Robin Saige we check the tools AI agents call

Mercos

io.github.mcp-dir/mercos-mcp

Sales force and rep ERP on Mercos via the official API. List orders, customers, products, price tabl

— the operator's own registry description reported

Publisher io.github.mcp-dir · first seen 2026-08-22 · endpoint https://api.mcp.ai/p_mercos

allow
verdict
gateway
cluster
ok_tools
answers
25
tools served

Dependency rating derived

allow
allow — gateway · retrieval-public ● · V1 shows its work ◐
allow — because answers ●, 25 tools legible (band B) ●, no confirmed drift in 3 probes ●; not yet checked: truth (0 runs)

Cluster gateway · distinctiveness 0.255 (typical). Every figure is a percentile or class within the 15,472-server censussee the whole spectrum.

Does it answer? Q1 · observed
answersalive_tools
latency182 ms
vs populationtypical
protocolcurrent
authopen
Can it be used? Q4 · observed
tools25
vs populationhigh
capabilities1
harnessB
Did it hold when checked? Q3–Q4 · derived
identityfarm_member
servers on its host1115
verifiabilityunassessed
duplicate inventoryno
drift events0
answers trueno primary

🔏 Signed receipt rr_8c8009c62d4f17fad671a563 · ed25519 · key rs-rcpt-2026-08 — this rating is tamper-evident; an agent gets the full signature from check_server and can verify it against the published key.

Q1Does it answer?gateway — 3 probes ●evidence ↓
Q2What is it?retrieval-public ● evidence ↓
Q3Can it be checked?V1 shows its work ◐evidence ↓
Q4Did it hold?harness B · truth not yet run · no drift ●evidence ↓
Q5What company does it keep?gateway · 1115 on its host (context, not verdict) ◐evidence ↓

● observed · ◐ derived · ○ reported — the verdict synthesizes Q1–Q4; Q5 is context. Methodology →

History observed

Every probe we made, oldest → newest (3 shown, 2026-08-23 → 2026-09-06). Green answered · amber answered-but-walled · red no useful answer. A gap in our cadence is a gap in coverage, not evidence about the server.

changelog (1 events)
datetypewhat changed
2026-08-23outcomefirst probe: ok_tools

What kind of tools these are derived

Verification only means something relative to a tool's NATURE — an email-sender has no "true answer", a generator has no answer key. Classification evidence: classified from tool names/descriptions/annotations WE OBSERVED. What checking applies to each kind (the full methodology →):

naturetoolsmeaning what checking applies
retrieval-public15serves public factstruth-checkable against a public source — the V-ladder applies in full
action10changes the worldno true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions

Tools last seen observed

authenticate connect marketplace mercos_ajustar_estoque mercos_create_cliente mercos_create_pedido mercos_create_produto mercos_create_tabela_preco mercos_list_accounts mercos_list_categorias mercos_list_clientes mercos_list_comissoes mercos_list_condicoes_pagamento mercos_list_pedidos mercos_list_produtos mercos_list_tabelas_preco mercos_list_titulos mercos_list_transportadoras mercos_list_usuarios mercos_update_cliente mercos_update_pedido mercos_update_produto report_bug show_version toolkit_info

Harness readiness observed

Can an agent's harness pick this tool and call it correctly? Graded on the three things an agent reads — name, description, typed parameters. Band B — usable, with rough edges.

legibility checktools passingok
name is clear & specific25/25
has a description25/25
description is substantive25/25
parameters are typed25/25
parameters are described3/253/25

25 of 25 tools graded · 25 with a captured input schema. RS-008, Tier-1 — no domain knowledge, applies to any tool. “Alive” is not the same as “usable”.

Truth checks observed

Not in the Tier-2 trade lane, or not yet checked. Tier-2 re-derives a server's answers against published primary sources — see truth checks.

Protocol conformance observed

2025-06-18
protocol version
session model
0.9.342
server version mcp-ai

Capabilities: tools

Drift observed

No confirmed drift on record. Baseline set 2026-09-06; changes appear here after human review.

raw probe records
probed (UTC) outcomehttpmsprotocol
2026-09-06T06:16:28Zok_tools2001822025-06-18
2026-08-30T06:16:09Zok_tools2003452025-06-18
2026-08-23T06:13:43Zok_tools2006832025-06-18

Watch or embed this verdict

verdict badge

Operators: put the live verdict in your README — it updates with every census, links back here, and is a dated observation, never a warranty:

[![Robin Saige verdict](https://robinsaige.com/badge/io.github.mcp-dir/mercos-mcp.svg)](https://robinsaige.com/s/io.github.mcp-dir/mercos-mcp)

Depend on it? Subscribe to its change feed — outcome changes and confirmed drift, no account needed. Building on it? The full dossier as JSON — verdict, rating, truth checks, history — stable enough to gate CI on.

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Operator of this server? Everything we hold about it is on this page — free, no account, for anyone. Wrong attribution, stale probe, misclassification? Dispute this record →