Agent-first AI infrastructure

Agent-First API

LemonData keeps model access, discovery, and recovery on one path, so one serious runtime can start fast and grow into a coordinated AI team.

Start freeRead Agent-First API

OpenAI-compatible

Find the right model without leaving the request flow

300+ models

Return retry timing and live alternatives when something fails

Pay as you go

Start with one primary runtime, then expand into Teams when the work divides by role

Runtime trace

01 / 03
1

Model discovery

3 live options ranked

2

Failure recovery

retry hint returned

3

Runtime path

Start with one runtime, grow into a team when the workflow splits

api.lemondata.cc
online

Primary

gpt-4o

Fallbacks

3 paths

Policy

Agent-First

First request

POST
POST
/v1/chat/completions
model: "gpt5"

Retry hint

did_you_mean
{
  "code": "model_not_found",
  "did_you_mean": "gpt-4o",
  "hint": "Use GET /v1/models"
}

Signals agents can use

3 signals

retry_after

8s

alternatives

3 models

llms.txt

ready

Agent-First

Most APIs stop at errors instead of giving agents semantic guidance

What matters is structured hints, live alternatives, and machine-readable discovery that agents can actually use.

Traditional API

  • 1400 {"error":{"message":"Model not found"}}
  • 2Agent searches docs
  • 3Agent guesses a model name
  • 4More retries, more wasted tokens

LemonData

  • 1400 {"code":"model_not_found","did_you_mean":"gpt-4o"}
  • 2Agent reads the hint
  • 3Agent retries once
  • 4The flow continues without a human lookup

Three signals that keep the flow moving

1

Error hints agents can parse

did_you_mean, retry_after, and alternatives come back in the response.

2

Discovery that starts from the API

Agents can use /v1/models and llms.txt instead of scraping docs.

3

The right endpoint, nudged in time

Successful responses can still point agents toward the better next endpoint.

Product paths

Start from one line of code Change one base URL and you are in

One unified API for 300+ models, real-time comparison to find the best fit, then a workflow-first runtime that can grow into teams.

Browse models

See models, capabilities, and pricing in one directory.

Open model directory

Compare models

Choose between GPT, Claude, Gemini, and others without jumping across tabs.

Open compare

Read the Agent-First guide

See how discovery, retries, and agent-friendly responses fit together.

Read the guide

LemonClaw

Start with one workflow-first runtime, then add more instances and compose LemonClaw Teams when the work splits by role.

Open LemonClaw

LemonClaw

From one agent to an AI team

LemonClaw starts by making one workflow-first runtime reliable, then grows into a coordinated team of long-running AI teammates on the same control plane.

LemonClaw Runtime

Workflow-first agent

Start with one long-running runtime for research, planning, execution, memory, and governance.

LemonClaw Teams

Enterprise AI collaboration team

When the workflow splits by role, add more instances and coordinate them as one AI team.

One runtime model, from solo flow to team

A primary runtime owns the entry workflow, while member runtimes can take research, execution, review, and other specialist roles.

Explore LemonClaw Teams

Perception

Reads files, web pages, IM channels, runtime state, and knowledge sources.

Action

Writes through local tools, the web, external APIs, and message channels.

Memory

Keeps session memory, long-term facts, user docs, and runtime traces in layers.

Planning

Splits work, pauses, resumes, and tracks progress across longer tasks.

Self-Repair

Knows what it is doing, why it failed, and what to try next.

Governance

Keeps risky actions bounded and makes behavior traceable, interruptible, and replayable.

Pricing

Free credits Run the full test path

New accounts start with credits, so teams can connect the API, test models, and run the full business flow before spending.

Start free

01

Try with free credits

New accounts can make a first call before any billing decision.

02

Stay usage-based

Recharge only when needed and keep spend in one place.

03

Open detailed pricing later

Go deeper in the model directory when you compare real workloads.

FAQ

Frequently Asked Questions

What is LemonData?

LemonData is an AI API aggregation platform that provides unified access to 300+ AI models from various providers including OpenAI, Anthropic, Google, and others through a single API endpoint.

How does pricing work?

We use a pay-as-you-go model. You add credits to your account and usage is deducted from your balance. Our pricing is 30-70% cheaper than going directly to providers.

Is LemonData compatible with OpenAI SDK?

Yes! LemonData is fully compatible with OpenAI's API format. You can switch by just changing the base URL and API key in your existing code.

Is there a free trial?

Yes! New users receive $1 in free credits to try out the platform.