What is sumo-mcp-readonly AGENTS.md?

Project instructions for a read-only MCP server that searches Sumo Logic, a service for storing and querying application logs. They describe its tools, design choices, setup, and safety rules.

Use them when changing or reviewing the TypeScript server, its Sumo searches, configuration, tests, or MCP communication.

They give a coding agent the context needed to work on the project without guessing how log searches, job sessions, timestamps, or credentials should be handled.

How CraigWetzelberger/sumo-mcp-readonly configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to CraigWetzelberger/sumo-mcp-readonly. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/CraigWetzelberger/sumo-mcp-readonly/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/CraigWetzelberger/sumo-mcp-readonly

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/craigwetzelberger/sumo-mcp-readonly/agents-md/github.svg)](https://agentmods.dev/instructions/craigwetzelberger/sumo-mcp-readonly/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/craigwetzelberger/sumo-mcp-readonly/agents-md"><img src="https://agentmods.dev/badge/instructions/craigwetzelberger/sumo-mcp-readonly/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/craigwetzelberger/sumo-mcp-readonly/agents-md"><img src="https://agentmods.dev/badge/instructions/craigwetzelberger/sumo-mcp-readonly/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 769 This file is loaded in full into every session.

When invoked 769 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00769	$0.00769
Opus 5	$0.00385	$0.00385
Sonnet 5	$0.00154	$0.00154
Haiku 4.5	$0.00077	$0.00077

Measured 9d ago against content hash d1821ae23fe5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

sumo-mcp-readonly AGENTS.md 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 9d 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.

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.

AGENTS.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

sumo-mcp-readonly

A read-only MCP server for querying Sumo Logic logs via the Search Job API.

Project Status

Complete and working. All 5 tools functional, 68 unit tests passing.

Tech Stack

TypeScript, Node.js 20+, ESM
MCP SDK (@modelcontextprotocol/sdk)
Zod for input validation
Vitest for tests
stdio transport

Key Architecture Decisions

Timestamps sent as epoch milliseconds (not ISO-8601) to the Sumo API — Sumo rejects ISO format with milliseconds
Cookies must be maintained per job session (Sumo requirement)
In-memory job registry tracks jobs created by this process — only owned jobs can be queried/cancelled
All logs to stderr (stdout reserved for MCP JSON-RPC protocol)
Credentials never logged — redaction applied before any error output

MCP Tools

sumo_search_logs — Run arbitrary Sumo queries
sumo_find_errors — Opinionated error search (ERROR, exception, failure, fatal, stack traces)
sumo_search_correlation_id — Search for a trace/request/correlation ID
sumo_get_search_status — Poll a running search job
sumo_cancel_search — Cancel a running search job

Configuration

Environment variables loaded via --env-file=.env in npm start, or passed via MCP client config env block.

Required:

SUMO_ACCESS_ID
SUMO_ACCESS_KEY
SUMO_API_BASE_URL — Regional API endpoint (see README for full list)

Sumo Logic API Reference

POST /v1/search/jobs — Create job (body: { query, from, to, timeZone })
GET /v1/search/jobs/{id} — Poll status
GET /v1/search/jobs/{id}/messages?offset=X&limit=Y — Get messages
GET /v1/search/jobs/{id}/records?offset=X&limit=Y — Get records
DELETE /v1/search/jobs/{id} — Cancel/delete job
Auth: HTTP Basic (AccessID:AccessKey)
Rate limit: 4 req/s, 200 concurrent jobs per org

Build & Test

npm install
npm run build    # TypeScript compile
npm test         # Unit tests
npm run lint     # ESLint
npm start        # Requires .env file

Project Structure

Read the full file on GitHub · 89 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.

9d ago First seen · 89 lines · 769 tokens per session scan A d1821ae23fe5

Subscribe to this mod's changes

sumo-mcp-readonly AGENTS.md is an instructions file published in the GitHub repository CraigWetzelberger/sumo-mcp-readonly (1 stars, last pushed 1mo ago), licensed MIT. It adds 769 tokens to every session, about $0.0038 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 2026-08-31.

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