# signalaf-com

**Canonical:** https://apis.io/providers/signalaf-com/  
**Website:** https://signalaf.com/  
**APIs profiled:** 1

SignalAF (legal name Ello Cello LLC) provides the SigRank AI leaderboard platform that ranks AI operators by Yield, a metric combining cache reads, output and input efficiency. The service offers a public REST API with OpenAPI 3.0 specification, authentication via Supabase OAuth and API keys, rate‑limit policies, error handling with RFC 9457 problem details, versioned endpoints under /api/v1, and extensive developer documentation hosted at https://signalaf.com/developers. The organization is based in Buffalo, NY, and maintains open‑source SDKs and tools.

## Kin Score — 53.0 / 100 (developing)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 65.0 |
| Contract Quality | 55.4 |
| Contract Governance | 35.6 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 70.7 |
| Access Clarity | 44.7 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 31.8 (matched via fallback).

## Agent readiness — 45.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | unknown |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | near-conformant |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | no |
| Agentic Commerce | self |
| Pagination Ratio | no |
| Operation Distinctiveness | distinct |

## APIs (4)

- **signalaf-com Hall API** — The hall API from signalaf-com — 1 operation(s) for hall.
- **signalaf-com Leaderboard API** — The leaderboard API from signalaf-com — 1 operation(s) for leaderboard.
- **signalaf-com Metrics API** — The metrics API from signalaf-com — 1 operation(s) for metrics.
- **signalaf-com Operators API** — The operators API from signalaf-com — 2 operation(s) for operators.

## MCP servers (1)

- **signalaf-com MCP Server** — Remote MCP server at signalaf.com.

## Agentic access (1)

- **Signalaf Com Agentic Access** — 5 operations

## Security (2)

- **Signalaf Com Authentication** — 1 scheme
- **Signalaf Com Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Signalaf Com Plans Pricing**

## Tags

AI, Analytics, Leaderboard, OpenAPI, PublicAPI

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