backend, for agentic apps

Skip the server.
Ship the agent.

AgentKit Cloud is the managed backend for apps built with the AgentKit SDK. Plug in your provider keys, point your app at our endpoint, and we run the streaming, the auth passthrough, and the bookkeeping. You write the app.

$24.99 / mo · bring your own keys
request pipeline
01key.validate
02kill.check
03jwt.verify
04agent.resolve
05tier.route
06quota.gate
07budget.lock
08provider.relay
09usage.write
tok/s
42
req · today
184,230
p95 · lat
1.82s
02

The most useful backend is the one you don't write.

a developer · five weeks into the yak shave
03
credentials

Your provider keys, encrypted in our care.

Paste your Anthropic, OpenAI, and Gemini keys once. We hold them in AES-256-GCM with a master key in Fly secrets, decrypt only in-flight, and never log them.

cipheraes-256-gcm
master keyfly secrets
loggingredaction at the edge
04
identity

Your auth. Verified, every turn.

Sign in with Apple, Firebase, your own JWKS, or a raw public key — configure trusted issuers once per project. We validate the user JWT on every request.

appleaudience match
firebaseproject id match
custom jwkscached + rotating
05
observability

See which user burned which tokens.

Every inference call is bucketed by the validated user. Top consumers, monthly spend, error rates per user — visible in your dashboard in real time.

bucketed byjwt.sub
retention7 days · hobby
exportcsv · s3
06
guardrails

Spend caps that hold, even under fire.

Per-user rate limits in Redis. Monthly spend ceilings with atomic budget reservation — racing requests can't burst past your cap.

rate limitredis · token bucket
budgetatomic · pre-reserve
kill switch~2s propagation
09
$24.99
per month · usd · one plan
projects
5
requests / mo
500,000
tokens / mo
50M
log retention
7 days