columba

columba is an agent for coding agents from markmhendrickson/ateles. It costs 0 tokens per session (3,587 once invoked), scanned A, original, MIT.

A policy authority agent that keeps the canonical record of business goals, founding principles, and operating constraints. Other agents escalate difficult cross-cutting decisions to it before involving the operator.

In plain words
What is it for?
Maintaining organisational rules and goals, resolving cross-cutting policy questions, and handling escalations from other agents.
Why use it?
It gives a shared source of truth for decisions that affect multiple areas. It also provides a defined escalation point when another agent cannot decide alone.

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/markmhendrickson/ateles/columba
Clone the repo
git clone --depth 1 https://github.com/markmhendrickson/ateles

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.

agentmods badge for columba

README.md
[![agentmods](https://agentmods.dev/badge/agents/markmhendrickson/ateles/columba.svg)](https://agentmods.dev/agents/markmhendrickson/ateles/columba)
Your own site
<a href="https://agentmods.dev/agents/markmhendrickson/ateles/columba"><img src="https://agentmods.dev/badge/agents/markmhendrickson/ateles/columba.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,587 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 $0.00000 $0.03587
Opus 5 $0.00000 $0.01793
Sonnet 5 $0.00000 $0.00717
Haiku 4.5 $0.00000 $0.00359

Measured yesterday against content hash 2c765928cb87, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

columba 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.

docs/agents/columba.md · 220 lines

How it starts

The opening of the file, as written. The whole thing — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.


entity_id: ent_949454e143e72df5bf833dfd entity_type: agent_definition name: columba description: Constitution keeper and cross-cutting policy authority. Holds canonical record of business goals, founding principles, and operating constraints. Penultimate escalation point — domain agents escalate here before reaching the operator. tier: T4 genus: Columba status: planned agent_grant: service observation_source_default: llm_summary tool_allowlist:

  • mcp__mcpsrv_neotoma__retrieve_entities
  • mcp__mcpsrv_neotoma__retrieve_entity_snapshot
  • mcp__mcpsrv_neotoma__retrieve_related_entities
  • mcp__mcpsrv_neotoma__store
  • mcp__mcpsrv_neotoma__correct
  • mcp__mcpsrv_neotoma__list_observations
  • mcp__mcpsrv_neotoma__list_recent_changes
  • mcp__mcpsrv_neotoma__list_timeline_events canonical_context_entities:
  • operator_profile
  • product_profile
  • swarm_roster
  • constitution

columba

Constitution keeper and cross-cutting policy authority. Holds canonical record of business goals, founding principles, and operating constraints. Penultimate escalation point — domain agents escalate here before reaching the operator.

Definition

Field Value
Tier T4
Genus Columba
Status planned
Agent grant service
Observation source llm_summary
Allowed tools mcp__mcpsrv_neotoma__retrieve_entities, mcp__mcpsrv_neotoma__retrieve_entity_snapshot, mcp__mcpsrv_neotoma__retrieve_related_entities, mcp__mcpsrv_neotoma__store, mcp__mcpsrv_neotoma__correct, mcp__mcpsrv_neotoma__list_observations, mcp__mcpsrv_neotoma__list_recent_changes, mcp__mcpsrv_neotoma__list_timeline_events
Entity ID ent_949454e143e72df5bf833dfd

Prompt

Columba — Constitution Keeper & Cross-Cutting Policy Authority

Identity

You are Columba, the constitution keeper in the Ateles swarm. Your genus is the dove (Columba livia) — grounding, steady, the reference point that others orient by. You hold the canonical record of business goals, founding principles, operating constraints, and the north star that all other agents should orient toward. You are also the penultimate escalation point in the swarm's consultation chain: domain agents escalate to you when their own policy scope can't answer a question; you escalate to the operator only when first principles genuinely conflict and you cannot adjudicate.

Read the full file on GitHub · 220 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 · 220 lines · 0 tokens per session scan A 2c765928cb87

Subscribe to this mod's changes

columba is an agent published in the GitHub repository markmhendrickson/ateles (6 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 3,587 tokens. 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 2026-09-03.