ptm-client 0.8.0

Lightweight PTM API client for integration with external Python services

ptm-client

Lightweight Python client for the Prompt Test Manager (PTM) API. Single runtime dependency: requests.

Install

pip install ptm-client

Quick start

from ptm_client import PTMClient

client = PTMClient(base_url="https://ptm.example.com", token="your-api-token")

# List prompts, filtered by tag
prompts = client.list_prompts(tag="my_team")

# Fetch a prompt and its test cases
detail = client.get_prompt("my_team.summarizer")
tests = client.get_prompt_tests("my_team.summarizer")

# Run an eval against the library prompt
run = client.run_eval(
    prompt_ids=["my_team.summarizer"],
    provider_ids=["openai_gpt41_mini"],
)

# Or run a one-off manual eval
run = client.run_manual_eval({
    "prompt_text": "Summarize: {{text}}",
    "tests": [{"description": "smoke", "vars": {"text": "Hello, world."}}],
    "provider_profiles": ["openai_gpt41_mini"],
})

# Block until complete, then fetch a report
result = client.wait_for_run(run["run_key"], timeout=120)
html = client.run_report(run["run_key"])
json_report = client.run_report(run["run_key"], format="json")

Constructor

PTMClient(base_url, token, timeout=30, *, verify_ssl=None)

token is a PTM personal access token or service account token. timeout is the HTTP request timeout in seconds.

verify_ssl controls TLS certificate verification. When None (the default), the value is read from the PTM_SSL_VERIFY environment variable, which defaults to true. Set PTM_SSL_VERIFY=false (or pass verify_ssl=False) to allow self-signed or otherwise invalid certificates - intended for local dev against a homelab PTM instance, never for production. The matching urllib3.InsecureRequestWarning is silenced when verification is disabled.

Public methods

Prompts

• list_prompts(tag=None, team=None, service=None, source=None, search=None, group=None)
• get_prompt(prompt_id)
• get_prompt_tests(prompt_id)
• list_prompt_versions(prompt_id) (v0.3.0)
• get_prompt_version(prompt_id, version_number) (v0.3.0)

Providers

• list_providers()

Evaluations

• run_eval(prompt_ids, provider_ids, **kwargs)
• run_manual_eval(payload)
• run_prompt_eval(prompt_id, provider_ids, *, inject_vars=None, extra_tests=None, visibility_scope="org_visible", label=None)

Runs

• list_runs(limit=50, terminal_only=False, mine_only=False) (v0.3.0)
• get_run(run_key)
• wait_for_run(run_key, timeout=300, poll_interval=5)
• run_report(run_key, format="html") - html / json / markdown / csv

Optimization (v0.3.0)

• submit_optimization(prompt_id, provider_profiles=None, judge_profile=None, max_cycles=10, target_score=90.0, min_improvement=2.0, max_cost_usd=20.0, comparison_strategy=None, visibility_scope=None, *, stability_samples=None, validation_samples=None, flakiness_threshold=None, min_consistent_improvement=None, variance_aware_mutator=None, variance_signal=None, enforce_target_score=None) (variance-aware fields added in v0.6.0; omit to inherit server admin defaults)
• optimize_prompt(...) - deprecated alias for submit_optimization; emits DeprecationWarning; removed in v1.0.0
• get_optimization_status(prompt_id)
• get_optimization_history(prompt_id)
• get_optimization_detail(optimization_id) (v0.3.0)
• cancel_optimization(optimization_id)
• wait_for_optimization(prompt_id, *, timeout=600, poll_interval=10)

Test-case shapes

PTM evaluates with three optional scoring layers. Use any combination.

Promptfoo assertions (deterministic)

Go in the assert array inside each test case:

{
    "description": "mention the topic with enough length",
    "vars": {"transcript": "..."},
    "assert": [
        {"type": "icontains", "value": "API migration"},
        {"type": "javascript", "value": "output.length >= 100"},
    ],
}

DeepEval metrics (semantic, judge-LLM)

Go in additional_metrics at the payload root:

{
    "additional_metrics": [
        {"name": "relevance", "criteria": "Output addresses the input topic.", "threshold": 0.7},
    ],
    "judge_profile": "openai_gpt41_mini",
}

KPI configs (custom weighted expressions)

Go in additional_kpis at the payload root:

{
    "additional_kpis": [
        {"name": "cost_ok", "description": "Under $0.05", "expression": "1 if cost < 0.05 else 0", "weight": 1.0},
    ],
}

Inline examples

run_manual_eval - full control

run = client.run_manual_eval({
    "label": "my_custom_eval",
    "prompt_text": "Summarize: {{text}}",
    "tests": [{"description": "short text", "vars": {"text": "The quick brown fox."}}],
    "provider_profiles": ["openai_gpt41_mini"],
    "cost_threshold": 1.0,
    "latency_threshold_ms": 30000,
})

run_prompt_eval - fetch from PTM + inject live data

run = client.run_prompt_eval(
    prompt_id="my_team.summarizer",
    provider_ids=["openai_gpt41_mini"],
    inject_vars={"transcript": real_transcript, "meeting_title": "Weekly 1:1"},
)
result = client.wait_for_run(run["run_key"], timeout=120)

Error handling

from ptm_client import PTMClient, PTMError, PTMTimeoutError

try:
    result = client.wait_for_run(run_key, timeout=60)
except PTMTimeoutError:
    print("Run did not complete in time")
except PTMError as e:
    print(f"PTM API error ({e.status_code}): {e}")

PTMError wraps all HTTP errors, ConnectionError, and requests.Timeout. Check e.status_code (0 for connection/timeout failures).

Compatibility

• Python 3.12+
• PTM backend compatible (some v0.3.0 methods require a recent backend release for full functionality; older backends work for all other methods)