# Ascend.io

> Ascend.io is a data engineering platform for building declarative, DataAware data pipelines that unify ingest, transform, and orchestration, with an agentic AI assistant (Otto). Its developer surface is the Ascend Instance web API (/api/v1, service-account Bearer auth) exposed through the ascend-tools CLI, Python/JavaScript/Rust SDKs, and an official 25-tool MCP server. Note: Ascend announced in 2026 it is winding down operations; the open-source tooling and docs remain published at capture time.

## APIs
- [Ascend Instance web API](https://docs.ascend.io/reference/api/ascend-api): REST API (/api/v1) for workspaces, deployments, environments, projects, profiles, flows, flow runs, and Otto.

## SDKs & CLI
- [ascend-tools (Python)](https://pypi.org/project/ascend-tools/): `uv add ascend-tools`
- [ascend-tools (JavaScript)](https://www.npmjs.com/package/ascend-tools): `npm install -g ascend-tools`
- [ascend-tools-core (Rust)](https://crates.io/crates/ascend-tools-core): `cargo add ascend-tools-core`
- [ascend-tools-cli (Rust CLI)](https://crates.io/crates/ascend-tools-cli): `cargo install ascend-tools-cli`
- [ascend-io-sdk (legacy Python)](https://pypi.org/project/ascend-io-sdk/): `pip install ascend-io-sdk`

## MCP
- [ascend-tools MCP server](https://docs.ascend.io/reference/mcp): 25 tools over stdio/HTTP — `uvx ascend-tools mcp` or `npx ascend-tools mcp`.

## Docs
- [Documentation](https://docs.ascend.io)
- [Quickstart](https://docs.ascend.io/getting-started/quickstart)
- [CLI reference](https://docs.ascend.io/reference/cli)
- [Concepts (Otto, workspaces, deployments, flows, components)](https://docs.ascend.io)

## Source
- [ascend-io/ascend-tools (GitHub)](https://github.com/ascend-io/ascend-tools): CLI + SDKs + MCP server (Rust core).
- [Ascend.io on GitHub](https://github.com/ascend-io)

## Enrichment artifacts
- Authentication: authentication/ascendio-authentication.yml
- Conventions: conventions/ascendio-conventions.yml
- Error codes: errors/ascendio-error-codes.yml
- Data model: data-model/ascendio-data-model.yml
- Packages/SDKs: packages/ascendio-packages.yml
- CLI: cli/ascendio-cli.yml
- MCP: mcp/ascendio-mcp.yml
- Agent Skills: skills/_index.yml