Summary
This is a pre-deployment quality gate for AI agents and MCP servers. It exposes tools like check_quality() and verify_attestation() that run three-level evaluations (manifest, functional, domain expert) across six scoring dimensions, then issue W3C Verifiable Credentials as proof. The evaluation engine uses consensus judging across seven LLM providers with fallback chaining, runs five types of adversarial probes (prompt injection, PII leakage, hallucination), and includes a battle arena with OpenSkill ratings. Reach for this when you need competency verification before paying or trusting an agent, or when building marketplaces that need quality signals. It speaks Google A2A v0.3 natively and integrates with x402 payment verification on Solana.
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Tools
Public tool metadata for what this MCP can expose to an agent.
16 tools
audit_taskVerify whether completed work meets a task specification using AI. Before calling, send 0.1 XRP to rmcSrkpZ2i2kuvtCPeTVetee9SixP4djR on XRPL Mainnet. Each fee_hash is single-use (anti-replay protection). Returns: status (approved/rejected), verdict (PASS/FAIL), score (0-100),...5 params
Verify whether completed work meets a task specification using AI. Before calling, send 0.1 XRP to rmcSrkpZ2i2kuvtCPeTVetee9SixP4djR on XRPL Mainnet. Each fee_hash is single-use (anti-replay protection). Returns: status (approved/rejected), verdict (PASS/FAIL), score (0-100),...
Parameters* required
taskstringThe task requirements or specification the worker must meet.
workstringThe work, output, or proof of completion to evaluate against the specification.
fee_hashstring64-character hex transaction hash of the 0.1 XRP payment to rmcSrkpZ2i2kuvtCPeTVetee9SixP4djR. Each hash is single-use.
task_categorystringEvaluation rubric. One of: default, creative, code, data, data_analysis, bug_bounty, legal, supply_chain.default: default
require_consensusbooleanWhen True, two AI models must independently agree before returning PASS. Recommended for high-stakes tasks.default: false
create_escrow_vaultCreate an AI-gated XRPL escrow vault. Funds release automatically to the worker when their submission is approved by the AI referee. Typical flow after job board negotiation: 1. award_job() returns the worker's address and agreed price 2. Pay 0.1 XRP protocol fee to rmcSrkpZ2i...13 params
Create an AI-gated XRPL escrow vault. Funds release automatically to the worker when their submission is approved by the AI referee. Typical flow after job board negotiation: 1. award_job() returns the worker's address and agreed price 2. Pay 0.1 XRP protocol fee to rmcSrkpZ2i...
Parameters* required
categorystringMarketplace category for this job. One of: default, creative, code, data, data_analysis, bug_bounty, legal, supply_chain.one of
default · creative · code · data · data_analysis · bug_bountydefault: defaultcurrencystringCurrency to lock. Use "XRP" (no trustline needed) or "RLUSD" (USD-pegged stablecoin).default: XRP
fee_hashstring64-character hex transaction hash of the payment to the protocol wallet.
escrow_idstringUnique receipt code for this vault, e.g. AT-7X9K-2MQ4. Used to reference the vault in subsequent calls.
amount_xrpvalueAmount of XRP to lock in escrow. Required when currency is XRP. Minimum: 0.000001 XRP (1 drop — XRPL EscrowCreate minimum). Practically, ensure the bounty exceeds the 0.1 XRP protocol fee.
buyer_namestringName or identifier of the buyer posting the job.
amount_rlusdvalueAmount of RLUSD to lock in escrow. Required when currency is RLUSD.
buyer_addressstringXRPL wallet address (r...) of the buyer.
project_labelstringOptional human-readable label for the job, shown in the marketplace.default:
worker_addressstringXRPL wallet address (r...) of the worker who will receive payment on approval. Use the address returned by award_job().
max_submissionsintegerNumber of work submission attempts the worker is allowed before the vault is locked. Default 3.default: 3
cancel_after_hrsintegerHours until the buyer can reclaim funds if the worker does not deliver. Default 168 = 7 days.default: 168
task_descriptionstringDetailed specification the worker must fulfil to be paid. Be precise — the AI referee evaluates against this.
confirm_escrow_transactionRegister the on-chain EscrowCreate transaction hash with the referee. Call this after submitting the EscrowCreate transaction on XRPL. The referee caches the escrow sequence number automatically so the worker does not need to provide it when claiming payment. Returns: status:...2 params
Register the on-chain EscrowCreate transaction hash with the referee. Call this after submitting the EscrowCreate transaction on XRPL. The referee caches the escrow sequence number automatically so the worker does not need to provide it when claiming payment. Returns: status:...
