{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "io-usefulapi-printful",
  "component": "printful",
  "generated_at": "2026-10-04T09:48:28.419Z",
  "tracking_since": "2026-09-29",
  "counts": {
    "critical": 0,
    "security": 22,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a104e2-e2e0-77c8-a11f-700b6d5c94e9",
      "kind": "check.reverified",
      "family": "https",
      "subject_kind": "check",
      "subject": "https",
      "subject_child": "",
      "from_code": "https.inconclusive",
      "to_code": "https.enforced",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-04",
      "occurred_at": "2026-10-04 03:09:00.389739+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "HTTPS (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a104e2-e2e0-77c8-a11f-700b6d5c94e9"
    },
    {
      "id": "chg_01a104e2-e2e6-7a9d-83fb-7186322b2638",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.http_error",
      "to_code": "transport.verified",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-10-04",
      "occurred_at": "2026-10-04 03:09:00.389739+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a104e2-e2e6-7a9d-83fb-7186322b2638"
    },
    {
      "id": "chg_01a104e2-e2e8-769b-8f03-09cbcf9a6410",
      "kind": "check.reason",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.unreachable",
      "to_code": "auth.none_unlisted",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-04",
      "occurred_at": "2026-10-04 03:09:00.389739+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the whole tool list to see what that exposes.)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a104e2-e2e8-769b-8f03-09cbcf9a6410"
    },
    {
      "id": "chg_01a0ffba-5c1d-778b-bfbe-591c4d64ab41",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.07",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-03",
      "occurred_at": "2026-10-03 03:06:38.411601+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "Stability (0.07 → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0ffba-5c1d-778b-bfbe-591c4d64ab41"
    },
    {
      "id": "chg_01a0ffba-5c1e-74a5-a29f-c5f7b07f2234",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.verified",
      "to_code": "transport.http_error",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "status": "429",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-10-03",
      "occurred_at": "2026-10-03 03:06:38.411601+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0ffba-5c1e-74a5-a29f-c5f7b07f2234"
    },
    {
      "id": "chg_01a0ffba-5c1e-7a71-900e-d897ba258a5c",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-03",
      "occurred_at": "2026-10-03 03:06:38.411601+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0ffba-5c1e-7a71-900e-d897ba258a5c"
    },
    {
      "id": "chg_01a0ffba-5c1f-72d5-971d-19509f96736e",
      "kind": "check.unverifiable",
      "family": "https",
      "subject_kind": "check",
      "subject": "https",
      "subject_child": "",
      "from_code": "https.enforced",
      "to_code": "https.inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "plaintext_status",
        "status": "429"
      },
      "occurred_on": "2026-10-03",
      "occurred_at": "2026-10-03 03:06:38.411601+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "HTTPS (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0ffba-5c1f-72d5-971d-19509f96736e"
    },
    {
      "id": "chg_01a0ffba-5c1f-78e3-b1a5-97c14596a51b",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-03",
      "occurred_at": "2026-10-03 03:06:38.411601+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0ffba-5c1f-78e3-b1a5-97c14596a51b"
    },
    {
      "id": "chg_01a0ffba-5c20-7644-b802-4e8630d77433",
      "kind": "capture.status_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "capture",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": "verified",
      "to_value": "not_mcp",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "to": "not_mcp",
        "from": "verified"
      },
      "occurred_on": "2026-10-03",
      "occurred_at": "2026-10-03 03:06:38.411601+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0ffba-5c20-7644-b802-4e8630d77433"
    },
    {
      "id": "chg_01a0fa95-f0e5-72e9-ae33-284d2dcfc6ae",
      "kind": "check.reverified",
      "family": "https",
      "subject_kind": "check",
      "subject": "https",
      "subject_child": "",
      "from_code": "https.inconclusive",
      "to_code": "https.enforced",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-02",
      "occurred_at": "2026-10-02 03:08:45.542369+00",
      "observed_since": "2026-10-01",
      "source": "scan",
      "summary": "HTTPS (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0fa95-f0e5-72e9-ae33-284d2dcfc6ae"
    },
    {
      "id": "chg_01a0fa95-f0e5-7d7d-8c50-0dab46d62026",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.unreachable",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-02",
      "occurred_at": "2026-10-02 03:08:45.542369+00",
