Robin Saige we check the tools AI agents call

CompletionKit

com.completionkit/evals

Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.

— the operator's own registry description reported

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

allow
verdict
stale-rich-solo
cluster
ok_tools
answers
54
tools served

Dependency rating derived

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

Cluster stale-rich-solo · distinctiveness 0.397 (moderate). 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
latency127 ms
vs populationtypical
protocolbehind
authopen
Use — can it use it?
tools54
vs populationhigh
capabilities1
harnessB
Trust — can it rely on it?
identitysolo
servers on its host1
verifiabilityunassessed
duplicate inventoryno
drift events0
answers trueno primary

🔏 Signed receipt rr_bea1cf6df5cb38baf4e2f236 · 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.

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. This server's 54 tools, classified, with what checking applies to each kind (the full methodology →):

naturetoolsmeaning what checking applies
action39changes the worldno true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions
retrieval-public14serves public factstruth-checkable against a public source — the V-ladder applies in full
generative1creates contentno answer key exists; disclosure + stability checks, never truth verdicts

Tools last seen

agreements_create agreements_list datasets_create datasets_create_from_url datasets_delete datasets_get datasets_list datasets_update judges_compare judges_replay metric_groups_create metric_groups_delete metric_groups_get metric_groups_list metric_groups_update metric_versions_dismiss metric_versions_list metric_versions_publish metrics_create metrics_delete metrics_get metrics_list metrics_suggest_variants metrics_update promptfoo_import prompts_create prompts_delete prompts_get prompts_list prompts_publish prompts_suggest_improvement prompts_update provider_credentials_create provider_credentials_delete provider_credentials_get provider_credentials_list provider_credentials_update responses_get responses_list runs_create runs_delete runs_generate runs_get runs_list runs_regrade runs_rerun runs_retry_failures runs_update tags_create tags_delete tags_get tags_list tags_update usage_get

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 & specific54/54
has a description54/54
description is substantive27/5427/54
parameters are typed54/54
parameters are described11/5411/54

54 of 54 tools graded · 54 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
0.28.42
server version CompletionKit

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_tools2001272025-03-26
2026-08-12T05:33:17Zok_tools2001452025-03-26

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.completionkit/evals.svg)](https://robinsaige.com/s/com.completionkit/evals)

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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