Source: https://internal-agents.com/agents/shopify-river # Shopify — River River is Shopify’s internal Slack agent for investigating questions and making code changes in public threads. - Company: [Shopify](https://internal-agents.com/organizations/shopify) - Collection: Agents - Approach type: Agent - Deployment stage: Deployed - Autonomy: Unknown - Evidence strength: Detailed primary - Status: Internal - First reported year: 2026 - Work: Coding - Interfaces: Slack - Invocation: Interactive - Entry reviewed: 2026-09-17 ## Purpose ### Summary River is Shopify’s internal Slack agent for investigating questions and making code changes in public threads. Fact · Reported · High confidence · `shopify-river--summary` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile Representative workflow: public Slack question → collaborative investigation or code change. ## How it works ### Receive a request An employee mentions River in a public Slack channel. Fact · Reported · High confidence · `shopify-river--primitives-0` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ### Investigate and act River reads files, runs tests and queries, and posts findings; it can open pull requests. Fact · Reported · High confidence · `shopify-river--primitives-1` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ### Continue collaboratively Colleagues add constraints and redirect the work within the same thread. Fact · Reported · High confidence · `shopify-river--primitives-2` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ## Where people stay involved - **public Slack question → collaborative investigation or code change** — Unknown · Level unknown **Unreported:** The source describes a colleague optionally redirecting a public thread, but does not require continuous steering or a universal PR approval checkpoint. ### Supervision evidence #### Operating model assessment Unclassified for public Slack question → collaborative investigation or code change; human attention boundary: unknown. Inference · Catalog judgment · Unverified confidence · `shopify-river--operating-models-0` Confidence reason: The source describes a colleague optionally redirecting a public thread, but does not require continuous steering or a universal PR approval checkpoint. Qualifications: - Observation date: 2026 Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · River only works in the open: well-going thread includes a colleague redirect and continued collaboration ## Implementation details ### Harness An agent profile on Aquifer. Fact · Reported · High confidence · `shopify-river--architecture-harness` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ### Tool access Code, tests, data warehouse and production traces. Fact · Reported · High confidence · `shopify-river--architecture-tool-access` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ### Knowledge World monorepo, skills and shared Slack transcripts. Fact · Reported · High confidence · `shopify-river--architecture-knowledge` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ### Interfaces slack Fact · Reported · High confidence · `shopify-river--architecture-interfaces` Confidence reason: A linked first-party source states the claim. Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · Part II: River only works in the open; At scale; River is one profile ### Implementation coverage - **Model:** unreported — Not documented for this subject in the reviewed source. - **Harness:** reported - **Sandbox:** unreported — Not documented for this subject in the reviewed source. - **Tool access:** reported - **Knowledge:** reported - **Context management:** unreported — Not documented for this subject in the reviewed source. - **Credentials:** unreported — Not documented for this subject in the reviewed source. - **Interfaces:** reported **Unreported:** The reviewed source does not report a distinct validation process for this subject. ## Reported observations Observation: Adoption output · Reported measurement · River: 59,918 sessions across 5,170 Slack channels in a reported 30-day period; 3,536 River-coauthored PRs merged. ### Key observation 59,918 sessions across 5,170 Slack channels in a reported 30-day period; 3,536 River-coauthored PRs merged. Metric · Reported · Medium confidence · `shopify-river--key-metrics-0` Confidence reason: Self-reported by the source; no independent verification. Qualifications: - The source does not report the denominator of this figure. - Reported by: Shopify - Scope: River: 59,918 sessions across 5,170 Slack channels in a reported 30-day period; 3,536 River-coauthored PRs merged. - Method: river_sessions domain table written by River each session Evidence: - Supports · [1] [Under the River](https://shopify.engineering/under-the-river) · At scale: recent 30-day river_sessions domain-table counts ## Lessons **Unreported:** The reviewed source does not document this for the named subject. ## Question coverage and scope - **purpose:** Reported - **workflow:** Reported - **human involvement:** Unreported — The source describes a colleague optionally redirecting a public thread, but does not require continuous steering or a universal PR approval checkpoint. - **implementation:** Reported - **validation:** Unreported — The reviewed source does not report a distinct validation process for this subject. - **observations:** Reported - **lessons:** Unreported — The reviewed source does not document this for the named subject. ## Related reading - Built on: [Shopify — Aquifer](https://internal-agents.com/agents/shopify-internal-agents) ## Sources 1. [Under the River](https://shopify.engineering/under-the-river) - Engineering blog · First party · Evidence - Original URL: - Accessed: 2026-08-12 · Last verified: 2026-08-31