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# © 2026 Lutar, Stephen P. — SZL Holdings · Doctrine v11 · Perplexity Computer Agent.
"""a11oy security / governed-AI live data connectors (P0, keyless → CONNECTED now).
cisa_kev CISA Known Exploited Vulnerabilities (public domain, keyless)
nvd_cve NVD CVE 2.0 (keyless; key optional → rate)
epss FIRST EPSS exploit-prediction scores (keyless) https://www.first.org/epss/api
mitre_attack MITRE ATT&CK enterprise STIX (vendored 0-CDN + online src)
github GitHub public API (anon 60/hr; token → 5000/hr)
All reuse the proven szl_a11oy_live_feeds honest-state pattern: server-side
single egress, brief TTL cache, labelled live + source_status. NEVER fabricated.
"""
from __future__ import annotations
import time
from typing import Any
from ..base import Connector, Records, State, http_json, http_text, _now
from ..registry import register
_CACHE: dict[str, tuple[float, Any]] = {}
def _cached(key: str, ttl: float):
hit = _CACHE.get(key)
if hit and (time.time() - hit[0]) < ttl:
return hit[1]
return None
def _put(key: str, val: Any):
_CACHE[key] = (time.time(), val)
# ── CISA KEV ───────────────────────────────────────────────────────────────
@register
class CisaKevConnector(Connector):
id = "cisa_kev"
label = "CISA Known Exploited Vulnerabilities"
category = "vuln"
auth_kind = "none"
free_tier = True
provider_base = "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json"
docs_url = "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
schema_preview = ["cveID", "vendorProject", "product", "vulnerabilityName", "dateAdded", "knownRansomwareCampaignUse"]
# raw.githubusercontent mirror (not rate-limited) as fallback source
_mirror = "https://raw.githubusercontent.com/cisagov/kev-data/develop/known_exploited_vulnerabilities.json"
def _probe(self):
st, _ = http_json(self.provider_base)
return (st == 200), (f"CISA KEV feed HTTP {st}")
def read(self, query: dict | None = None) -> Records:
limit = int((query or {}).get("limit", 25))
ck = f"kev:{limit}"
c = _cached(ck, 900)
if c:
return c
st, raw = http_json(self.provider_base)
if st != 200 or not isinstance(raw, dict):
st, raw = http_json(self._mirror)
if isinstance(raw, dict) and raw.get("vulnerabilities"):
vulns = sorted(raw["vulnerabilities"], key=lambda x: x.get("dateAdded", ""), reverse=True)
items = [{k: v.get(k) for k in self.schema_preview} for v in vulns[:limit]]
r = Records(connector_id=self.id, category=self.category, state=State.CONNECTED,
records=items, source="CISA KEV (public domain)", live=True,
note=f"live · catalog v{raw.get('catalogVersion','?')} · {raw.get('count','?')} total",
schema_preview=self.schema_preview)
_put(ck, r)
return r
return self._ready_records(f"CISA KEV unreachable (HTTP {st})")
# ── NVD CVE 2.0 ──────────────────────────────────────────────────────────────
@register
class NvdCveConnector(Connector):
id = "nvd_cve"
label = "NVD CVE 2.0 (NIST)"
category = "vuln"
auth_kind = "none" # key optional for higher rate
free_tier = True
provider_base = "https://services.nvd.nist.gov/rest/json/cves/2.0"
docs_url = "https://nvd.nist.gov/developers/vulnerabilities"
schema_preview = ["id", "severity", "cvss", "published", "desc"]
def _probe(self):
st, _ = http_json(self.provider_base + "?resultsPerPage=1")
return (st == 200), f"NVD 2.0 HTTP {st}"
def read(self, query: dict | None = None) -> Records:
q = (query or {}).get("keyword", "")
limit = max(1, min(int((query or {}).get("limit", 10)), 20))
ck = f"cve:{q}:{limit}"
c = _cached(ck, 300)
if c:
return c
import urllib.parse as up
params = {"resultsPerPage": limit}
if q:
params["keywordSearch"] = q
st, raw = http_json(self.provider_base + "?" + up.urlencode(params))
if st == 200 and isinstance(raw, dict):
items = []
for v in (raw.get("vulnerabilities", []) or [])[:limit]:
cve = v.get("cve", {})
m = cve.get("metrics", {})
cvss = sev = None
for mk in ("cvssMetricV31", "cvssMetricV30", "cvssMetricV2"):
if m.get(mk):
cd = m[mk][0].get("cvssData", {})
cvss = cd.get("baseScore"); sev = cd.get("baseSeverity")
break
ds = cve.get("descriptions", [])
desc = next((d["value"] for d in ds if d.get("lang") == "en"), ds[0]["value"] if ds else "")
items.append({"id": cve.get("id"), "severity": sev, "cvss": cvss,
"published": (cve.get("published") or "")[:10], "desc": desc[:200]})
r = Records(connector_id=self.id, category=self.category, state=State.CONNECTED,
records=items, source="NVD 2.0 (NIST, public domain)", live=True,
note=f"live · query={q or '(recent)'}", schema_preview=self.schema_preview)
_put(ck, r)
return r
return self._ready_records(f"NVD unreachable (HTTP {st})")
# ── EPSS (FIRST) ─────────────────────────────────────────────────────────────
@register
class EpssConnector(Connector):
id = "epss"
label = "EPSS Exploit Prediction (FIRST)"
category = "vuln"
auth_kind = "none"
free_tier = True
provider_base = "https://api.first.org/data/v1/epss"
docs_url = "https://www.first.org/epss/api"
schema_preview = ["cve", "epss", "percentile", "date"]
