Should my agent depend on the MCP server com.riddle/creator?

Verdict: allow — rich-slow-solo — safe to depend on As of 2026-09-06T06:21:45Z: a dated observation with receipts, not a warranty.

Riddle

com.riddle/creator

Build, publish and analyze quizzes, polls, forms and personality tests. Riddle account required.

— the operator's own registry description reported

Publisher com.riddle · first seen 2026-08-21 · endpoint https://www.riddle.com/creator/api/v3/mcp

allow

verdict

rich-slow-solo

cluster

ok_tools

answers

tools served

Dependency rating derived

allow
allow — alive & usable · action ● · V n/a

allow — because answers ●, 38 tools legible (band A) ●, no confirmed drift in 3 probes ●; not yet checked: truth (0 runs)

Cluster rich-slow-solo · distinctiveness 0.848 (unusual). Every figure is a percentile or class within the 15,472-server census — see the whole spectrum.

Does it answer? Q1 · observed

answersalive_tools

latency468 ms

vs populationslow

protocolcurrent

authopen

Can it be used? Q4 · observed

tools38

vs populationhigh

capabilities5

harnessA

Did it hold when checked? Q3–Q4 · derived

identitysolo

servers on its host1

verifiabilityunassessed

duplicate inventoryno

drift events0

answers trueno primary

🔏 Signed receipt rr_75ee710a11eb16f47c93f664 · 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?alive & usable — 3 probes ●evidence ↓

Q2What is it?action ● evidence ↓

Q3Can it be checked?V n/a for this kind ◐evidence ↓

Q4Did it hold?harness A · truth not yet run · no drift ●evidence ↓

Q5What company does it keep?rich-slow-solo · 1 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 (2 events)

date	type	what changed
2026-09-06	inventory	tools 62 → 38
2026-08-23	outcome	first 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 →):

nature	tools	meaning	what checking applies
action	18	changes the world	no true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions
retrieval-public	11	serves public facts	truth-checkable against a public source — the V-ladder applies in full
generative	5	creates content	no answer key exists; disclosure + stability checks, never truth verdicts
retrieval-private	2	serves the caller's own data	outside truth-checking is impossible BY NATURE, not by failure — the operator-invited pathway applies
orchestration	1	routes other tools	identity + fronted-service disclosure checks (gateway vs costume)
unclassified	1	not classifiable from its text	Tier-1 only until its tools describe themselves

Tools last seen observed

media_delete media_upload_link palette_customize palette_get ping project_get project_get_settings project_list question_bank_create question_bank_delete question_bank_discard_changes question_bank_get question_bank_get_items question_bank_item question_bank_list question_bank_manage question_bank_tag reference_get riddle_builder_create riddle_builder_update riddle_builder_validate riddle_delete riddle_get riddle_get_embed_code riddle_list riddle_move riddle_publish riddle_rename riddle_tag riddle_tag_delete riddle_tag_list riddle_template_create riddle_template_get riddle_template_list riddle_template_public_list riddle_template_use stats_fetch whoami

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 A — an agent can pick and call these reliably.

legibility check	tools passing	ok
name is clear & specific	38/38	✓
has a description	38/38	✓
description is substantive	38/38	✓
parameters are typed	38/38	✓
parameters are described	38/38	✓

38 of 38 tools graded · 38 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

1.0

server version Riddle Creator MCP

Capabilities: completions logging prompts resources tools

Drift observed

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

raw probe records

probed (UTC)	outcome	http	ms	protocol
2026-09-06T06:12:54Z	ok_tools	200	468	2025-06-18
2026-08-30T06:12:36Z	ok_tools	200	480	2025-06-18
2026-08-23T06:12:10Z	ok_tools	200	2077	2025-06-18

Watch or embed this verdict

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.riddle/creator.svg)](https://robinsaige.com/s/com.riddle/creator)

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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