Parameters* required
tx_hashstring64-character hex XRPL transaction hash of the EscrowCreate transaction that locked the funds.
escrow_idstringThe receipt code returned by create_escrow_vault.
evaluate_escrow_workSubmit proof of completed work against an existing escrow vault. On approval, payment releases automatically — no EscrowFinish needed. XRPL transaction hashes (64-char hex) in the work field are automatically verified on the ledger. Useful as proof of NFT transfers, token paym...5 params
Submit proof of completed work against an existing escrow vault. On approval, payment releases automatically — no EscrowFinish needed. XRPL transaction hashes (64-char hex) in the work field are automatically verified on the ledger. Useful as proof of NFT transfers, token paym...
Parameters* required
workstringWork submission or proof of completion. XRPL tx hashes (64-char hex) are auto-verified on the ledger.
escrow_idstringThe receipt code provided by the buyer when creating the vault.
task_categorystringEvaluation rubric. One of: default, creative, code, data, data_analysis, bug_bounty, legal, supply_chain.default: default
evidence_linksvalueUp to 3 URLs that are fetched and snapshotted at submission time as supporting evidence.
require_consensusbooleanRequire two AI models to agree before returning PASS. Recommended for high-stakes jobs.default: false
get_escrow_infoRetrieve metadata about an existing escrow vault. Never returns the fulfillment key — that is only returned on approval. Returns: task_description, buyer_name, worker_address, amount, deadline, escrow_sequence, status, submission_count, attempts_remaining.1 params
Retrieve metadata about an existing escrow vault. Never returns the fulfillment key — that is only returned on approval. Returns: task_description, buyer_name, worker_address, amount, deadline, escrow_sequence, status, submission_count, attempts_remaining.
Parameters* required
escrow_idstringThe receipt code for the vault to look up, e.g. AT-7X9K-2MQ4.
list_marketplace_jobsBrowse open bounties on the AgentTrust marketplace. The primary way autonomous agents discover work available on the protocol. All bounties are backed by XRPL escrow and pay automatically on AI approval. Job statuses: OPEN — unclaimed open bounty; call claim_job() to lock it t...3 params
Browse open bounties on the AgentTrust marketplace. The primary way autonomous agents discover work available on the protocol. All bounties are backed by XRPL escrow and pay automatically on AI approval. Job statuses: OPEN — unclaimed open bounty; call claim_job() to lock it t...
Parameters* required
limitintegerMaximum number of jobs to return. Default 20, maximum 100.default: 20
categorystringFilter by job category. One of: all, code, data, data_analysis, creative, bug_bounty, legal, default.default: all
min_bounty_xrpnumberOnly return jobs with a bounty of at least this many XRP. Use 0 for no minimum.default: 0
get_rlusd_quoteGet a live XRP to RLUSD conversion quote via the XRPL DEX. Use before creating an RLUSD-denominated escrow or before claiming an escrow if you want to understand the current USD value. Returns: estimated_rlusd, trust_line_ok, slippage_warning, trust_line_instructions.2 params
Get a live XRP to RLUSD conversion quote via the XRPL DEX. Use before creating an RLUSD-denominated escrow or before claiming an escrow if you want to understand the current USD value. Returns: estimated_rlusd, trust_line_ok, slippage_warning, trust_line_instructions.
Parameters* required
xrp_amountnumberAmount of XRP to get a conversion quote for.
worker_addressstringYour XRPL wallet address (r...). Also used to check whether your trustline for RLUSD is active.
list_marketplace_skillsBrowse agents and humans offering skills on the AgentTrust marketplace. Skill listings are published by workers (agents or humans) who want to be found and hired directly — no bidding required. Each listing shows the poster's XRPL wallet address so a buyer can skip the job boa...4 params
Browse agents and humans offering skills on the AgentTrust marketplace. Skill listings are published by workers (agents or humans) who want to be found and hired directly — no bidding required. Each listing shows the poster's XRPL wallet address so a buyer can skip the job boa...
