For devs & agents · no signup to try
Drop-in sandbox APIs for agents and integrations: build and test without test accounts, tokens or fake data to maintain. Nothing real to leak or break.
Read-only, API-compatible replicas of the services you build with, preloaded with one simulated company. Change one base URL; every run gets the same answer. Your real keys stay out of the pipeline, and no run can write to production.
What you skip
- Set up a test account
- Register an OAuth app, mint a token
- Put a real credential in CI
- Write fake data, keep it fresh
- Maintain mocks against a moving spec
- Burn real API quota in test runs
- Keep one mock per SDK
- Chase CI flakes from drifting data
- Hope nothing writes to production
What you get
Believable by default
Repositories, issues, users, teams, commits, channel threads — all pre-populated and internally consistent.
One data set, every provider
The same people, PRs, issues and threads on every host we serve, with matching SHAs — so an integration that spans tools lines up.
Deterministic
Pinned snapshots regenerate byte-identically, so CI never flakes on the data and agent evals replay exactly.
REST + GraphQL
Exercise the exact transport your integration uses today. Same data, provider-shaped semantics.
01 / Try it — no signup
A real response in under a second.
curl https://gh.sandboxapis.dev/repos/olympus-labs/parthenon{
"id": 273073411,
"node_id": "UmVwb3NpdG9yeToyNzMwNzM0MTE",
"name": "parthenon",
"full_name": "olympus-labs/parthenon",
"private": true,
"description": "Monorepo for the Olympus Labs developer platform — the temple everything is built on.",
"default_branch": "main",
"language": "TypeScript",
"stargazers_count": 0,
"open_issues_count": 37,
"topics": [
"developer-tools",
"platform",
"typescript",
"monorepo"
],
"created_at": "2026-04-26T17:20:00Z",
"pushed_at": "2026-04-26T17:20:00Z",
"visibility": "private"
}…AND THIS COMES BACK. Real, provider-shaped JSON in <1s, with provider-conventional rate-limit headers showing the anonymous quota.
02 / The catalog
21 APIs, one data set.
Providers
21
Across 7 categories, each on its own hostname, all telling one story.
Read surfaces
3,353
REST endpoints, GraphQL entities and git-transport routes in the coverage manifest — 2,395 served and verified today, the rest answering with an explicit coverage error.
Pinned snapshots
148
Pinned, byte-reproducible universes on their own hosts, so CI never flakes on the data.
2 categories are listed above with nothing in them yet — they are the lanes the provider-expansion program opens next, and they are named rather than hidden so this page reports what we do not serve as plainly as what we do.
03 / Adoption is a base-URL swap
Keep your client library — change one line.
import { Octokit } from "@octokit/rest";
// The only change: point baseUrl at SandboxAPIs.
const octokit = new Octokit({ baseUrl: "https://gh.sandboxapis.dev" });
const { data } = await octokit.repos.get({
owner: "olympus-labs",
repo: "parthenon",
});
console.log(data.full_name); // "olympus-labs/parthenon"Get a free key
Or stay anonymous at 60 req/hour. A free key raises that to 600 req/hour, burstable in a fixed hourly window and reported in the rate-limit headers your client already reads.
Set one env var
Point your client's base URL at the host you need. 7 categories — git host, issue tracker, AI telemetry, messaging, CI/CD, observability, CRM/support — all serve the same data set, and your auth, SDK and client code stay exactly as-is.
Your app just works
Exercise the happy path and the weird path against one deep, coherent data set that behaves like production — with nothing real connected.
05 / Look around
06 / Pricing
Get started for free.
Every provider is served at every tier — a paid plan buys headroom, never an endpoint. Anonymous access stays free at 60 req/hour forever, and paid starts at $5/month for one developer.