# KG-NINJA Discovery API

**Canonical:** https://apis.io/apis/kgninja-dev/kgninja-dev-discovery-api/  
**Provider:** KG-NINJA — https://apis.io/providers/kgninja-dev/  
**Base URL:** https://agent-economy.kgninja.dev/mcp  
**Documentation:** https://agent-economy.kgninja.dev/

KG-NINJA Discovery API is one of 10 APIs that [KG-NINJA](https://apis.io/providers/kgninja-dev/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Discovery. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a getting-started guide.

Machine-readable service discovery

## Operations (34)

| Method | Path | Summary |
|---|---|---|
| GET | `/` | Get the human- and agent-readable service index |
| GET | `/auth.md` | Get agent registration, anonymous-access, and x402 guidance |
| GET | `/.well-known/agent-card.json` | Get the A2A 1.0 Agent Card |
| GET | `/.well-known/openapi.json` | Get the OpenAPI document from a well-known alias |
| GET | `/server.json` | Get the official MCP Registry publication document |
| GET | `/mcp/server.json` | Get the MCP Registry publication document beside the MCP endpoint |
| GET | `/.well-known/mcp-registry-auth` | Get the optional MCP Registry HTTP domain-ownership proof |
| GET | `/docs/deterministic-json-verification` | Read the deterministic JSON verification guide |
| GET | `/docs/reproducible-x402-receipts` | Read the x402 receipt and signed-evidence guide |
| GET | `/docs/mcp-x402-interoperability` | Read the MCP and x402 interoperability guide |
| GET | `/docs/security-and-trust` | Read the security, privacy, and trust-boundary guide |
| GET | `/faq` | Read machine-indexable answers about scope, payment, and trust |
| GET | `/webmcp.js` | Get the feature-detected browser WebMCP bridge |
| GET | `/12ffcf699b4a1cecdfe4f30a0bc795705169b8c87d475a49.txt` | Get the IndexNow host-ownership key |
| GET | `/verification-recipes.json` | Get deterministic verification use-case recipes |
| GET | `/.well-known/verification-recipes.json` | Get verification recipes from the well-known alias |
| GET | `/.well-known/revenue-goal.json` | Get the revenue goal status from a well-known alias |
| GET | `/agent.json` | Get the product-specific agent service manifest |
| GET | `/.well-known/x402` | Get the self-hosted x402 convenience manifest |
| GET | `/.well-known/api-catalog` | Get the RFC 9727 API catalog |
| GET | `/.well-known/ai-catalog.json` | Discover the service and its decision-support entry points |
| GET | `/mcp/server-card` | Get the current experimental MCP Server Card |
| GET | `/.well-known/mcp/server-card.json` | Get the Cloudflare Agent Readiness MCP card |
| GET | `/.well-known/mcp.json` | Get the draft MCP Server Card compatibility alias |
| GET | `/.well-known/agent-skills/index.json` | Discover published Agent Skills |
| GET | `/.well-known/agent-skills/verify-json-evidence/SKILL.md` | Get the verify-json-evidence Agent Skill |
| GET | `/.well-known/jwks.json` | Get public keys for verification evidence |
| GET | `/llms.txt` | Get the compact LLM-oriented service index |
| GET | `/llms-full.txt` | Get complete LLM-oriented usage guidance |
| GET | `/index.md` | Get the canonical Markdown service guide |
| GET | `/icon.svg` | Get the service icon referenced by the MCP Server Card |
| GET | `/robots.txt` | Get crawler access policy and discovery hints |
| GET | `/sitemap.xml` | Get the public service discovery sitemap |
| GET | `/openapi.json` | Get this OpenAPI document |

## Machine-readable artifacts (7)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/kgninja-dev/refs/heads/main/openapi/kgninja-dev-discovery-api-openapi.yml
- **Documentation** — https://agent-economy.kgninja.dev/docs/deterministic-json-verification
- **APIReference** — https://agent-economy.kgninja.dev/openapi.json
- **GettingStarted** — https://agent-economy.kgninja.dev/index.md
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/kgninja-dev/refs/heads/main/conventions/kgninja-dev-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/kgninja-dev/refs/heads/main/errors/kgninja-dev-problem-types.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/kgninja-dev/refs/heads/main/data-model/kgninja-dev-data-model.yml

## Other KG-NINJA APIs (9)

- [Agent Verification Utility MCP Server](https://apis.io/apis/kgninja-dev/agent-verification-utility-mcp-server/)
- [Agent Verification Utility A2A Agent](https://apis.io/apis/kgninja-dev/agent-verification-utility-a2a-agent/)
- [KG-NINJA A2a API](https://apis.io/apis/kgninja-dev/kgninja-dev-a2a-api/)
- [KG-NINJA Decision Support API](https://apis.io/apis/kgninja-dev/kgninja-dev-decision-support-api/)
- [KG-NINJA Goals API](https://apis.io/apis/kgninja-dev/kgninja-dev-goals-api/)
- [KG-NINJA MCP API](https://apis.io/apis/kgninja-dev/kgninja-dev-mcp-api/)
- [KG-NINJA Operations API](https://apis.io/apis/kgninja-dev/kgninja-dev-operations-api/)
- [KG-NINJA Purchase API](https://apis.io/apis/kgninja-dev/kgninja-dev-purchase-api/)
- [KG-NINJA Registration API](https://apis.io/apis/kgninja-dev/kgninja-dev-registration-api/)

## Tags

Discovery

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