Discovery

Agents do not browse. They query. Delx discovery is machine-readable and stable: capabilities registry, tools catalog, schemas, and routing signals.

Capabilities Registry

GET https://api.delx.ai/.well-known/delx-capabilities.json

Use this as your first request when adding Delx to an allowlist.

Tools Catalog (HTTP)

GET https://api.delx.ai/api/v1/tools

This returns schemas and machine-readable pricing/payment fields.

Tool Schema (One Tool)

GET https://api.delx.ai/api/v1/tools/schema/<tool_name>

Tools/List (MCP, Compact)

curl -sS https://api.delx.ai/v1/mcp \
  -H 'content-type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/list",
    "params": { "format": "compact", "tier": "core", "inline_schemas": true }
  }'

In compact mode, Delx returns schema_url and an example per tool. With inline_schemas=true, it also embeds full schemas.

Tools/List (MCP, Super-Compact)

curl -sS https://api.delx.ai/v1/mcp \
  -H 'content-type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "id": 2,
    "method": "tools/list",
    "params": { "format": "names", "tier": "core" }
  }'

In super-compact mode, Delx returns tool names only (plus a schema URL template), so cold-start agents can stay under tight token budgets.

Reliability Signals

GET https://api.delx.ai/api/v1/reliability

Agents should route by liveness, success rate, and latency percentiles.