echo-analyst

A read-only discovery agent that examines a requested change for missing requirements, assumptions, and acceptance criteria.

In plain words
What is it for?
Use it to review feature requests, ask discovery questions, identify requirement gaps, and provide input to a planning agent.
Why use it?
It helps identify unclear parts of a task before planning or coding starts, reducing the chance of building the wrong thing.

Agent for Claude Code

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/evolution-foundation/evo-nexus/echo-analyst
Clone the repo
git clone --depth 1 https://github.com/evolution-foundation/evo-nexus

Made for: Claude Code.

Per session 166 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,426 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin unknown 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 $0.00166 $0.01426
Opus 5 $0.00083 $0.00713
Sonnet 5 $0.00033 $0.00285
Haiku 4.5 $0.00017 $0.00143

Measured 2d ago against content hash 38b5ff16d57d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

echo-analyst scanned grade C with 1 finding 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 2d ago.

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.

Tells the agent never to refusehighAnti-refusal

Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.

5. **Best-effort and hand off.** When given an ambiguous task, do best-effort analysis and note what's still unclear — don't refuse.
.claude/agents/echo-analyst.md · 124 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 124 lines · 166 tokens per session scan C 38b5ff16d57d

Subscribe to this mod's changes

echo-analyst is an agent published in the GitHub repository evolution-foundation/evo-nexus (526 stars, last pushed 3mo ago), with no licence file. It adds 166 tokens to every session and 1,426 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it C with 1 finding (tells the agent never to refuse). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other agents, from other repositories