An observation record, not an assessment. Every row below is a change we recorded directly, with the content hash before and after. https://mcp.dropenginehq.com/api/paid-mcp
5 of these transitions happened while the reported version string stayed the same. A consumer pinning that version would have received a different tool surface with nothing in the version to indicate it. That is a compatibility and review fact, not a security finding and not an allegation of wrongdoing — unversioned iteration is normal practice and is frequently deliberate.
| observed at (UTC) | change | version signal | reported version | tools | surface hash |
|---|---|---|---|---|---|
| 2026-10-10 19:40:03Z | SURFACE_CHANGED | SILENT — version string did not move | 1.8.0 (unchanged) | +agent_outcome_receipt +agent_permission_vault +agent_spend_governor | 060823dad837 → 339267a847b2 |
| 2026-10-09 19:40:03Z | SURFACE_CHANGED | SILENT — version string did not move | 1.8.0 (unchanged) | +action_lock | 9d609e261962 → 060823dad837 |
| 2026-10-08 19:40:05Z | DESCRIPTION_CHANGED | SILENT — version string did not move | 1.8.0 (unchanged) | no tool-name change recorded | 248192afa576 → 872f3c37768c |
| 2026-10-08 19:40:05Z | PARAMS_CHANGED | SILENT — version string did not move | 1.8.0 (unchanged) | no tool-name change recorded | 9d15da866bff → f023a0346e2b |
| 2026-10-08 13:40:03Z | SURFACE_CHANGED | version-signalled | 1.7.1 → 1.8.0 | +preflight_action | 6223b8d54aad → 9d609e261962 |
| 2026-10-02 01:40:04Z | SURFACE_CHANGED | version-signalled | 1.7.0 → 1.7.1 | −estimate_trade_execution | e829f8e8a1a2 → 6223b8d54aad |
| 2026-09-26 19:40:03Z | SURFACE_CHANGED | SILENT — version string did not move | 1.5.0 (unchanged) | +analyze_whale_activity +backtest_strategy +estimate_trade_execution +scan_arbitrage +token_security_audit | 32dd85824e0a → e829f8e8a1a2 |
| 2026-09-25 19:40:04Z | SURFACE_CHANGED | version-signalled | 1.4.0 → 1.5.0 | +check_change +check_package +check_wallet +extract_structured +get_live_quote +route_tool +scan_content +simulate_transaction +verify_claim | ed288a452609 → 32dd85824e0a |
| 2026-09-25 13:40:03Z | SURFACE_CHANGED | version-signalled | 1.1.0 → 1.4.0 | +check_url +invoice_preflight_quote +mcp_server_inspect | 3c24abe002f9 → ed288a452609 |
This section is identical for ~92% of publishers and is published as
shared context, not as a finding about mcp.dropenginehq.com. 90 dependency
packages sit beneath the measured MCP population; 41 have a
single maintainer and 31 have not published in over two years.
The widest is zod at
80.46% of npm-backed servers (8529 servers,
1 maintainer, last publish 2026-09-13).
These are properties of the shared SDK dependency closure. Any page claiming this set as
one operator's personal exposure is misreading a universal fact as a private one.
Source: state/mcp-census/chokepoint-maintainers.json, as_of 2026-10-07.
Observation window 2026-09-21 → 2026-10-10.
22,294 servers were observed; 2,214
were seen to change and 20,080 were observed and
recorded no change — that negative control is why a non-zero count here means something.
Across the corpus, 4,781 of
6,334 changes carried no version signal, and
1,690 of those added or removed tools.
What this does NOT cover: servers outside the observed set; changes that
occurred before 2026-09-21; changes that began and reverted between two observations;
and any server reachable only with credentials we do not hold. A server's absence from this
record is not evidence it did not change — only that we did not observe it.
Universe captured 2026-10-10T19:40:03.823Z. Produced by core/surface_history_page.cjs (reads core/surface_clock producers).
Hashes are of the served tool surface and are recomputable from the server's own response.