Finite E2B sandbox-local envd health, resource metrics, environment-variable, and file-download operations. Generated from the immutable official spec/envd/envd.yaml contract at E2B commit 7474d904a2f6056f9528e73baf697368e03bf6ab. This leaf carries 4 of the suite's 72 admitted operations. Pick the sandbox-scoped E2B envd connection carrying X-Access-Token and E2b-Sandbox-Id. Re-enroll it when the sandbox or access token changes. JSON request documents are sent verbatim, scalar integer selectors use exact decimal strings, unsafe JSON response integers remain exact strings, reads are uncached, private reads are marked sensitive-read, every mutation requires approval, and no sandbox or infrastructure object is misrepresented as a task, note, or project Source.