Polylane Developers

Everything you need to build against Polylane: the API, the MCP server, the CLI, the SDK, and how to authenticate. Agents: this page is also available as markdown at /developers.md.

Polylane quickstart

Install: curl -fsSL https://polylane.com/setup | bash installs the CLI, registers the MCP server in every coding agent on your machine, and signs you in, which creates the account (what it does).
Connect: at console.polylane.com, connect a cloud account or repository.
Mint an API key: create a key (sk_...) in the console settings.

First request:

curl https://api.polylane.com/v1/auth/whoami -H "x-api-key: sk_..."

Connect an agent: point any MCP client at https://mcp.polylane.com/mcp. OAuth clients register themselves at https://mcp.polylane.com/register.

Polylane API

Base URL: https://api.polylane.com/v1
OpenAPI 3.0 spec: https://api.polylane.com/v1/doc (mirrored at /openapi.json)
API catalog (RFC 9727): /.well-known/api-catalog
Agent authentication guide: /auth.md

Polylane MCP servers

Product (OAuth 2.0 or API key): https://mcp.polylane.com/mcp. Its tools are listed in the server card, which the server publishes itself.
Docs (no auth): https://docs.polylane.com/mcp: list and read every documentation page.
Registry: Smithery

Polylane CLI

Built to be driven by coding agents: structured output and non-interactive flags everywhere.

curl -fsSL https://polylane.com/setup.sh | bash        # macOS / Linux
irm https://polylane.com/setup.ps1 | iex               # Windows
polylane auth signup --email you@example.com

Full CLI documentation: docs.polylane.com/tools/cli.

SDK

npm: @coreplane/polylane

Rate limits

Requests are rate limited per credential. When you exceed a limit the API returns 429. Back off and honour Retry-After when present, using exponential backoff instead of retrying in a tight loop.

Versioning and deprecation

The API is versioned in the URL path (/v1). Breaking changes only ship in a new version. Deprecations are announced and documented in the docs before removal; deprecated surfaces keep working during the transition window.

Machine-readable entry points

/llms.txt: every page on the site, indexed for agents
/agent.json: the product as structured data (also at /?mode=agent)
/.well-known/mcp: MCP discovery
/.well-known/agent-skills/index.json: the agent skills index

Status

Live availability of the Polylane platform: polylanestatus.com.

Support

Email support@polylane.com or reach us on X at @polylane.