Mature coding-agent CLIs have converged on the same conventions: positional prompt, -p means print, exec is headless, resume is a first-class command, -C changes directory; rivumi inherits this vocabulary directly, driving learning cost close to zero.
A blank config file drives people away; a bad credential discovered too late drives them away faster. All five mature agents treat setup as a first-class state, and rivumi adds the step most of them skip: verify the key right after saving it.
Stainless uses OpenAPI plus its configuration to generate multi-language SDKs, docs, CLIs, and MCP servers. Its value is a continuous preview, publishing, and upgrade pipeline rather than one-off codegen.
Factory breaks 'can an agent work in this repo' into eight pillars and five levels, and published real scores: CockroachDB L4 (74%), FastAPI L3 (53%), Express L2 (28%). The thesis is that agent readiness approximates the density of deterministic validation loops — linters, type checkers, tests are reward signals for agents.
Google deployed AutoCommenter to tens of thousands of engineers and published the whole tuning process: suppressing 17 'technically correct but low-value' rules raised the useful ratio from 54% to 66%, with 80% set as the bar for the next rollout stage. Final comment-resolution rate landed around 40%. The bottleneck in AI code review was never detection — it's volume.
How an individual connects tools is a preference; how an organization does it is governance — who can touch what data, where keys live, whose budget it lands on. Anthropic's published record of ten internal teams contains a good indicator: security engineering accounts for 50% of all custom slash commands in the entire monorepo. Adoption doesn't spread evenly; it takes off first in teams that already build their own tools.
Background agents replace 'you watch it run' with 'it finishes and opens a PR.' Every vendor's design converges on the same parts: an isolated environment, external triggers (issues, Slack, Linear), and a PR as the output. The genuinely new problem is that you become the bottleneck — five agents finish at once, five diffs queue for you, and none of them know the others exist.