> ## Documentation Index
> Fetch the complete documentation index at: https://arizeai-433a7140.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 04.20.2026 Span Attribute Filtering, CLI Notes, and Claude Opus 4.7

> Filter spans by attributes across Python, TypeScript, REST, and CLI; add notes to spans via `px span add-note`; use Claude Opus 4.7 in the Playground.

# Span Attribute Filtering

April 20, 2026

**Available in arize-phoenix 14.9.0+ (server), arize-phoenix-client 2.4.0+ (Python), @arizeai/phoenix-client 6.7.0+ (TypeScript)**

Filter spans by stored attribute values when calling `GET /v1/projects/{project_identifier}/spans`. Multiple `attribute=key:value` pairs are AND-ed together. The value's type determines how the stored attribute is matched — passing an integer matches a stored integer; passing a string matches a stored string — so `user.id: 12345` (int) and `user.id: "12345"` (string) are distinct filters.

**Python**

```python theme={null}
from phoenix.client import Client

client = Client()
spans = client.spans.get_spans(
    project_identifier="my-project",
    attributes={
        "llm.model_name": "gpt-4o",
        "metadata.tier": "premium",
    },
)
```

**TypeScript**

```typescript theme={null}
import { createClient } from "@arizeai/phoenix-client";
import { getSpans } from "@arizeai/phoenix-client/spans";

const client = createClient();
const result = await getSpans({
  client,
  project: { projectName: "my-project" },
  attributes: {
    "llm.model_name": "gpt-4o",
    "metadata.tier": "premium",
  },
});
```

**REST**

```http theme={null}
GET /v1/projects/my-project/spans?attribute=llm.model_name:gpt-4o&attribute=metadata.tier:premium
```

**CLI**

```bash theme={null}
px span list --project my-project \
  --attribute "llm.model_name:gpt-4o" \
  --attribute "metadata.tier:premium"
```

* **Type-aware matching** — `str`, `int`, `float`, and `bool` values each select a distinct storage type; an integer query (`1`) also matches whole-number floats in storage (`1.0`)
* **Forced-string matching** — wrap a numeric-looking string in quotes: `user.id:"12345"` (URL-encoded `%2212345%22`); the Python and TypeScript clients handle this automatically
* **Colon-in-value** is supported — split is on the first `:` only, so `session.id:sess:abc:123` works without escaping
* **AND semantics** — repeat the parameter or add multiple entries to the map to require all conditions

# CLI Span Notes

April 20, 2026

**Available in @arizeai/phoenix-cli 1.1.0+**

Add free-text notes to spans from the terminal with `px span add-note`. Pass `--include-notes` to `px span list` or `px trace get` to read notes back alongside span data.

```bash theme={null}
# Attach a note to a span
px span add-note <span-id> --text "Reviewed manually — output looks correct."

# List spans with their notes
px span list --include-notes

# Fetch a trace with span notes
px trace get <trace-id> --include-notes
```

Notes are stored separately from annotations. When you pass `--include-annotations`, note entries are excluded from that output — use `--include-notes` to fetch them explicitly.

# Claude Opus 4.7 in the Playground

April 20, 2026

**Available in arize-phoenix 14.9.0+**

Claude Opus 4.7 is now available as a model option in the Phoenix Playground. Select it from the model picker to compare outputs against other Anthropic and cross-provider models.