# Seltz

**Canonical:** https://apis.io/providers/seltz/  
**Website:** https://console.seltz.ai  
**APIs profiled:** 2

Seltz is a San Francisco-based AI infrastructure company building the web retrieval and knowledge layer for the agentic internet. Its Web Knowledge API gives LLMs, RAG pipelines, and autonomous agents real-time, context-engineered web data through a single call: POST /v1/search returns ranked, cleaned source documents, POST /v1/answer returns a direct RAG answer with citations, and an OpenAI-compatible /v1/chat/completions endpoint serves web-grounded chat. Rather than returning raw snippets like a traditional search API, Seltz shapes web content to maximize usefulness for machine reasoning. Founded in 2025 by Antonio Mallia (Amazon, Pinecone) and backed by Speedinvest and B Capital, Seltz ships official Python and TypeScript SDKs, a hosted MCP server, and integrations for OpenAI, Anthropic, Mistral, LlamaIndex, Agno, Langroid, Dify, n8n, and Zapier.

## Kin Score — 50.8 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 50.8).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 56.0 |
| Governance | 11.5 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 64.7 |
| Commercial Clarity | 60.5 |

## Agent readiness — 34.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | yes |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| 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 (2)

- **Seltz answer API** — Answer operations
- **Seltz search API** — Search operations

## MCP servers (1)

- **seltz-mcp.yml**

## Security (3)

- **Seltz Authentication** — apiKey · 2 schemes
- **Seltz Domain Security** — TLSv1.3 · HSTS · DMARC
- **Seltz Trust Center** — trust center published

## Tags

Company, Web Search, AI Infrastructure, Retrieval, RAG, Agents, LLM, Knowledge API, Developer Tools, MCP

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