# Polar Signals

**Canonical:** https://apis.io/providers/polar-signals/  
**Website:** https://www.polarsignals.com  
**APIs profiled:** 1

Polar Signals is a continuous profiling company built by the team behind the open-source Parca project. Its Polar Signals Cloud product uses eBPF to continuously profile CPU, memory, and NVIDIA GPU workloads across Kubernetes, Docker, ECS, and bare metal with under 1% overhead and no code changes, storing profiles in the open-source FrostDB columnar database and querying them with Prometheus-style label selectors and PromQL. It exposes a gRPC/Connect API (published at buf.build/polarsignals/api) for managing organizations, projects, service accounts, roles, RBAC, and billing; a Parca-compatible profiling data plane at grpc.polarsignals.com; a hosted MCP server for AI-assisted performance analysis; language agents and SDKs for Go, Rust, Python, Node.js, JVM, .NET, PHP, Ruby and more; and the psctl CLI.

## Kin Score — 42.9 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 42.9).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 28.2 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 66.1 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

## Agent readiness — 35.3 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | verified |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **Polar Signals Cloud API** — gRPC/Connect API for managing Polar Signals Cloud organizations, projects, service accounts, tokens, roles/RBAC, rate limits, and billing, plus a Parca-compatible profiling data...

## MCP servers (1)

- **Polar Signals MCP Server** — Official Model Context Protocol server that lets AI assistants (Claude, Cursor, Copilot, Gemini) query Polar Signals continuous-profiling data using natural language, discover p...

## Security (4)

- **Polar Signals Authentication** — http/oauth2/openIdConnect · 3 schemes
- **Polar Signals Domain Security** — TLSv1.3 · HSTS · DMARC
- **Polar Signals Vulnerability Disclosure** — Hackerone · contact published
- **Polar Signals Trust Center** — SOC 2 Type II

## Tags

Company, Enterprise, Observability, Continuous Profiling, Performance, eBPF, gRPC, Developer Tools, MCP, GPU

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/polar-signals/). Scores are computed from the provider's own public artifacts under a published rubric.