codai-sdk — Python SDK

Official Python client for the codai AI gateway. Zero dependencies (stdlib only), Python 3.9+.

pip install codai-sdk

You need a codai API key. Get one at codai.ro. The import name stays codai:

from codai import Codai

client = Codai(api_key="ck-...", session_id="my-project")

# Chat (OpenAI-compatible, smart-routed)
result = client.chat([{"role": "user", "content": "Explain asyncio.gather"}])
print(result.content)
print(result.routed_to)   # which model actually served

# Streaming
for delta in client.chat_stream([{"role": "user", "content": "hi"}]):
    print(delta, end="", flush=True)

# Server-side agent loop
run = client.agents_run("Find and summarize the TODOs in this codebase")
print(run.result)

# Feedback (improves routing for everyone)
client.feedback(result.request_id, 1)

codai extensions

Resource groups (0.2.0)

Every gateway operation is a method on the client, grouped exactly like the TypeScript SDK (camelCase → snake_case). The 0.1.x helpers above still work — client.chat([...]) and client.chat.completions.create({...}) are the same call. Every method takes an optional ext={...} bag of X-Codai-* headers (effort, thinking, thinking_budget, cache, no_task, task_id, device, compact, best_of, share_token, … plus raw headers).

from codai import Codai, CodaiError

client = Codai(api_key="codai_...", device="5dc0de00-0000-4000-8000-00000000c0da")

# Chat with extension headers; raw chunks + aggregate on streams
r = client.chat.completions.create(
    {"model": "codai", "messages": [{"role": "user", "content": "hi"}]},
    ext={"effort": "high", "thinking": True, "thinking_budget": 8192},
)
print(r.content, r.routed_to, r.usage)

stream = client.chat.completions.stream({"messages": [{"role": "user", "content": "hi"}]})
for delta in stream:            # text deltas; stream.chunks() for raw chunk dicts
    print(delta, end="")
print(stream.final.usage, stream.final.tool_calls)

# Anthropic / OpenAI Responses wires
client.messages.create({"messages": [{"role": "user", "content": "hi"}], "max_tokens": 200}).text
client.responses.create({"input": "hi"}).output_text

# Async agent run + SSE progress
run = client.agents.runs.create({"task": "Summarise the repo README."})
for ev in client.agents.runs.stream(run["id"]):
    if ev["event"] == "done":
        print(ev["data"]["status"], ev["data"]["result"])

# Tasks, account, receipt
page = client.tasks.list(limit=20)
print(client.account.get()["plan"], client.receipt.get(since="2026-09-01T00:00:00Z"))

# Shared sessions (needs a device id on the client) and hosts
s = client.sessions.create({"title": "pairing"})
for ev in client.sessions.stream(s["id"], after=0):
    print(ev["event"], ev["data"].get("seq"))
print(client.hosts.list())

try:
    client.orgs.members.add("org-1", {"user_id": "u", "role": "member"})
except CodaiError as e:
    print(e.status, e.code, e.request_id, e.retry_after)

Typed request/response shapes live in codai._types (generated from the OpenAPI spec — TypedDicts such as ChatCompletionRequest, Task, SessionEvent, CreateSessionShareResponse).

codai Resolve (0.4.0)

Pay per verified fix: submit a public GitHub issue, get a flat quote, accept it (held on your wallet), and pay only when the fix passes your tests. First 3 fixes are free. Lives on https://resolve.codai.ro (same key; resolve_base_url= to override).

from codai import Codai, ResolveInsufficientFundsError

client = Codai(api_key="codai_...")
job = client.resolve.submit({
    "repo_url": "https://github.com/owner/repo",
    "issue_url": "https://github.com/owner/repo/issues/42",
})
if job["status"] == "quoted":
    try:
        client.resolve.accept(job["id"])
    except ResolveInsufficientFundsError as e:
        print("top up first:", e.topup_url, e.bundle_url or "")  # bundle_url: t7 only
        raise
done = client.resolve.wait_for(job["id"])
print(done["status"], done.get("attestation_url"))

Failed attempts and infrastructure errors refund the hold in full. Types: codai._resolve_types (generated from resolve.yaml).

Pricing (0.7.0). Your first paid accept holds €1 instead of the list price (the quote then carries intro_price_micro_eur / list_price_micro_eur); it is used up only by a verified fix — a failed intro job is refunded and the intro is offered again. A fix bundle (€49 = 10 credits, https://pay.codai.ro/checkout?bundle=resolve10) pays for t7 jobs only: a credit is taken at accept instead of a wallet hold and returned on failure. Precedence: free > intro > credit (t7) > wallet; accept() reports it in paid_with, a t7 402 sets bundle_url, and client.resolve.balance() returns fix_credits, intro_available and wallet_micro_eur.

Webhooks instead of polling (0.5.0)

Pass callback_url (https, public host) on submit; the response carries callback_secret once — store it. Resolve POSTs job.quoted, job.declined, job.resolved, job.failed and job.error, signed with x-codai-signature: t=<unix>,v1=<hex HMAC-SHA256>. Verify the raw body with verify_resolve_webhook (constant-time, 300 s tolerance by default). Up to 3 attempts on 5xx/429/network errors; deduplicate on x-codai-delivery; delivery never changes job state — get(id) stays the source of truth.

import json
from codai import verify_resolve_webhook

job = client.resolve.submit({
    "repo_url": "https://github.com/owner/repo",
    "issue_url": "https://github.com/owner/repo/issues/42",
    "callback_url": "https://ci.example.com/hooks/codai-resolve",
})
save_secret(job["id"], job["callback_secret"])  # shown once

# in your webhook handler (FastAPI: raw = await request.body())
if not verify_resolve_webhook(secret, raw, request.headers.get("x-codai-signature")):
    raise HTTPException(401, "bad signature")
event = json.loads(raw)  # event["event"], event["job"]["attestation_url"]

Verifying a signed attestation (0.6.0)

Attestations created from 2026-09-27 carry signature: a DSSE envelope (ECDSA P-256/SHA-256) over a canonical statement of sha256 hashes of the patch, repro test and test outputs, plus the commands, base commit, runner digest and timestamps. verify_attestation checks that the signed statement matches the fields you were served (stdlib) and the signature against GET /v1/resolve/keys — the signature step needs pip install cryptography (the SDK stays dependency-free; without it an ImportError explains what to install). Older attestations have signature: None → {"ok": False, "reason": "UNSIGNED"}.

proof = client.resolve.attestation(job["attestation_url"])
r = client.resolve.verify_attestation(proof)  # or keys=pinned_keys
if not r["ok"]:
    raise SystemExit(f"not verified: {r['reason']}")  # BAD_SIGNATURE | STATEMENT_MISMATCH | ...
print("signed by", r["keyid"])

Development

python -m venv .venv && .venv/Scripts/python -m pip install -e ".[dev]"
.venv/Scripts/python -m pytest -q             # unit + OpenAPI parity tests, no network
.venv/Scripts/python scripts/gen-types.py     # regenerate src/codai/_types.py

MIT © codai