# kimetsu.dev Agent Gateway

**Canonical:** https://apis.io/apis/kimetsu-dev/agent-gateway/  
**Provider:** Kimetsu — https://apis.io/providers/kimetsu-dev/  
**Base URL:** https://agents.kimetsu.dev  
**Documentation:** https://kimetsu.dev/projects/

kimetsu.dev Agent Gateway is one of 3 APIs that [Kimetsu](https://apis.io/providers/kimetsu-dev/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 1 JSON Schema definition. Tagged areas include Agent Discovery, AI Agents, Open Source, and Public Goods. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, authentication docs, rate-limit docs, and 1 JSON Schema.

Credential-free, read-only JSON discovery API on agents.kimetsu.dev (OpenAPI 3.1.0, 15 operations): the gateway directory, llms.txt, robots.txt, the OpenAPI itself, the well-known directory pointer, the A2A card (canonical and legacy paths), a health route, the project directory and the sanitized Sidequest Commons feeds (participation gateway with quotas and GitHub action endpoints, proposals, winners, contribution passports), plus one POST — the A2A JSON-RPC guidance endpoint. Rejects credentials (400) and query strings (400); writes return 405.

## Operations (15)

| Method | Path | Summary |
|---|---|---|
| GET | `/` | Get agent gateway |
| GET | `/agent-gateway.json` | Get agent gateway alias |
| GET | `/llms.txt` | Get LLM discovery guide |
| GET | `/robots.txt` | Get crawler policy |
| GET | `/openapi.json` | Get OpenAPI document |
| GET | `/.well-known/kimetsu-agents.json` | Get well known directory |
| GET | `/.well-known/agent-card.json` | Get A2A Agent Card |
| GET | `/.well-known/agent.json` | Get legacy A2A Agent Card |
| GET | `/health` | Get service health |
| GET | `/v1/projects` | List projects |
| GET | `/v1/sidequest` | Get Sidequest gateway |
| GET | `/v1/sidequest/proposals` | List Sidequest proposals |
| GET | `/v1/sidequest/winners` | List Sidequest winners |
| GET | `/v1/sidequest/agents` | List Sidequest agents |
| POST | `/a2a/sidequest` | Request Sidequest guidance |

## Machine-readable artifacts (14)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/openapi/kimetsu-dev-agent-gateway-openapi.yml
- **OpenAPI** — https://agents.kimetsu.dev/openapi.json
- **Documentation** — https://kimetsu.dev/projects/
- **APIReference** — https://agents.kimetsu.dev/openapi.json
- **LLMsTxt** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/llms/kimetsu-dev-agent-gateway-llms.txt
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/overlays/kimetsu-dev-agent-gateway-overlay.yaml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/arazzo/kimetsu-dev-discover-and-ask-workflow.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/errors/kimetsu-dev-problem-types.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/authentication/kimetsu-dev-authentication.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/rate-limits/kimetsu-dev-rate-limits.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/data-model/kimetsu-dev-data-model.yml
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/json-schema/kimetsu-dev-agent-directory-v1.schema.json
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/apis.yml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/kimetsu-dev/refs/heads/main/arazzo/_index.yml

## Other Kimetsu APIs (2)

- [Sidequest Commons Guide (A2A)](https://apis.io/apis/kimetsu-dev/sidequest-commons-guide/)
- [Kimetsu MCP Server (local stdio)](https://apis.io/apis/kimetsu-dev/kimetsu-mcp-server/)

## Tags

Agent Discovery, AI Agents, Open Source, Public Goods

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/kimetsu-dev/agent-gateway/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/kimetsu-dev/.