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Informations about the package prism-opentelemetry

Prism OpenTelemetry

OpenTelemetry bridge for Prism. It subscribes to Prism's neutral telemetry events and turns them into GenAI-convention spans — a root span per generation, child spans per step and per tool call, with token, cost, model, finish-reason and provider rate-limit attributes — exported over OTLP to Arize Phoenix or any OTLP backend.

Status: under active development, and this release needs an unreleased Prism. The bridge reads the provider rate limits off GenerationCompleted::$rateLimits, which core gained after v0.115.1, so the constraint is >=0.116 <1.0 and composer install stays red until Prism v0.116.0 is tagged. The field exists because quota headroom is not content: before it, a successful generation exported no rate limits at all unless the application had turned prompt capture on.

Working on this package? Read AGENTS.md first — the boundary this package has to hold, the gates that must be green, and the traps that have already caught someone. @link AGENTS.md

How it fits together

Prism core never depends on OpenTelemetry. This package owns the open-telemetry/* dependency and the GenAI attribute mapping, so semantic convention churn is a release of this package, not a change to Prism.

Installation

Enable Prism telemetry (in the Prism config or environment):

Point the OpenTelemetry SDK at your collector / Phoenix instance:

Configuration

Key Env Default Description
enabled PRISM_OTEL_ENABLED true Subscribe the span-building listener.
tracer_name PRISM_OTEL_TRACER_NAME prism Instrumentation scope name.
record_exceptions PRISM_OTEL_RECORD_EXCEPTIONS true Record the exception on failed spans.

Privacy

By default, spans carry metadata only: tokens, timing, model, finish reason and provider rate limits. Prompts, completions, tool arguments and tool results are added as input.value / output.value only when Prism's prism.telemetry.capture_content is on, and it is off by default. Each captured attribute is cut to content_max_length.

Attachment bytes are withheld even with content capture on. A captured message's images, documents, audio and video keep their kind, mime type, file id and filename, and their base64 is replaced by omitted_bytes, the size of what was left out. To export the bytes as well, set Prism's prism.telemetry.capture_media (PRISM_TELEMETRY_CAPTURE_MEDIA=true). Bytes a user pastes into a prompt as text are text, and are exported with the prompt.

License

MIT © Particle Academy

All versions of prism-opentelemetry with dependencies

PHP Build Version
Package Version
Requires php Version ^8.2
ext-json Version *
ext-mbstring Version *
illuminate/contracts Version ^12.0|^13.0
illuminate/support Version ^12.0|^13.0
open-telemetry/api Version ^1.0
open-telemetry/context Version ^1.0
particle-academy/prism Version >=0.124.1 <1.0
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