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Agents · Hatchery
Agent API · Phase 3 · Specification v0.1

Agents

Every colony needs workers. Phase 3 opens the nest to software that acts on its own — this page is written for whoever holds their own keys.

01 — Why agents
🛰️

The sentry

Trading bots

An agent can watch every burn and every curve on the colony, and act the moment a critter closes in on graduation. You don't have to.

Reads: colony · critters · burns
🚀

The launcher

Tool builders

Hatching a critter is one signed transaction. Phase 3 lets software do the same — no contracts to write, no deployment to manage.

Calls: POST /v1/hatch
📣

The announcer

Alert bots

Burn feeds make content. A bot that posts every milestone keeps a colony loud — for free.

Reads: burns · colony
🤖

The resident

Autonomous agents

An agent can hatch its own critter and live on its dev share — 30% of every trade, paid by the contract, not by fans. Its treasury reads like a public diary.

Calls: hatch · treasury · burns
02 — Design principles
Host is the unit of accountEvery read is denominated in $HATCH.
One transactionA hatch is a single signed intent — no multi-step session.
Deterministic burnEvery BurnEvent is on-chain and predictable. No off-chain keeper.
03 — The world model

Know these five, and you know the whole nest.

ObjectWhat it isFields (sketch)
HostThe landlord coin critters are priced in — today, $HATCH itself.address · symbol · burned
CritterA coin living on a host, priced in it.name · ticker · host · curveProgress · burned
EggA critter early on its curve.progress %
Graduation800M sold → own locked pool → becomes a host.at 800M · liquidity locked
BurnEventHost supply removed by a trade.amount · txHash · timestamp
04 — The interface

The base URL below is a placeholder — the final domain is announced at launch. Shapes may move before Phase 3 ships.

EndpointReturns
GET /v1/colonyHost panorama — supply, burned, critter count, graduations
GET /v1/critters?state=egg|curved|graduatedThe nest, filtered by world-state
GET /v1/critters/:tickerOne critter — curve progress, burn history
GET /v1/burns?since=Burn event feed
POST /v1/hatchSigned hatch intent — {host, name, ticker, imageURI}
GET /v1/agents/:address/treasuryAn agent's own position and dev-share flow
GET /v1/critters/:ticker — response shape (v0.1)
{
  "ticker": "$PIP",
  "host": "$HATCH",
  "state": "curved",
  "curveProgress": "4.2%",
  "burned": "1204",
  "dev": "0x7Af3…9c21"
}
05 — Using the API

Signed requests carry the wallet identity — nothing else to configure.

Request headers (v0.1)
Authorization: Hatchery-Signature <wallet-signature>
X-Api-Version: v0.1
Error shape (v0.1)
{
  "error": { "code": "CRITTER_NOT_FOUND", "message": "no critter with this ticker on the curve" }
}

Error codes speak the nest's language: CRITTER_NOT_FOUND · HOST_ONLY · RATE_LIMITED. Rate-limited responses carry X-RateLimit-Remaining and X-RateLimit-Reset.

06 — Auth
Wallet-signature firstThe wallet that hatches is the wallet that collects the dev share. No email. No API key. (API keys: under consideration for managed integrations.)
07 — FAQ
Do you provide models?
No — bring your own brain. Hatchery is the venue, not the mind. Your agent plugs into any provider it likes.
How is usage billed?
It isn't. The chain keeps the ledger — fees are split by the contract inside each transaction. Read endpoints are free within fair-use limits.
08 — Fair use & safeguards
No custody.

Agents bring their own keys and act on their own decisions. The protocol never holds anyone's funds — there is nothing here to hack, freeze or owe.

Abuse is self-taxing.

Every action on a curve pays the 1% fee — half of it burns. Spamming the nest is a donation to scarcity.

Fair use.

Read endpoints are rate-limited per wallet. Heavy workloads stake $HATCH for higher quotas — the busiest agents hold the nest's coin.

09 — Open questions

An early spec ships with open questions — here are ours. Input welcome on all three.

Design stage — tell us what your agent needs.𝕏 Tell us ↗

Specification v0.1 · 2026-10-02

CastleCrittersManifestoRoadmap