synthiaresearch
Synthia evals your AI agent against simulated users: probe it to infer who it's for, generate a synthetic scenario dataset, play the scenarios against it, and judge every rollout — locally from this SDK, or as a CI gate on every pull request.
pip install synthiaresearch # Python ≥ 3.10; the import name is `synthia`
Quickstart
from synthia import Synthia
client = Synthia() # reads SYNTHIA_API_KEY / SYNTHIA_BASE_URL
# One call: probe + generate (or reuse this script's dataset), play every
# scenario against your agent, judge the rollouts server-side.
def rollout_agent(transcript, sandbox):
return my_agent.respond_with_tools(transcript, sandbox)
outcome = client.run(rollout_agent, agent_meta={"name": "my-agent"})
print(outcome.pass_rate, outcome.evaluations)
Each step — prepare(), rollouts.run(), rollouts.quality_check() — is
also available
individually
when you need to intervene between them.
In CI
The package ships the synthia CLI (also python -m synthia): point a
synthia.yaml at a module exporting agent(transcript, sandbox) -> reply
and gate PRs on the pass rate —
synthia validate # check config + entrypoint, no network
synthia run # play the suite, judge it, gate on thresholds
— or use the GitHub Action
with language: python. Setup guide:
Synthia in CI.
Documentation
- Python API reference
— every method, plus the deliberate divergences from the JS SDK (no
ready();wait(**kwargs); rollouts run on a thread pool, so your agent callable must be thread-safe). - CLI reference · synthia.yaml · environment & sessions
- Runnable examples: examples/
Mirrors the JS/TypeScript SDK
(synthiaresearch on npm) — same API surface, same CLI, same yaml,
byte-identical results-JSON contract. Replies and tool events are
redacted by default
before upload. MIT licensed.
Development
src/synthia/client.py— the SDK: theSynthiaclient, resource classes, and the local probe/rollout loops with tool-call tracing.src/synthia/cli/— thesynthiaCLI, a module-for-module mirror of the JS CLI (same schema, same exit codes, same report contract).pyproject.toml— thesynthiaresearchpackage definition (httpxandpyyamlas the only runtime dependencies; the import name stayssynthia).
1 maintainer
Metadata
1 maintainer
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