Robin Saige we check the tools AI agents call

CostBench

com.costbench/mcp

Verified pricing, hidden costs, negotiation data & TCO for 3,290+ software products.

— the operator's own registry description reported

Publisher com.costbench · first seen 2026-08-12 · endpoint https://costbench.com/mcp

allow
verdict
stale-mid-solo
cluster
ok_tools
answers
8
tools served

Dependency rating derived

allow — stale-mid-solo — safe to depend on

Cluster stale-mid-solo · distinctiveness 0.162 (typical). Every figure is a percentile or class within the 11,094-server censussee the whole spectrum.

Reach — can an agent get to it?
answersalive_tools
latency331 ms
vs populationtypical
protocolbehind
authopen
Use — can it use it?
tools8
vs populationmid
capabilities1
harnessB
Trust — can it rely on it?
identitysolo
servers on its host1
verifiabilityunassessed
duplicate inventoryno
drift events0
answers trueno primary

🔏 Signed receipt rr_1a7514a7d99188d0bc2edf72 · 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.

Tools last seen

calculate_tco compare_software discover_software estimate_llm_cost get_hidden_costs get_negotiation_tips get_price_history get_pricing

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 & specific8/8
has a description8/8
description is substantive8/8
parameters are typed8/8
parameters are described1/81/8

8 of 8 tools graded · 8 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

2025-03-26
protocol version
session model
1.0.0
server version costbench

Capabilities: tools

Drift

No confirmed drift on record. Baseline set 2026-08-14; changes appear here after human review.

History observed

Every probe we made, oldest → newest (2 shown, 2026-08-12 → 2026-08-14). 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
2026-08-12outcomefirst probe: ok_tools
raw probe records
probed (UTC) outcomehttpmsprotocol
2026-08-14T19:58:01Zok_tools2003312025-03-26
2026-08-12T05:33:17Zok_tools2003352025-03-26

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/com.costbench/mcp.svg)](https://robinsaige.com/s/com.costbench/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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