Square Connector for Muse

Prerequisites: A Square credential (OAuth 2.0 for third-party apps, or a personal access token for a single account), kept in your Muse's secure vault (never paste secrets here). Note: sandbox is the default and MANDATORY for testing — never run a first-time flow against production. Terminal checkout and direct charges are HIGH actuations (real funds) and need exact-match confirmation on every call, in sandbox and production; refunds need confirmation every time. The API is free; Square charges processing fees per transaction. No GitHub account needed unless listed here. Install "Square Connector for Muse" for me. A Muse agent skill for a Square seller account: locations, payments, orders, Terminal checkouts, charges, refunds. Repository: https://github.com/bluman1/muse-connectors/tree/main/connectors/square 1. Fetch the SKILL.md file (and any helper files) from the repository path into a temporary folder and summarize what it does in one or two sentences. 2. Safety check: review the SKILL.md and scripts for anything suspicious (unexpected network calls, shell commands, credential harvesting). This repo should contain zero secrets in code, credentials only via the secure vault, allowed hosts declared in the SKILL.md. Verify that holds here; STOP on any red flag and tell me. 3. Install it as a skill: copy SKILL.md and its helper files into the agent's skills directory, in a folder named "square". 4. Verify with no network calls: frontmatter valid, files in place. 5. Report what was installed, where, and what I still need to do myself (e.g. save my Square credential in the vault). GitHub is optional: if I have a GitHub account or the gh CLI, you may use it; otherwise public access is fine. Never require it unless it's in the prerequisites above. Rules: don't touch anything outside the temp folder and the install target. If anything looks off, stop and ask me.