diff --git a/README.md b/README.md
index 38e3ede..c5b791c 100644
--- a/README.md
+++ b/README.md
@@ -64,53 +64,19 @@ make docker CHECKER_VERSION=1.2.3
 
 Set the `endpoint` admin option for the SRV checker to the URL of the running checker-srv server (e.g., `http://checker-srv:8080`). happyDomain will delegate observation collection to this endpoint.
 
-## Protocol
+## Rules
 
-### POST /collect
-
-Request:
-```json
-{
-  "key": "srv_records",
-  "target": {"userId": "...", "domainId": "...", "serviceId": "..."},
-  "options": {
-    "service": {"_svctype": "svcs.UnknownSRV", "Service": {"srv": [ /* dns.SRV records */ ]}},
-    "subdomain": "_sip._tcp",
-    "domain": "example.com",
-    "tcpTimeout": 3000,
-    "udpTimeout": 2000
-  }
-}
-```
-
-Response:
-```json
-{
-  "data": {
-    "serviceDomain": "_sip._tcp.example.com",
-    "records": [
-      {
-        "service": "sip",
-        "proto": "tcp",
-        "owner": "_sip._tcp.example.com",
-        "target": "sip1.example.com",
-        "port": 5061,
-        "priority": 10,
-        "weight": 20,
-        "addresses": ["203.0.113.5"],
-        "probes": [
-          {
-            "address": "203.0.113.5:5061",
-            "proto": "tcp",
-            "connected": true,
-            "latencyMs": 12.4
-          }
-        ]
-      }
-    ]
-  }
-}
-```
+| Code                          | Description                                                                                       | Severity            |
+|-------------------------------|---------------------------------------------------------------------------------------------------|---------------------|
+| `srv_records_present`         | At least one SRV record is published for this service.                                            | CRITICAL            |
+| `srv_null_target`             | Detects SRV records with target `.`, signaling the service is intentionally not available.        | WARNING             |
+| `srv_target_not_cname`        | RFC 2782: SRV targets must resolve directly to A/AAAA, not through a CNAME.                       | WARNING             |
+| `srv_targets_resolve`         | Every SRV target resolves to at least one A/AAAA address.                                         | CRITICAL            |
+| `srv_port_valid`              | SRV records advertise a non-zero port that clients can actually connect to.                       | CRITICAL            |
+| `srv_priority_weight_sanity`  | Priority/weight values follow RFC 2782 conventions (failover present, weights meaningful).        | WARNING             |
+| `srv_tcp_reachable`           | Every TCP SRV `target:port` accepts a TCP connection.                                             | CRITICAL            |
+| `srv_udp_reachable`           | UDP SRV targets do not return ICMP port-unreachable.                                              | WARNING             |
+| `srv_redundancy`              | At least two distinct SRV targets exist (avoids single point of failure).                         | INFO                |
 
 ## Discovered TLS endpoints
 
@@ -132,18 +98,6 @@ so that the TLS checker can probe the targets without re-parsing SRV data:
 Null targets (`.`) and unknown service names are skipped. SNI is set to
 the SRV target hostname.
 
-## Rules
-
-| Name | Description |
-|---|---|
-| `srv_records_present` | At least one SRV record is published. |
-| `srv_null_target` | Detects `"."` targets (RFC 2782, service intentionally unavailable). |
-| `srv_target_not_cname` | Warns when an SRV target is a CNAME (RFC 2782 violation). |
-| `srv_targets_resolve` | Every target resolves to at least one A/AAAA. |
-| `srv_tcp_reachable` | Every `_tcp` SRV `target:port` accepts a TCP connection. |
-| `srv_udp_reachable` | UDP targets do not return ICMP port-unreachable. |
-| `srv_redundancy` | At least two distinct targets exist (no single point of failure). |
-
 ## License & licensing roadmap
 
 This project is currently licensed under the **GNU Affero General Public