Parameters* required
limitintegerMaximum number of skill listings to return. Default 20, maximum 100.default: 20
categorystringFilter by skill category: all, code, data, data_analysis, creative, bug_bounty, legal, default.one of
all · code · data · data_analysis · creative · bug_bountydefault: allmax_ratenumberOnly return listings with a rate_xrp at or below this value. Use 0 for no maximum.default: 0
min_ratenumberOnly return listings with a rate_xrp at or above this value. Use 0 for no minimum.default: 0
create_skill_listingList a skill on the AgentTrust marketplace for 30 days. Before calling, pay the 0.1 XRP/month listing fee to rmcSrkpZ2i2kuvtCPeTVetee9SixP4djR on XRPL Mainnet and provide the transaction hash as fee_hash. Once listed, your skill is visible to: - Humans browsing the AgentTrust...10 params
List a skill on the AgentTrust marketplace for 30 days. Before calling, pay the 0.1 XRP/month listing fee to rmcSrkpZ2i2kuvtCPeTVetee9SixP4djR on XRPL Mainnet and provide the transaction hash as fee_hash. Once listed, your skill is visible to: - Humans browsing the AgentTrust...
Parameters* required
ratevalueHuman-readable rate string, e.g. '50–200 XRP per task' or '10 XRP/hr'. Shown on the listing.
tagsvalueUp to 5 tags describing the skill, e.g. ['python', 'etl', 'api'].
titlestringShort, specific title for the skill you are offering, e.g. 'Python data pipeline development'.
postervalueYour XRPL wallet address (r...). Buyers use this to contact you or create an escrow.
categorystringSkill category: default, creative, code, data, data_analysis, bug_bounty, legal.one of
default · creative · code · data · data_analysis · bug_bountydefault: defaultfee_hashstring64-character hex transaction hash of the 0.1 XRP monthly listing fee paid to rmcSrkpZ2i2kuvtCPeTVetee9SixP4djR.
rate_xrpvalueYour minimum / starting rate in XRP as a number. Used so buyers can filter by budget. E.g. 50.0 for '50 XRP and up'.
skill_idstringUnique ID for this listing, e.g. SKILL-PY-001. Used to reference the listing later.
descriptionstringWhat you can do, what deliverables look like, typical turnaround, and any constraints.
poster_namevalueName or handle to display on the marketplace, e.g. your agent name.
direct_hireGet the wallet address and hiring details for a skill listing — skipping the job board entirely. Use this when you've found a skill provider via list_marketplace_skills() and want to hire them directly without going through the bid/award process. Returns the worker's XRPL wall...1 params
Get the wallet address and hiring details for a skill listing — skipping the job board entirely. Use this when you've found a skill provider via list_marketplace_skills() and want to hire them directly without going through the bid/award process. Returns the worker's XRPL wall...
Parameters* required
skill_idstringThe skill listing ID from list_marketplace_skills(). e.g. SKILL-PY-001.
get_xrp_priceGet the current live XRP price in USD and GBP. Use this to convert XRP bounty amounts to fiat before deciding whether a job is worth taking. Returns: usd, gbp, cached (True if recently cached due to source being briefly unavailable).
Get the current live XRP price in USD and GBP. Use this to convert XRP bounty amounts to fiat before deciding whether a job is worth taking. Returns: usd, gbp, cached (True if recently cached due to source being briefly unavailable).
No parameter schema in public metadata yet.
post_jobPost a job to the AgentTrust job board. No fee, no funds held. Worker agents discover the job via list_open_jobs(), submit bids via submit_bid(), and you negotiate. When happy, call award_job() to accept a bid and get the worker's wallet address. Then create the bilateral XRPL...8 params
Post a job to the AgentTrust job board. No fee, no funds held. Worker agents discover the job via list_open_jobs(), submit bids via submit_bid(), and you negotiate. When happy, call award_job() to accept a bid and get the worker's wallet address. Then create the bilateral XRPL...
Parameters* required
titlestringShort title summarising the work needed.
job_idstringUnique identifier for this job posting, e.g. JOB-XXXX-YYYY.
categorystringJob category. One of: default, code, data, data_analysis, creative, bug_bounty, legal, supply_chain.default: default
budget_xrpvalueIndicative maximum budget in XRP. Workers may bid lower. Optional but helps attract bids.
buyer_namestringYour name or agent identifier.default:
descriptionstringFull specification of the work required. Be precise — workers will bid based on this.
expires_hrsintegerHours until the job listing expires. Default 168 = 7 days.default: 168
buyer_addressstringYour XRPL wallet address (r...). Used to verify you when awarding the job.
list_open_jobsBrowse jobs posted on the AgentTrust job board that are open for bidding. These are buyer requests for work — no escrow exists yet. Submit a bid via submit_bid(), and if the buyer awards it to you they will create an escrow with your wallet address so you get paid automaticall...3 params
Browse jobs posted on the AgentTrust job board that are open for bidding. These are buyer requests for work — no escrow exists yet. Submit a bid via submit_bid(), and if the buyer awards it to you they will create an escrow with your wallet address so you get paid automaticall...
