Previous value: -"How the interface is actually reached, max 500 chars. For category 'api' the base URL (https://api.example.com/v1); for 'mcp' the server URL (https://example.com/mcp) or stdio command; for 'cli' the install-and-run command (npx example-cli). Must be reachable: it is probed every 6 hours and a dead endpoint loses its reliability score."New value: +"How the interface is actually reached, max 500 chars. For category 'api' the base URL (https://api.example.com/v1); for 'mcp' the server URL (https://example.com/mcp) or stdio command; for 'cli' the install-and-run command (npx example-cli). Must be reachable: it is probed daily and a dead endpoint loses its reliability score."

Previous value: -"^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"New value: +"^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"

Previous value: -"e.g. 'Bearer API key', 'OAuth 2.1', 'none'."New value: +"How a caller authenticates, in a few words: 'none', 'Bearer API key', 'API key in query', 'OAuth 2.1', 'Basic auth'. Write 'none' rather than leaving it vague; auth_params carries the individual credentials."

Added value: +"Up to 10 individual credentials the caller must supply, each {name, location, required}. Leave empty when auth_mode is 'none'. Never include credential values here, only their names."

Previous value: -"header | query | env | flag"New value: +"Where the credential goes: 'header', 'query', 'env' (CLI/MCP environment variable) or 'flag' (CLI argument)."

Added value: +"Exact credential name as sent, e.g. 'Authorization' or 'api_key'."

Added value: +"False only when the call also works without this credential. Defaults to true."

Previous value: -"Machine-matchable verbs, e.g. ['send-email','list-templates']."New value: +"Up to 12 lowercase hyphenated verbs an agent's need is matched against, e.g. ['send-email','list-templates','verify-address']. This is the single field that drives discovery: an entry with no capabilities is rarely returned. One action per item, 2-40 chars, no sentences."

Added value: +"Which layer this interface belongs to: 'api' for an HTTP contract called directly, 'mcp' for a Model Context Protocol tool server, 'cli' for a command-line surface. Decides how endpoint is interpreted (URL vs command)."

Added value: +"Optional long form, max 4000 chars: what the interface does well, notable limits, quirks an agent should know before calling. Plain text; no HTML."

Added value: +"Absolute https URL of the developer documentation (not the marketing home page). Omit if none exists; submissions without it are approved more slowly."

Previous value: -"Base URL, MCP URL or command."New value: +"How the interface is actually reached, max 500 chars. For category 'api' the base URL (https://api.example.com/v1); for 'mcp' the server URL (https://example.com/mcp) or stdio command; for 'cli' the install-and-run command (npx example-cli). Must be reachable: it is probed every 6 hours and a dead endpoint loses its reliability score."

Added value: +"MIME type or shape the interface accepts, e.g. 'application/json', 'multipart/form-data', 'command-line flags'. Empty string when not applicable."

Added value: +"One copy-pasteable call that works: a curl command, a JSON-RPC body or a CLI line, max 1000 chars. Never include a real credential — use a placeholder such as $API_KEY. This is what reviewers check first."

Added value: +"Public product name as its vendor spells it, 1-80 chars, e.g. 'Resend' or 'GitHub MCP Server'. Do not add the category or a tagline here; the slug is derived from this name plus the category."

Added value: +"MIME type or shape the interface returns, e.g. 'application/json', 'text/csv', 'stdout text'. Empty string when not applicable."

Added value: +"Cost in one short phrase, e.g. 'Free', 'Free tier then $20/month', 'Usage-based, $0.001/call'. Agents filter on this, so be concrete."

Added value: +"Published quota in the vendor's own words, e.g. '100 requests/minute', '10k calls/month on the free tier'. Leave empty rather than guessing."

Previous value: -"One line: what it does."New value: +"One line an agent can rank on: what the interface does, 10-300 chars. State the capability, not the marketing (e.g. 'Send transactional email over HTTP with templates and delivery webhooks')."

Added value: +"Up to 8 short domain labels for browsing, e.g. ['email','messaging']. Domains, not actions — actions belong in capabilities[]."

Added value: +{
+  "description": "Optional. Where to email the moderation decision (approved or rejected, with the reason). Never published, never shared.",
+  "format": "email",
+  "maxLength": 200,
+  "pattern": "^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
+  "type": "string"
+}