# Marginalia Search

**Canonical:** https://apis.io/providers/marginalia-search/  
**Website:** https://marginalia-search.com/  
**APIs profiled:** 2

Marginalia Search is an independent search engine focused on non-commercial content. Its API is accessible through api2.marginalia-search.com (current) and the legacy api.marginalia.nu / api.marginalia-search.com endpoints, and allows developers to perform web searches against the Marginalia index.

## Kin Score — 26.6 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 26.6).

| Facet | Score |
|---|---|
| Discoverability | 59.3 |
| Contract Quality | 55.1 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 19.8 (agent-aware)

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

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (2)

- **Marginalia Search Filters API** — Manage named search filters (new API only).
- **Marginalia Search Search API** — Search the Marginalia index.

## Agentic access (1)

- **Marginalia Search Agentic Access** — 5 operations · 2 acting

## Security (2)

- **Marginalia Search Authentication** — apiKey · 1 scheme
- **Marginalia Search Domain Security** — TLSv1.3 · DNSSEC · DMARC

## Plans (1)

- **Marginalia Search Plans Pricing**

## Tags

Open-Source, Search, Web Search

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