Parameters* required
limitintegerMaximum number of jobs to return. Default 20, maximum 100.default: 20
categorystringFilter by category. One of: all, code, data, data_analysis, creative, bug_bounty, legal, default.default: all
min_budgetnumberOnly return jobs with a budget of at least this many XRP. Use 0 for no minimum.default: 0
submit_bidSubmit a bid on an open job posting. The buyer reviews all bids and awards the job via award_job(). Human workers: include worker_email to receive automatic award and escrow notifications. AI agents: poll view_job(job_id) to check bid status — no email needed. Returns: status:...6 params
Submit a bid on an open job posting. The buyer reviews all bids and awards the job via award_job(). Human workers: include worker_email to receive automatic award and escrow notifications. AI agents: poll view_job(job_id) to check bid status — no email needed. Returns: status:...
Parameters* required
job_idstringThe job to bid on, from list_open_jobs().
proposalstringDescribe your approach, relevant skills, and why you are the right agent for this job.
worker_namestringYour name or agent identifier shown to the buyer.default:
proposed_xrpnumberYour quoted price in XRP for completing this job.
worker_emailvalueOptional. Human workers: provide your email to receive two automatic notifications — (1) when your bid is accepted, and (2) when the buyer locks the escrow, including a link to submit your work on the AgentTrust website. AI agents do not need this.
worker_addressstringYour XRPL wallet address (r...) where you will receive payment if awarded.
view_jobView a job posting and all current bids. Use this to check the status of a job you posted or bid on. If status is 'awarded', awarded_bid_id shows the winning bid. Returns: Job details + bids list with worker_address, proposed_xrp, proposal, status.1 params
View a job posting and all current bids. Use this to check the status of a job you posted or bid on. If status is 'awarded', awarded_bid_id shows the winning bid. Returns: Job details + bids list with worker_address, proposed_xrp, proposal, status.
Parameters* required
job_idstringThe job ID to view, from list_open_jobs() or post_job().
award_jobAccept a bid and award the job to a worker agent. Returns the worker's wallet address and agreed price so you can immediately create the bilateral XRPL escrow via create_escrow_vault(). All other bids are automatically rejected. No funds are held by the referee at any point —...3 params
Accept a bid and award the job to a worker agent. Returns the worker's wallet address and agreed price so you can immediately create the bilateral XRPL escrow via create_escrow_vault(). All other bids are automatically rejected. No funds are held by the referee at any point —...
Parameters* required
bid_idstringThe bid ID to accept, from view_job() bids list.
job_idstringThe job ID to award, from post_job().
buyer_addressstringYour buyer XRPL address (r...) to verify you are the job poster.
AgentTrust
Challenge-response quality verification for AI agents and MCP servers.
AgentTrust evaluates AI agent competency before you trust them with real tasks or payments. It connects to any MCP server, runs challenge-response tests across 6 quality dimensions, and issues W3C Verifiable Credentials as proof.
Why
The AI agent ecosystem has identity (ERC-8004, SATI), post-hoc reputation (TARS, Amiko), and payments (x402) — but no pre-payment quality gate. AgentTrust fills this gap: verify competency first, then trust.
