Metadata-Version: 2.4
Name: metergraph
Version: 0.4.0
Summary: Fire-and-forget LLM spend capture for Metergraph
Author: Pioneer Square Labs
License-Expression: Apache-2.0
Project-URL: Homepage, https://www.metergraph.dev/
Project-URL: Repository, https://github.com/PioneerSquareLabs/metergraphsdk
Project-URL: Issues, https://github.com/PioneerSquareLabs/metergraphsdk/issues
Keywords: llm,observability,openai,anthropic,gemini,vercel-ai-gateway,cost-tracking
Classifier: Intended Audience :: Developers
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Typing :: Typed
Requires-Python: >=3.10
Description-Content-Type: text/markdown
Provides-Extra: dev
Requires-Dist: pytest>=8; extra == "dev"
Requires-Dist: openai>=2.50.0; extra == "dev"
Requires-Dist: anthropic>=0.40; extra == "dev"
Requires-Dist: google-genai>=1; extra == "dev"

# metergraph (Python)

Zero-runtime-dependency capture for OpenAI, Anthropic, Gemini, and Python
Vercel AI Gateway clients.
`wrap()` initializes capture from the environment, so setup is one line per
client; call `metergraph.init(...)` before the first `wrap()` only to pass
options in code.

```python
import metergraph
from openai import OpenAI

# Anthropic() and google-genai's genai.Client() wrap the same way.
client = metergraph.wrap(OpenAI())
metergraph.set_session("ticket-123")

with metergraph.trace("ticket-workflow"):
    with metergraph.route("ticket-classifier", unit="answer"):
        model = metergraph.model_for("ticket-classifier", default="gpt-4.1-mini")
        client.chat.completions.create(model=model, messages=[...])

# Emit this after the user-visible task resolves. It shares the bounded async
# transport and contains no prompt or output content.
metergraph.record_outcome(
    "ticket-classifier",
    model=model,
    task_completed=True,
    feedback_score=1,
    turns_to_resolution=2,
    escalated=False,
)
```

Vercel's supported Python surface is AI Gateway through the OpenAI or
Anthropic SDK. Point either client at the public gateway and `wrap()` detects
it automatically:

```python
import os
import metergraph
from openai import OpenAI

gateway = metergraph.wrap(OpenAI(
    api_key=os.getenv("AI_GATEWAY_API_KEY") or os.getenv("VERCEL_OIDC_TOKEN"),
    base_url="https://ai-gateway.vercel.sh/v1",
))

gateway.chat.completions.create(
    model="anthropic/claude-sonnet-4.6",
    messages=[{"role": "user", "content": "Hello"}],
)
```

Creator-qualified model IDs are normalized for gateway catalog pricing. Sync,
async, streaming, tool calls, and OpenAI Responses API calls are captured. Use
`metergraph.wrap(client, provider="vercel")` only when a compatible client is
behind a custom gateway URL that cannot be detected automatically.

Configuration:

- `METERGRAPH_APP_TOKEN` — required bearer token
- `METERGRAPH_INGEST_URL` — optional override; defaults to the hosted HTTPS endpoint
- `METERGRAPH_CAPTURE_TEXT=0` — opt out of content capture globally
- `METERGRAPH_DISABLED=1` — process kill switch
- `METERGRAPH_QUEUE_SIZE`, `METERGRAPH_BATCH_SIZE`, `METERGRAPH_FLUSH_SECONDS`

SDK 0.4 associates traces with their GitHub repository automatically. On the
first `init()` in a Git checkout, it reads the `origin` remote and creates
`.metergraph/config.json` at the repository root if that file is absent.
Commit this non-secret file so production can use repository-aware ingest
without Git metadata. An existing file is authoritative and is never changed
by the SDK. If discovery or creation is unavailable, ingest remains compatible
with protocol v1.

Delivery is bounded and off the request path. Queue overflow or a collector
outage drops capture and increments internal counters; it never changes the
provider call. Each wire batch is bounded to 512 KiB after optional gzip.
SDK 0.4 captures the scrubbed provider request and a normalized response
envelope, including assistant content and tool calls, by default. Provider
credentials and transport headers are removed. Request and response are each
limited to 100 KiB of UTF-8 with an explicit truncation marker.
`capture_text=False` on `route()` or `trace()` overrides the global content
policy for a sensitive operation. The equivalent initialization option is
`metergraph.init(capture_text=False)`. The public open-source server continues
to discard content even when the SDK sends it; the hosted dashboard retains
content under the workspace retention period.

`metergraph.trace(name, trace_id=..., parent_span_id=...)` is a sync/async
context manager and decorator. Calls inside one trace share a trace ID and
receive distinct span IDs. Calls outside a trace become deterministic
single-span traces after ingestion. Manual IDs can join work across process
boundaries; automatic W3C HTTP propagation is not included.

Config reads are ETag-aware and fail open to the default model.
`record_outcome` requires a stable session ID and the model actually used so a
session-sticky canary can compare task completion and optional feedback,
turn-count, escalation, abandonment, edit-distance, and regeneration signals.

OpenAI Batch API output JSONL is captured per inference when a wrapped
`client.files.content()` / `retrieve_content()` result is read. Anthropic
message batches are captured per inference while iterating a wrapped
`client.messages.batches.results()` result. Run result consumption inside a
`route()` context so the asynchronous batch retains its product route. Batch
rows carry real per-result usage and the batch pricing flag; job-management
polls themselves are not miscounted as model calls.

## Set up with an AI coding agent

Paste this into Claude Code, Codex, Cursor, or any coding agent inside the
codebase you want instrumented:

```text
Instrument this codebase's LLM API costs with the `metergraph` PyPI package
(https://github.com/PioneerSquareLabs/metergraphsdk): pip install metergraph,
then wrap every OpenAI()/AsyncOpenAI(), Anthropic()/AsyncAnthropic(), and
genai.Client() construction in place, e.g. client = metergraph.wrap(OpenAI()).
OpenAI or Anthropic clients pointed at https://ai-gateway.vercel.sh are Vercel
AI Gateway clients and are detected automatically; keep their creator/model ID
and AI_GATEWAY_API_KEY / VERCEL_OIDC_TOKEN configuration unchanged.
wrap() returns the same client and initializes itself from the environment:
METERGRAPH_APP_TOKEN is required (capture is silently off without it) and
METERGRAPH_INGEST_URL is only for self-hosted servers. Add both to
.env.example, and never commit a real token. SDK 0.4 captures scrubbed provider
requests and normalized responses by default for the hosted dashboard; use
METERGRAPH_CAPTURE_TEXT=0 or capture_text=False around sensitive operations.
Provider credentials and transport headers must never be captured. Capture is
fail-open, so do not change call sites, arguments, or error handling; sync,
async, and streaming work unchanged. Use metergraph.trace("stable-name") to
group multi-call workflows. Attribution to the calling function is automatic;
optionally pin stable names on key LLM-calling functions with
@metergraph.track. On
serverless, call metergraph.flush() before the handler returns. When done,
list every client you wrapped and flag LLM calls made outside the official
openai / anthropic / google-genai SDKs, since those are not captured.
```
