Swytchcode is a CLI execution layer that sits between your AI agent and production APIs like Heygen — handling authentication, retries, idempotency, and policy control so your agent can call real APIs safely instead of failing silently.

How do I get started with Swytchcode?

Run "npx swytchcode" to install the CLI — no account required. Then run "swytchcode get heygen" to pull the Heygen manifest and you're ready to call it from your agent.

How does an AI agent actually call the Heygen API through Swytchcode?

Your agent runs "swytchcode exec heygen. " with arguments. Swytchcode validates the call against the Heygen manifest schema, attaches your stored credentials, executes the request, and returns structured JSON your agent can act on — no auth or HTTP handling lives in your agent's code.

What happens if a Heygen call fails, times out, or hits a rate limit?

Swytchcode assigns every Heygen call an idempotency key and retries it automatically on transient failures or rate limits. If your agent re-runs the same action, Swytchcode recognizes the retry and prevents duplicate writes — a raw HTTP call wouldn't give you that safety net.

Can I restrict which Heygen actions my agent is allowed to run?

Yes. Policy rules in "tooling.json" let you allowlist or blocklist specific Heygen actions — for example, allow read-only calls but block anything destructive, or require approval above a threshold. Swytchcode enforces this before the call reaches Heygen, not after.

Where does Swytchcode store my Heygen credentials?

You authenticate once, and Swytchcode stores and refreshes your Heygen credentials server-side. Your agent — and the LLM behind it — only ever sees action names and results, never raw API keys or tokens.

Do I need to write a custom Heygen SDK integration for my agent?

No. "swytchcode get heygen" pulls a pre-built, versioned manifest describing every available Heygen action and its parameters, so your agent calls actions by name instead of you writing and maintaining request/response glue code.

How is calling Heygen through Swytchcode different from calling its API directly?

A direct call means you handle token refresh, retries, error parsing, and schema drift yourself, with no guardrails on what the agent can execute. Swytchcode does all of that and checks each call against your policy rules first, so an agent can't do something with Heygen you didn't explicitly approve.

Which AI agent frameworks can call Heygen through Swytchcode?

Any of them. Swytchcode is framework-agnostic — Claude Code, Cursor, GitHub Copilot, LangChain, CrewAI, or a custom agent that can shell out to a CLI or invoke a tool. Only the Heygen call is routed through Swytchcode; your agent logic doesn't change.

Does Swytchcode log what my agent does with Heygen?

Yes. Every Heygen call — action, arguments, result, and timestamp — is written to a full audit trail, so you can debug unexpected agent behavior or review exactly what ran in production.

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AI & Machine Learning

API Integration

Heygen API for AI Agents

Connect the Heygen API to your AI agent through Swytchcode. Call it from Claude, Cursor, LangChain, or any custom agent — Swytchcode handles authentication, retries, and rate limits.

Connect Heygen to your agent

Provider: Heygen
Category: AI & Machine Learning
License: Proprietary
Manifest: heygen
Official site: Not published
API docs: Not published

Use cases

What can you build with the Heygen API?

Call Heygen directly from an AI agent without writing custom auth, retry, or error-handling code.

Pull live ai & machine learning data from Heygen mid-conversation and act on it in the same agent run.

Chain Heygen with other approved integrations in a single execution, validated against your policy rules.

Give an agent safe read/write access to Heygen in production, with idempotent retries if a call fails.

Setup guide

How to connect the Heygen API to an AI agent

Four steps, no SDK, no boilerplate. Every Heygen call routed through Swytchcode is idempotency-keyed and safe to retry.

1
Install the CLI
Run "npx swytchcode" to install the Swytchcode CLI — no account required to start.
2
Pull the manifest
Run "swytchcode get heygen" to pull the Heygen API manifest, including its schema and available actions.
3
Authenticate once
Provide your Heygen API credentials a single time. Swytchcode stores and refreshes them so your agent never handles raw secrets.
4
Call it from your agent
Run "swytchcode exec heygen.<action> --key value" from any agent — Claude, Cursor, LangChain, CrewAI, or your own code.

swytchcode get heygen
swytchcode exec heygen.<action> --key value

FAQ

Frequently asked questions

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Ready to connect Heygen?

Install the CLI and pull your first manifest in under a minute. No account required.

Get started free

Heygen API for AI Agents

What can you build with the Heygen API?

How to connect the Heygen API to an AI agent

Frequently asked questions

What is Swytchcode?

How do I get started with Swytchcode?

How does an AI agent actually call the Heygen API through Swytchcode?

What happens if a Heygen call fails, times out, or hits a rate limit?

Can I restrict which Heygen actions my agent is allowed to run?

Where does Swytchcode store my Heygen credentials?

Do I need to write a custom Heygen SDK integration for my agent?

How is calling Heygen through Swytchcode different from calling its API directly?

Which AI agent frameworks can call Heygen through Swytchcode?

Does Swytchcode log what my agent does with Heygen?

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Ready to connect Heygen?