def _probe(self):
st, _ = http_json(self.provider_base + "?cve=CVE-2021-44228")
return (st == 200), f"EPSS HTTP {st}"
def read(self, query: dict | None = None) -> Records:
cve = (query or {}).get("cve", "")
order = (query or {}).get("order", "!epss")
limit = max(1, min(int((query or {}).get("limit", 15)), 50))
import urllib.parse as up
params = {"limit": limit}
if cve:
params["cve"] = cve
else:
params["order"] = order # top exploit-likely CVEs
ck = f"epss:{cve}:{order}:{limit}"
c = _cached(ck, 600)
if c:
return c
st, raw = http_json(self.provider_base + "?" + up.urlencode(params))
if st == 200 and isinstance(raw, dict):
items = [{"cve": d.get("cve"), "epss": d.get("epss"),
"percentile": d.get("percentile"), "date": d.get("date")}
for d in (raw.get("data", []) or [])[:limit]]
r = Records(connector_id=self.id, category=self.category, state=State.CONNECTED,
records=items, source="FIRST EPSS API", live=True,
note=f"live · {raw.get('total','?')} scored CVEs", schema_preview=self.schema_preview)
_put(ck, r)
return r
return self._ready_records(f"EPSS unreachable (HTTP {st})")
# ── MITRE ATT&CK STIX (vendored 0-CDN + online source) ──────────────────────
@register
class MitreAttackConnector(Connector):
id = "mitre_attack"
label = "MITRE ATT&CK (enterprise STIX)"
category = "attack"
auth_kind = "none"
free_tier = True
provider_base = "https://raw.githubusercontent.com/mitre-attack/attack-stix-data/master/enterprise-attack/enterprise-attack.json"
docs_url = "https://attack.mitre.org/"
schema_preview = ["technique_id", "name", "tactic", "description"]
def _probe(self):
# cheap HEAD-like: the STIX bundle is large; just confirm a 200 quickly
st, _ = http_text(self.provider_base, timeout=5.0)
return (st == 200), f"ATT&CK STIX HTTP {st}"
def read(self, query: dict | None = None) -> Records:
limit = max(1, min(int((query or {}).get("limit", 20)), 60))
ck = f"attack:{limit}"
c = _cached(ck, 3600)
if c:
return c
st, raw = http_json(self.provider_base, timeout=15.0)
if st == 200 and isinstance(raw, dict):
items = []
for o in raw.get("objects", []):
if o.get("type") != "attack-pattern":
continue
ext = next((r for r in o.get("external_references", [])
if r.get("source_name") == "mitre-attack"), {})
tactic = ", ".join(p.get("phase_name", "") for p in o.get("kill_chain_phases", []))
items.append({"technique_id": ext.get("external_id"), "name": o.get("name"),
"tactic": tactic, "description": (o.get("description") or "")[:160]})
if len(items) >= limit:
break
r = Records(connector_id=self.id, category=self.category, state=State.CONNECTED,
records=items, source="MITRE ATT&CK enterprise STIX (vendored 0-CDN; online source)",
live=True, note="live STIX (vendored in-image for 0-CDN)", schema_preview=self.schema_preview)
_put(ck, r)
return r
return self._ready_records(f"ATT&CK STIX unreachable (HTTP {st})")
# ── GitHub public API ─────────────────────────────────────────────────────────
@register
class GithubConnector(Connector):
id = "github"
label = "GitHub public API"
category = "data_source"
auth_kind = "token" # anon works; token raises the rate limit
free_tier = True # anon keyless tier exists
env_vars = ["SZL_GITHUB_TOKEN", "GITHUB_TOKEN"]
provider_base = "https://api.github.com"
docs_url = "https://docs.github.com/en/rest"
schema_preview = ["full_name", "description", "stars", "language", "updated_at"]
def _missing_env(self):
# keyless anon tier exists → never blocks to READY; token just raises rate
return []
def _headers(self):
import os
tok = os.environ.get("SZL_GITHUB_TOKEN") or os.environ.get("GITHUB_TOKEN")
h = {"Accept": "application/vnd.github+json"}
if tok:
h["Authorization"] = f"Bearer {tok}"
return h
def _probe(self):
st, _ = http_json(self.provider_base + "/rate_limit", headers=self._headers())
return (st == 200), f"GitHub API HTTP {st}"
def read(self, query: dict | None = None) -> Records:
org = (query or {}).get("org", "szl-holdings")
limit = max(1, min(int((query or {}).get("limit", 10)), 30))
ck = f"gh:{org}:{limit}"
c = _cached(ck, 300)
if c:
return c
st, raw = http_json(f"{self.provider_base}/orgs/{org}/repos?per_page={limit}&sort=updated",
headers=self._headers())
if st == 200 and isinstance(raw, list):
items = [{"full_name": r.get("full_name"), "description": (r.get("description") or "")[:120],
"stars": r.get("stargazers_count"), "language": r.get("language"),
"updated_at": (r.get("updated_at") or "")[:10]} for r in raw[:limit]]
import os
authed = bool(os.environ.get("SZL_GITHUB_TOKEN") or os.environ.get("GITHUB_TOKEN"))
r = Records(connector_id=self.id, category=self.category, state=State.CONNECTED,
records=items, source=f"GitHub API /orgs/{org}/repos", live=True,
note=f"live · {'token (5000/hr)' if authed else 'anon (60/hr)'}",
schema_preview=self.schema_preview)
_put(ck, r)
return r
return self._ready_records(f"GitHub API HTTP {st}")
__all__ = ["CisaKevConnector", "NvdCveConnector", "EpssConnector",
"MitreAttackConnector", "GithubConnector"]
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