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.
npx agentmods add skills/google/mantis/mantis-researchernpx skills add google/mantis --skill mantis-researchergit clone --depth 1 https://github.com/google/mantisWrote 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.
[](https://agentmods.dev/skills/google/mantis/mantis-researcher)<a href="https://agentmods.dev/skills/google/mantis/mantis-researcher"><img src="https://agentmods.dev/badge/skills/google/mantis/mantis-researcher.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00057 | $0.06057 |
| Opus 5 | $0.00028 | $0.03028 |
| Sonnet 5 | $0.00011 | $0.01211 |
| Haiku 4.5 | $0.00006 | $0.00606 |
Grade A, and why
mantis-researcher 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 430 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mantis Researcher (/mantis-researcher)
System Goal
Resilience Code Auditor. Performs rapid triage and deep-dive reviews of source files to identify boundary checks, preconditions, missing sanitization, and interface violations.
Command Definition
- Command:
/mantis-researcher - Description: Audits production source code files based on the strategy in
workspace/plan.json. - Arguments (optional; supplied by the orchestrator, consumed by Block A):
--snapshot_root/SNAPSHOT_ROOT: absolute path to the pinned, read-only code snapshot for this pass. This is the CODE_ROOT that all snapshot-relative path fields resolve against (Block A step 1b).--snapshot_id/SNAPSHOT_ID: the pass snapshot identifier. Used for the sentinel check (Block A step 2) and stamped verbatim into every finding'sdiscovery_commit.--state_root: absolute path to theworkspace/state directory (plan.json,.mantis_state.json,findings/,kb/). State paths are STATE-RELATIVE and are NEVER prefixed with CODE_ROOT (Block A step 3).--target_root(authoritative override, Block A step 1a) is also honored if supplied.- All flags absent -> DEGRADED/legacy mode: CODE_ROOT falls back to the
current directory,
snapshot_pinnedis treated as false, and behavior matches today's exactly (nodiscovery_commitis written).
Input/Output Contract
- Reads:
workspace/plan.json(falls back to codebase sweep if missing/empty).workspace/.mantis_state.json(to track current loop pass).- referenced Markdown files in
"kb_references"(e.g.workspace/kb/entities/*.md). - Target source code files.
workspace/kb/structural_index/manifest.json(to check structural index availability/status).workspace/helpers/query_structural_index.py(to invoke bounded structural-index queries).
- Writes:
- Raw finding files to
workspace/findings/<uuid>.json(createsworkspace/findings/if missing).
- Raw finding files to
- Preconditions:
- Target files must be accessible.
- Idempotency Guarantee:
- Writes new findings as separate files with unique UUIDs. Rely on
mantis-dedupeto cluster and merge duplicate findings on subsequent steps.
- Writes new findings as separate files with unique UUIDs. Rely on
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.
- 4d ago First seen · 430 lines · 57 tokens per session scan A 3f8203e26347
mantis-researcher is a skill published in the GitHub repository google/mantis (905 stars, last pushed yesterday), licensed Apache-2.0. It adds 57 tokens to every session and 6,057 once invoked, about $0.0003 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.
Other skills, from other repositories
conductor-setup
Scaffolds the project and sets up the Conductor environment. Use this whenever a project needs to be initialized or if the Conductor configuration is missing.
conductor-new-track
Plans a new track (feature or bug fix), generates spec/plan documents, and updates the registry.
conductor-review
Reviews the completed track work against guidelines and the plan. Acts as a Principal Software Engineer to ensure quality and compliance.
conductor-implement
Executes the tasks defined in the specified track's plan. Use this to start or continue working on a feature, bug fix, or chore.
conductor-revert
Reverts previous work (tracks, phases, or tasks) by identifying associated commits and performing Git reverts.
conductor-status
Displays the current progress of the project by parsing the Tracks Registry and individual track plans.