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isbndb.com
ISBNdb provides a database of book metadata searchable by ISBN, title, author, publisher, and subject. It offers subscription access to this catalog for developers and data users.
ISBNdb exposes authenticated REST HTTP APIs for book metadata: a current v2 API at `https://api2.isbndb.com` using an `Authorization` header API key, plus a legacy/discontinued v1 API documented with an OpenAPI spec and `x-api-key` header auth.
discovered 1d ago
REST · OpenAPI1
- ISBNdb APIdiscovered
Credentials
conventions · 0/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✗
/llms.txt - API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing