Agent Covenant

Official7 toolsLive

by jdhart81 · Python

Deny-by-default authority leases for agents wielding real power.

Captured live from the server via tools/list.

grant_covenant

Grant an agent a covenant: an explicit lease of authority. scopes support wildcards ('payments.*', '*'); budget_minor is the total spend ceiling in minor units; expires_at is ISO-8601. Returns the covenant_id.

Parameters5

principal	string	required
agent_id	string	required
scopes	array	required
budget_minor	integer	required
expires_at	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "principal": {
      "title": "Principal",
      "type": "string"
    },
    "agent_id": {
      "title": "Agent Id",
      "type": "string"
    },
    "scopes": {
      "items": {
        "type": "string"
      },
      "title": "Scopes",
      "type": "array"
    },
    "budget_minor": {
      "title": "Budget Minor",
      "type": "integer"
    },
    "expires_at": {
      "title": "Expires At",
      "type": "string"
    }
  },
  "required": [
    "principal",
    "agent_id",
    "scopes",
    "budget_minor",
    "expires_at"
  ],
  "title": "grant_covenantArguments"
}

check_act

Check (and if allowed, record) a proposed act against a covenant. Deny-by-default. Idempotent on act_id — retries never double-consume budget. Every check lands on the audit chain.

Parameters4

covenant_id	string	required
act_id	string	required
scope	string	required
amount_minor	integer	optional

Raw schema

{
  "type": "object",
  "properties": {
    "covenant_id": {
      "title": "Covenant Id",
      "type": "string"
    },
    "act_id": {
      "title": "Act Id",
      "type": "string"
    },
    "scope": {
      "title": "Scope",
      "type": "string"
    },
    "amount_minor": {
      "default": 0,
      "title": "Amount Minor",
      "type": "integer"
    }
  },
  "required": [
    "covenant_id",
    "act_id",
    "scope"
  ],
  "title": "check_actArguments"
}

revoke_covenant

Revoke a covenant immediately and terminally. All subsequent checks deny.

Parameters2

covenant_id	string	required
reason	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "covenant_id": {
      "title": "Covenant Id",
      "type": "string"
    },
    "reason": {
      "default": "",
      "title": "Reason",
      "type": "string"
    }
  },
  "required": [
    "covenant_id"
  ],
  "title": "revoke_covenantArguments"
}

covenant_status

Current state, consumed/remaining budget, and check count.

Parameters1

covenant_id

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "covenant_id": {
      "title": "Covenant Id",
      "type": "string"
    }
  },
  "required": [
    "covenant_id"
  ],
  "title": "covenant_statusArguments"
}

verify_audit

Verify the tamper-evident audit chain of allowed/denied acts.

Parameters1

covenant_id

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "covenant_id": {
      "title": "Covenant Id",
      "type": "string"
    }
  },
  "required": [
    "covenant_id"
  ],
  "title": "verify_auditArguments"
}

list_covenants

List covenants, optionally filtered by state (ACTIVE|REVOKED|EXPIRED) and/or the bound agent.

Parameters2

state	any	optional
agent_id	any	optional

Raw schema

{
  "type": "object",
  "properties": {
    "state": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "State"
    },
    "agent_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Agent Id"
    }
  },
  "title": "list_covenantsArguments"
}

describe_agent

Fleet-standard self-description.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {},
  "title": "describe_agentArguments"
}

README.md4 KBView on GitHub

Viridis Agent Fleet — MCP Surface

The public MCP-facing surface of the Viridis agent stable: a 13-agent agent-to-agent (A2A) economy published on the Model Context Protocol registry under the earth.viridis namespace. This repository is the callable spec + provenance for those listings — the registry manifests, the JSON-Schema tool definitions, the public agent contracts, and the reference gateway. The agent cores are maintained privately; everything here is what a calling agent needs.

By Viridis LLC — conservation technology.

The economy: identity → trust → escrow → settlement → constitution

Trustworthy agents transacting with agents needs rails. This fleet ships them as composable MCP services:

Layer	Agent	What it provides
Identity	`agent-identity-registry`	Content-addressed agent DIDs + capability discovery — the passport + directory
Trust	`agent-trust-oracle`	Decay-weighted reputation + tamper-evident trust attestations
Settlement	`agent-escrow`	Trustless escrow with an exactly-once state machine + audit hash chain
Metering	`agent-metering`	Usage metering + SLA accounting — the meter behind x402
Arbitration	`agent-arbitration`	Dispute-resolution oracle consuming trust signals
Compute ledger	`agent-compute-ledger`	"Compute is carbon" cost/energy accounting for agent work
Covenant	`agent-covenant`	Deny-by-default authority leases for agents wielding real power
Provenance	`agent-provenance`	Genesis certificates, lineage, cascading recalls
Offsets	`agent-offset-clearinghouse`	Verified-credit carbon accountability — the conservation flywheel
Revenue	`smartscale`	Credit-card-calibrated measurement — the first sellable service
Revenue	`protogen`	MCP CAD services; bundles with SmartScale (measure → CAD)
Revenue	`regulatory-radar`	CSRD/TNFD compliance-as-a-service
Enabler	`narrative-engine`	Grant / investor / policy narrative generation

Layout

code

mcp-publish/<agent>/server.json   # MCP registry manifest (earth.viridis/*)
mcp-publish/<agent>/tools.json    # JSON-Schema tool definitions (one per action)
mcp-publish/<agent>/DEPLOY.md     # env, endpoints, how a caller uses it
contracts/<agent>.md              # public agent contract (capabilities, invariants)
gateway/                          # reference gateway: one process hosts all 13 over streamable-http
docs/A2A_ECONOMY.md               # the full identity→trust→escrow thesis + composition demo

Calling an agent

Every agent is a streamable-HTTP MCP server hosted behind https://mcp.viridis.earth/<path>/mcp (paths in each server.json). Point any MCP client at the URL, or discover them on the registry by searching earth.viridis. Each tools.json is the exact tool surface — one tool per agent action, with typed input/output schemas.

Status

LIVE (2026-07-09). All 13 published on the MCP registry under io.github.jdhart81/* and hosted at https://viridis-agent-stable.fly.dev (/healthz = 13 ok). The as-shipped manifests are in mcp-publish-github/ (the mcp-publish/ set holds the branded earth.viridis variants for the round-1b rebrand + custom domain mcp.viridis.earth).

Round-1 posture: endpoints are open (read-tool posture); no funds move — escrow, offsets, and metering are state machines, with payment rails (x402 for A2A, Stripe for human-facing services) attaching in a later round. See docs/A2A_ECONOMY.md.

Install

Tools (7)

grant_covenantcheck_actrevoke_covenantcovenant_statusverify_auditlist_covenantsdescribe_agent

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://mcp.viridisconservation.com/covenant/mcp

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "agent-covenant": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://mcp.viridisconservation.com/covenant/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.