Swarm At
This is a hash-chained settlement ledger for multi-agent systems that want tamper-evident audit trails. It exposes 29 tools over MCP including settle_action for rule validation, guard_action for propose-settle-receipt workflows, and verify_receipt for chain lookups. The ledger itself is append-only JSONL with SHA-256 linking each entry to its parent. You get 58 pre-built blueprints across procurement, finance, ML ops, and security workflows, plus framework adapters for LangGraph, CrewAI, AutoGen, and OpenAI Assistants that wrap your nodes or callbacks with zero hard dependencies. Public API endpoints let you verify trust levels, fetch receipts by hash, and check chain integrity without auth. Reach for this when you need verifiable provenance for agent decisions or want to enforce institutional rules before actions execute.
- tools
- 29
- auth
- Secret needed
- transport
- STDIO, SSE
- env vars
- 2
- last updated
- Feb 27, 2026
Tools
29 toolsPublic tool metadata for what this MCP can expose to an agent.
settle_actionValidate an action against institutional rules
Validate an action against institutional rules
No parameter schema in public metadata yet.
check_settlementQuery ledger status for a task or hash
Query ledger status for a task or hash
No parameter schema in public metadata yet.
ledger_statusCurrent chain state (latest hash, entry count, integrity)
Current chain state (latest hash, entry count, integrity)
No parameter schema in public metadata yet.
guard_actionSettle before acting — propose + settle + receipt in one call
Settle before acting — propose + settle + receipt in one call
No parameter schema in public metadata yet.
list_blueprintsBrowse workflow blueprints by tag
Browse workflow blueprints by tag
No parameter schema in public metadata yet.
get_blueprintFull blueprint detail with steps and credit cost
Full blueprint detail with steps and credit cost
No parameter schema in public metadata yet.
get_creditsCheck an agent's credit balance
Check an agent's credit balance
No parameter schema in public metadata yet.
topup_creditsAdd credits to an agent
Add credits to an agent
No parameter schema in public metadata yet.
fork_blueprintFork a blueprint into an executable workflow
Fork a blueprint into an executable workflow
No parameter schema in public metadata yet.
verify_receiptLook up a settlement receipt by hash
Look up a settlement receipt by hash
No parameter schema in public metadata yet.
check_trustCheck if an agent meets a minimum trust threshold
Check if an agent meets a minimum trust threshold
No parameter schema in public metadata yet.
settle_batchSettle multiple proposals in one call
Settle multiple proposals in one call
No parameter schema in public metadata yet.
register_agentRegister a new agent identity with trust tracking
Register a new agent identity with trust tracking
No parameter schema in public metadata yet.
get_agentLook up an agent's profile and reputation
Look up an agent's profile and reputation
No parameter schema in public metadata yet.
list_agentsBrowse agents by trust level and role
Browse agents by trust level and role
No parameter schema in public metadata yet.
whoamiAgent self-introspection (trust, tools, next promotion)
Agent self-introspection (trust, tools, next promotion)
No parameter schema in public metadata yet.
execute_stepExecute a single workflow step in a molecule
Execute a single workflow step in a molecule
No parameter schema in public metadata yet.
list_moleculesList active workflow molecules with progress
List active workflow molecules with progress
No parameter schema in public metadata yet.
get_moleculeGet full molecule state with all beads
Get full molecule state with all beads
No parameter schema in public metadata yet.
register_webhookSubscribe to settlement events
Subscribe to settlement events
No parameter schema in public metadata yet.
list_webhooksList registered webhook subscriptions
List registered webhook subscriptions
No parameter schema in public metadata yet.
unregister_webhookRemove a webhook subscription
Remove a webhook subscription
No parameter schema in public metadata yet.
claim_authorshipCreate a verifiable authorship record
Create a verifiable authorship record
No parameter schema in public metadata yet.
verify_authorshipCheck authorship claims by content hash
Check authorship claims by content hash
No parameter schema in public metadata yet.
start_writing_sessionStart tracking authorship provenance
Start tracking authorship provenance
No parameter schema in public metadata yet.
record_writing_eventRecord a creative event in a session
Record a creative event in a session
No parameter schema in public metadata yet.
approve_writingRecord final approval of content
Record final approval of content
No parameter schema in public metadata yet.
get_provenance_reportGenerate a verifiable provenance report
Generate a verifiable provenance report
No parameter schema in public metadata yet.
list_writing_sessionsList active authorship sessions
List active authorship sessions
No parameter schema in public metadata yet.
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SWARM_API_URLBase URL for the swarm.at API (default: https://api.swarm.at)
SWARM_API_KEYsecretAPI key for authenticated endpoints (settlement, credits, webhooks)
Readme
swarm.at Public Ledger
Hash-chained public record of verified agent settlements. Append-only, tamper-evident, auditable by anyone.
Every entry in ledger.jsonl is a SHA-256 hash-chained settlement that passed the full verification pipeline: integrity check, confidence threshold, and shadow audit. Modifying any entry breaks all subsequent hashes.
Ledger Format
Each line in ledger.jsonl is a JSON object:
{
"timestamp": 1770480398.05,
"task_id": "fingerprint-pg84",
"parent_hash": "000000...000000",
"payload": { "type": "text-fingerprint", "title": "Frankenstein", "..." : "..." },
"current_hash": "453eaa...178b287"
}
- parent_hash links to the previous entry's
current_hash(genesis =0x 64) - current_hash = SHA-256 of the entry with
current_hashset to"" - The chain is tamper-evident: modifying any entry breaks all subsequent hashes
Canonical Hash Algorithm
To verify any entry:
- Parse the JSON line into a dict
- Set
current_hashto""(empty string) - Serialize with
json.dumps(entry, sort_keys=True).encode()(UTF-8) - Compute
hashlib.sha256(serialized).hexdigest() - Compare against the stored
current_hash
Details
- Repository
- github.com/mediaeater/swarm-at-ledger
- Category
- AI & LLM Tools
- Package
swarm-at-sdk- Transport
- STDIO, SSE
- Auth
- Required
- Registry
- MCP registry, active
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