ComputeFirst

Agent skill

One skill teaches your agent when to use ComputeFirst and how: search for a tool, read its versioned contract, then run that exact version. The MCP connection gives it the tools. Both are free, with no key or sign-up.

Skill version 1.0.0, from commit 437f384 of 321zz321/computefirst-skill. Agents can read /SKILL.md directly or find it at /.well-known/agent-skills/index.json.

Claude Code

Install the skill and the MCP connection together from the plugin marketplace, inside a Claude Code session:

/plugin marketplace add 321zz321/computefirst-skill
/plugin install computefirst@computefirst

Or add only the MCP connection:

claude mcp add --transport http computefirst https://computefirst.net/mcp

For the skill alone, put the files in ~/.claude/skills/computefirst/ (or .claude/skills/computefirst/ in a project):

mkdir -p ~/.claude/skills/computefirst/references
curl -fsSL https://computefirst.net/skill/SKILL.md -o ~/.claude/skills/computefirst/SKILL.md
for f in limits-and-errors protocol setup verification; do
  curl -fsSL https://computefirst.net/skill/references/$f.md -o ~/.claude/skills/computefirst/references/$f.md
done

Codex

Add the MCP server to ~/.codex/config.toml:

[mcp_servers.computefirst]
url = "https://computefirst.net/mcp"

Then install the skill in ~/.agents/skills/computefirst/ (or .agents/skills/computefirst/ in a project), keeping its references:

mkdir -p ~/.agents/skills/computefirst/references
curl -fsSL https://computefirst.net/skill/SKILL.md -o ~/.agents/skills/computefirst/SKILL.md
for f in limits-and-errors protocol setup verification; do
  curl -fsSL https://computefirst.net/skill/references/$f.md -o ~/.agents/skills/computefirst/references/$f.md
done

Grok Build

grok mcp add -t http -s user computefirst https://computefirst.net/mcp

Point Grok at AGENTS.md or SKILL.md for the rules on when to call a tool and how to read its contract.

Any MCP client

Connect a remote Streamable HTTP server at https://computefirst.net/mcp with authentication off. It offers search, describe and execute over the whole catalog. A client that prefers one schema per operation can use https://computefirst.net/mcp/chatgpt instead (40 named tools, smaller limits). Agents without MCP can use plain HTTP, as shown in the skill. Config snippets for Cursor, VS Code and others are in setup.md.

Files