      "observed_since": "2026-10-01",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0fa95-f0e5-7d7d-8c50-0dab46d62026"
    },
    {
      "id": "chg_01a0fa95-f0e6-7515-a281-9b5854cfb87b",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.http_error",
      "to_code": "transport.verified",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-10-02",
      "occurred_at": "2026-10-02 03:08:45.542369+00",
      "observed_since": "2026-10-01",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0fa95-f0e6-7515-a281-9b5854cfb87b"
    },
    {
      "id": "chg_01a0fa95-f0e6-7ab7-9f9b-a5e61c3974df",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-02",
      "occurred_at": "2026-10-02 03:08:45.542369+00",
      "observed_since": "2026-10-01",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0fa95-f0e6-7ab7-9f9b-a5e61c3974df"
    },
    {
      "id": "chg_01a0f56b-e224-77db-b433-64bba9c00f6c",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.verified",
      "to_code": "transport.http_error",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "status": "429",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-10-01",
      "occurred_at": "2026-10-01 03:04:43.243016+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f56b-e224-77db-b433-64bba9c00f6c"
    },
    {
      "id": "chg_01a0f56b-e225-73e8-b70c-0ee047914f88",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-01",
      "occurred_at": "2026-10-01 03:04:43.243016+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f56b-e225-73e8-b70c-0ee047914f88"
    },
    {
      "id": "chg_01a0f56b-e225-7986-b63c-a8b073a7a9c4",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-01",
      "occurred_at": "2026-10-01 03:04:43.243016+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f56b-e225-7986-b63c-a8b073a7a9c4"
    },
    {
      "id": "chg_01a0f56b-e226-77a0-a525-75826af4146a",
      "kind": "capture.status_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "capture",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": "verified",
      "to_value": "not_mcp",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "to": "not_mcp",
        "from": "verified"
      },
      "occurred_on": "2026-10-01",
      "occurred_at": "2026-10-01 03:04:43.243016+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f56b-e226-77a0-a525-75826af4146a"
    },
    {
      "id": "chg_01a0f04b-c9a8-7b31-9391-6ac7200cb3f3",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.unreachable",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 03:11:33.751436+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f04b-c9a8-7b31-9391-6ac7200cb3f3"
    },
    {
      "id": "chg_01a0f04b-c9ab-7683-9875-d00d0b395553",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.http_error",
      "to_code": "transport.verified",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 03:11:33.751436+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f04b-c9ab-7683-9875-d00d0b395553"
    },
    {
      "id": "chg_01a0f04b-c9ac-7188-a5e9-645dc7214725",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 03:11:33.751436+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f04b-c9ac-7188-a5e9-645dc7214725"
    },
    {
      "id": "chg_01a0f04b-c9ac-786e-9dab-3d1354b43e0f",
      "kind": "check.appeared",
      "family": "tool-safety-manipulation",
      "subject_kind": "check",
      "subject": "tool-safety-manipulation",
      "subject_child": "",
      "from_code": null,
      "to_code": "toolsafety.manipulation_clean",
      "from_value": null,
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "units": "20",
        "judged": "20"
      },
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 03:11:33.751436+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f04b-c9ac-786e-9dab-3d1354b43e0f"
    },
    {
      "id": "chg_01a0f04b-c9ac-7d66-99a1-b8e2bcf9a6ec",
      "kind": "check.appeared",
      "family": "auth-registration",
      "subject_kind": "check",
      "subject": "auth-registration",
      "subject_child": "",
      "from_code": null,
      "to_code": "auth.registration_dcr_only",
      "from_value": null,
      "to_value": "partial",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 03:11:33.751436+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "First check of Authorization (partial)",
      "link": "https://verifymcp.io/servers/io-usefulapi-printful/printful#chg-chg_01a0f04b-c9ac-7d66-99a1-b8e2bcf9a6ec"
    }
  ],
  "days": [
    {
      "date": "2026-10-04",
      "total": 33,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-03",
      "total": 18,
      "delta": -58,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 8
    },
    {
      "date": "2026-10-02",
      "total": 76,
      "delta": 58,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 9
    },
    {
      "date": "2026-10-01",
      "total": 18,
      "delta": -53,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
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}