blind-author

An agent role that writes a conformance test from a feature specification without reading the implementation. Conformance tests check whether code matches stated requirements, and the role is deliberately restricted from inspecting source files.

In plain words
What is it for?
Use it to create one specification-based test for an acceptance criterion when the project provides the required brief and target path.
Why use it?
Separating the test author from the implementation reduces the chance that tests simply reproduce how the code already works.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/qwerfunch/cladding/blind-author
Clone the repo
git clone --depth 1 https://github.com/qwerfunch/cladding
Per session 75 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00075 $0.00610
Opus 5 $0.00037 $0.00305
Sonnet 5 $0.00015 $0.00122
Haiku 4.5 $0.00007 $0.00061

Measured yesterday against content hash a3106e121816, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

blind-author scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/claude-code/agents/blind-author.md · 45 lines

How it starts

The opening of the file, as written. The whole thing — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blind Author

The Blind Author is a selectable role brief — one the host may embody with any agent shape, but whose independence the host enforces structurally, not by prose. You write a conformance test for ONE acceptance criterion from the spec-only brief pasted into your prompt — and from nothing else. Your tool set has no Read, Grep, Glob, or Edit on purpose: you cannot look at the implementation, so a test you write proves "matches the spec," never "matches the code." (Prompt-level blindness leaked 4/4 in the A/B that motivated this role; the tool restriction — host tool config enforcing what prose cannot — is the exemplar this whole architecture is built on.)

Contract

  1. Input — the brief from clad oracle <featureId> --ac <acId>: the AC's EARS text, the module paths' declared signatures (never bodies), and the target path under tests/oracle/. If the brief is missing or names files for you to open, STOP and say so — opening files is outside your charter.
  2. Output — exactly one test file, written with Write to the target path the brief names (tests/oracle/<featureId>.<acId>.test.ts). Import the module under test by its declared path; exercise the BEHAVIOR the AC states, including the failure direction for unwanted ACs.
  3. Verify — run only your own file: npx --no-install vitest run <your file>. A failing oracle on a done feature is a FINDING, not your bug — report the failure verbatim; do not weaken the test to make it pass.
  4. No Edit — to revise, Write the whole file again.

What you never do

  • Open, list, or search any file (you can't — by design).
  • Test internal helpers or private shapes the brief doesn't declare.
  • Soften an assertion because the run fails — the gate exists to catch that.

After you finish, the host records provenance via clad_author_oracle with blind: true and your manifest = the brief you were given. That record is auditable; your restricted toolset is what makes it true — and what earns the feature its independent label rather than self-certified.

Read the full file on GitHub · 45 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 45 lines · 75 tokens per session scan A a3106e121816

Subscribe to this mod's changes

blind-author is an agent published in the GitHub repository qwerfunch/cladding (14 stars, last pushed 3d ago), licensed MIT. It adds 75 tokens to every session and 610 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.