhemPublished by openmayhem.aiOfficial publisherv1.0.0Updated Nov 2, 2026

Use OpenMayhem text, embedding and media models with explicit cost controls.

VerifiedStreamable HTTPWeb executableFinanceAI & ML

Overview

AI-generated overview

OpenMayhem gives an assistant access to hosted text, embedding and media models, with live model catalog lookup and explicit per-request cost caps.

What you can do
  • Look up models: list the live catalog and read availability, capabilities, limits, routes and prices for a single model
  • Estimate and count: request estimation and token counting before running anything
  • Run paid model jobs: text, embedding and media execution, each requiring a current estimate and an explicit maximum cost
  • Manage jobs and artifacts: check balance, read or cancel jobs, and look up artifacts you own
When to use it
Useful when you want an assistant to call OpenMayhem's text, embedding or media models through an existing OpenMayhem account, and you want cost visibility and a hard spending cap on every paid call.
Requirements
Either the remote Streamable HTTP endpoint with the X-OpenMayhem-API-Key header, or the local MCPB/stdio bridge, which needs Node.js 22 or newer. A restricted OpenMayhem API key created in the dashboard, and HTTPS access to the hosted service.
Before you install
Model execution is paid and draws on your OpenMayhem account balance; every paid tool needs an estimate and an explicit maximum cost, so set that cap deliberately. The API key is a secret stored as a sensitive setting or sent as a header, and should be restricted and revocable. Jobs can be cancelled, which changes state on the hosted service.

Installation

In SourceWeft

  1. Open OpenMayhem in the dashboard and add it to a workspace.
  2. Connect the required credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/ai.openmayhem%2Fopenmayhem/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "openmayhem": {
      "type": "http",
      "url": "https://mcp.openmayhem.ai/mcp"
    }
  }
}

README

OpenMayhem MCP

OpenMayhem's local stdio bridge forwards MCP messages to the hosted OpenMayhem service. It does not bundle a stale catalog: list_models and get_model read the live catalog, availability, capabilities, limits, routes, and prices from OpenMayhem. Account balance and payment logic remain on the hosted service, and the bridge contains no provider data or credentials.

Install

Download openmayhem-mcp-v1.0.0.mcpb from the v1.0.0 release and install it in an MCPB-compatible client. The client asks for a restricted OpenMayhem API key and stores it as a sensitive setting.

Clients that support remote Streamable HTTP can connect directly:

text
URL: https://mcp.openmayhem.ai/mcpHeader: X-OpenMayhem-API-Key: your restricted OpenMayhem API key

Create and revoke API keys at openmayhem.ai. Complete setup, tool, payment, and client instructions are at openmayhem.ai/docs/mcp.

Billing

Model discovery, request estimation, token counting, balance checks, job reads, cancellation, and owned-artifact lookup do not spend model credit. Model execution is paid. Every paid tool requires a current estimate and an explicit maximum cost.

The bridge does not calculate charges or handle payment information. Requests use the existing OpenMayhem account, balance, reservation, receipt, and settlement paths.

Requirements

  • Node.js 22 or newer
  • A restricted OpenMayhem API key
  • HTTPS access to mcp.openmayhem.ai

License

MIT

Source: README.md at commit fdc261e

Tools

0
This server asks you to sign in, so SourceWeft could not read its tools without an account and has not indexed them. What a connected account sees can depend on that account and its permissions.

Version history

1
  1. v1.0.0LatestSep 20, 2026

Score

85% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts