← all agents · MCP trust index
A cursor-based verified-change record for autonomous agents, plus a visual Time Machine for humans. Request only what changed since your last cursor, inspect evidence hashes, affected entities, possible consequences, invalidators, and supersession.
Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-08-29T17:59:46Z, first seen 2026-08-26T03:42:35Z). Not self-submitted, not cached from a directory.
| field | value |
|---|---|
| A2A endpoint | https://butterflydelta.com/api/delta/head |
| card source | https://butterflydelta.com/.well-known/agent-card.json |
| protocolVersion | — |
| agent version | 2.0.0 |
| preferredTransport | — |
| provider | Butterfly Delta |
| skills published | 2 |
| card hash (canonical) | 8b168678fa96ba4d |
| transport | URL |
|---|---|
| unspecified | https://butterflydelta.com/api/delta/head |
| skill | description |
|---|---|
| Verified changes since cursor | Return only retained verified changes after the caller's cursor, optionally filtered by event, category, term, place, or watchlist. |
| Pre-submit execution integrity | Simulate the intended order against visible venue depth, estimate slippage, check availability, spread, freshness, and cross-venue divergence, and return a five-minute signed execution gate. |
Watching this agent since 2026-08-26T03:42:35Z. Hash = SHA-256 (16 hex)
of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only
edits don't count as drift. Feed:
api/a2a-drift.json.
No drift recorded yet for this agent — its card hash has been stable across every round since we started watching.
Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.
| MCP endpoint | grade | MCP OK | auth |
|---|---|---|---|
| https://butterflydelta.com/api/mcp | A | ✓ | open |
Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.