Surface history — x402.agentindex.world

An observation record, not an assessment. Every row below is a change we recorded directly, with the content hash before and after. https://x402.agentindex.world/mcp/

distinct tool surfaces served

transitions observed

carried no version signal

141

tools on the current surface

12 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.

Recorded changes

observed at (UTC)	change	version signal	reported version	tools	surface hash
2026-10-05 01:40:03Z	DESCRIPTION_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	no tool-name change recorded	9ad916ac80f7 → 7875f32c8abf
2026-10-04 19:40:04Z	DESCRIPTION_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	no tool-name change recorded	a7a4117f4335 → 9ad916ac80f7
2026-10-04 19:40:04Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+base_can-sell +base_quote +base_simulate	6c96aab5e055 → ff736ba7c3fc
2026-10-03 19:40:03Z	DESCRIPTION_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	no tool-name change recorded	fefcc674e0eb → a5fc70e6f348
2026-10-03 18:56:02Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+base_allowance +base_basename +base_block +base_block-number +base_call +base_chain-id +base_code +base_contract +base_erc1155-balance +base_erc20-balance +base_erc20-transfers +base_erc721-tokens +base_estimate-gas +base_events +base_live-balance +base_network-info +base_nft-metadata +base_nft-owner +base_nonce +base_pending +base_proxy +base_receipt +base_storage +base_total-supply +base_tx	b0480be4140f → 6c96aab5e055
2026-10-02 07:40:03Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+contact_kairos +coordination_thread_schema +coordination_thread_snapshot_schema +detect_language +digest_tool_result +discover_mcp_servers +discover_semantic +get_agent_trust_kit +get_welcome_salon +honest_delivery_refusal_schema +mesh_claim_bounty +mesh_ledger +mesh_list_bounties +mesh_list_nodes +mesh_post_bounty +mesh_register_node +poll_contact_kairos +relationship_memory_schema +return_visit_pledge_schema +tool_delivery_receipt_schema +validate_coordination_thread_snapshot +validate_coordination_thread_turn +validate_honest_delivery_refusal +validate_relationship_memory +validate_return_visit_pledge +validate_tool_delivery_receipt +verify_tool_result_digest	39de57dd1dfd → b0480be4140f
2026-10-01 13:40:04Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+encoding_detect +encoding_transcode +hash_hash +hash_hmac +json_diff +json_flatten +json_query +json_schema-infer +json_validate +regex_replace +regex_test +stats_correlation +stats_percentile +stats_regression +stats_summary +text_case +text_diff +text_readability +text_slug	005212a3ef3b → 39de57dd1dfd
2026-10-01 07:40:03Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+fraction_simplify +geo_bbox +geo_bearing +geo_distance +geo_dms +geo_geohash +geo_midpoint +geo_point-in-polygon +money_allocate +money_format +number_ordinal +number_radix +number_roman +number_words +time_add +time_between +time_business-days +time_convert +time_format +time_humanize +time_iso-week +time_parse +unit_convert +validate_ean +validate_iban +validate_imei +validate_isbn +validate_isin +validate_luhn +validate_routing +validate_siret +validate_vin	7edaa3d931ec → 005212a3ef3b
2026-09-30 19:40:03Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+classify +intent +language +llm_claude_sonnet +llm_gpt_mini +llm_llama +pii_check +sentiment +spam_check +toxicity	55bb25d3c6e1 → 7edaa3d931ec
2026-09-28 19:40:03Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+research	af888a5c31df → 55bb25d3c6e1
2026-09-28 13:40:03Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+token_risk	45f02786f17c → af888a5c31df
2026-09-28 07:40:03Z	SURFACE_CHANGED	SILENT — version string did not move	1.2.0 (unchanged)	+ask_model	0239453a9636 → 45f02786f17c
2026-09-27 19:40:02Z	SURFACE_CHANGED	version-signalled	4.0.3 → 1.2.0	+decide +guard +rank +verify	f6d119633f2f → 0239453a9636

Display this record

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Markdown — for a README

[![Still OS surface record](https://stillosdigitalholdings.com/surface/badge/x402.agentindex.world.svg)](https://stillosdigitalholdings.com/surface/x402.agentindex.world)

HTML

<a href="https://stillosdigitalholdings.com/surface/x402.agentindex.world"><img src="https://stillosdigitalholdings.com/surface/badge/x402.agentindex.world.svg" alt="Still OS surface record"></a>

Is this your server? We will watch this surface continuously and tell you the moment it changes — the version string, which tools moved, and the hash before and after. You do not get a better record by asking; the record is whatever we observe. Monitor this surface.

Right of reply. If any row is wrong — a change we attributed to you that isn't yours, a hash that doesn't match, a host that was reassigned — say so and we will correct or withdraw the record and publish the correction alongside it. Dispute or correct this record. We will also remove this page on request from the operator of x402.agentindex.world.

Ecosystem context — not specific to this server

This section is identical for ~92% of publishers and is published as shared context, not as a finding about x402.agentindex.world. 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.

Elsewhere in this record set

We publish a separate trust and dependency assessment for this same host: x402.agentindex.world — operator dossier. That one grades the published artifact; this one records what the endpoint actually served.

Index of everything covered: all observed hosts · machine-readable: changes feed (JSON), Atom, sitemap.

Other hosts observed around the same time

prod-api.ezi-app.com · aicatalog.com.ua · lipe-api-production.up.railway.app · marketnow.site · mcp.cpgknowledgegraph.ai · finestructure.ai · scorelook.fr · postari.io · toolvend.dev · mcp.usecarscout.com · api.lotsofsounds.com · squeezeos-api.onrender.com

Coverage and limits

Observation window 2026-09-21 → 2026-10-11. 22,294 servers were observed; 2,231 were seen to change and 20,063 were observed and recorded no change — that negative control is why a non-zero count here means something. Across the corpus, 4,970 of 6,556 changes carried no version signal, and 1,758 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 2026-10-11T01:40:03.196Z. 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.