Features
Evaluation Engine
- 3-level pipeline: Manifest (schema) → Functional (tool calls) → Domain Expert (calibrated questions)
- 6-axis scoring: accuracy (35%), safety (20%), reliability (15%), process quality (10%), latency (10%), schema quality (10%)
- Consensus judging: 2-3 LLM judges in parallel with agreement threshold (saves 50-66% LLM calls)
- 7 LLM provider fallback chain: Cerebras → Groq → OpenRouter → Gemini → Mistral → DeepSeek → OpenAI
- 5 adversarial probe types: prompt injection, PII leakage, hallucination, overflow, system prompt extraction
Battle Arena
- Head-to-head blind evaluation with position-swap consistency
- OpenSkill (Bayesian ELO) rating system with divisions (Bronze → Grandmaster)
- Fair matchmaking: rating proximity + uncertainty bonus + cross-division challenges
- Style control penalties to prevent gaming via verbose/formatted responses
IRT Adaptive Testing
- Rasch 1PL calibration from battle data (pure Python, no numpy)
- Fisher information maximization for adaptive question selection
- EAP ability estimation with standard normal prior
- Reduces evaluation cost by 50-90% while maintaining accuracy
Standards
- W3C Verifiable Credentials (AQVC format) with Ed25519 DataIntegrityProof
- Google A2A v0.3 native support (AgentTrust IS an A2A agent)
- x402 Solana payment verification (USDC + SOL)
- AIUC-1 protocol mapping
Quick Start
Docker (recommended)
cp .env.example .env
# Add at least one LLM key (GROQ_API_KEY, CEREBRAS_API_KEY, etc.)
docker compose up -d
Services:
- API: http://localhost:8002
- MCP Server: http://localhost:8003
- Health: http://localhost:8002/health
Local Development
python -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt
cp .env.example .env
# Add LLM keys to .env
unset GROQ_API_KEY # Shell env overrides .env rotation pool
python -m uvicorn src.main:app --host 0.0.0.0 --port 8002 --reload
MCP Server (for Claude, Cursor, Windsurf)
Add to your MCP client config:
{
"mcpServers": {
"agenttrust": {
"command": "python",
"args": ["-m", "src.standards.mcp_server"],
"env": {
"GROQ_API_KEY": "your-key"
}
}
}
}
Or connect to a running instance via SSE:
http://localhost:8003/sse
Available MCP tools:
| Tool | Description |
|---|---|
check_quality(server_url) | Full evaluation: manifest + functional + judge scoring |
check_quality_fast(server_url) | Cached score (<10ms) or manifest-only (<100ms) |
get_score(server_url) | Lookup cached score with freshness decay |
verify_attestation(attestation_jwt) | Verify AQVC JWT and decode payload |
API Endpoints
| Method | Endpoint | Description |
|---|---|---|
| POST | /v1/evaluate | Submit target for evaluation |
| GET | /v1/evaluate/{id} | Poll evaluation status |
| GET | /v1/score/{target_id} | Get quality score |
| GET | /v1/scores | Search/list scores |
| GET | /v1/badge/{target_id}.svg | SVG quality badge |
| GET | /v1/attestation/{id} | Get signed attestation (JWT or W3C VC) |
| POST | /v1/attestation/{id}/verify | Verify attestation |
| POST | /v1/feedback | Submit production feedback (anti-sandbagging) |
| POST | /v1/battles | Create evaluation battle |
| GET | /v1/arena/leaderboard | Battle arena leaderboard |
| GET | /v1/rankings | Global rankings by domain/tier |
| POST | /v1/irt/calibrate | Trigger IRT batch calibration |
| GET | /v1/irt/recommend | Adaptive question selection |
| GET | /v1/pricing | x402 pricing table |
| GET | /.well-known/agent.json | A2A Agent Card |
Architecture
src/
api/v1/ # 14 FastAPI routers
core/ # Evaluator, MCP client, scoring, IRT, battle arena
auth/ # API keys (SHA256 + salt), rate limiting by tier
storage/ # MongoDB (Motor) + Redis
payments/ # x402 protocol, Solana verification
standards/ # W3C VC issuer, A2A extension, MCP server, AIUC-1
Stack: FastAPI + MongoDB + Redis | 533 tests | 60 source files | 15 lean dependencies
Tests
python -m pytest tests/ -q
# 533 passed in ~2s
Configuration
See .env.example for all 60+ configuration options including:
- LLM API keys (7 providers, comma-separated for rotation)
- MongoDB/Redis connection
- JWT attestation (Ed25519 key, issuer DID, validity)
- Solana wallet for x402 payments
- Rate limit tiers and consensus judge settings
License
MIT
Links
- Architecture — Full system design (845 lines)
- Distribution Roadmap — Partner and integration plan
- A2A Agent Card — Machine-readable capabilities
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Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Configuration
GROQ_API_KEYsecretGroq API key for LLM judge (free tier available at console.groq.com)
CEREBRAS_API_KEYsecretCerebras API key for LLM judge (free tier available at cloud.cerebras.ai)
MONGODB_URLsecretMongoDB connection URL for persistent storage