aid: algovoi-co-uk
name: AlgoVoi
description: >-
  AlgoVoi (AlgoVoi Ltd, UK; founder Christopher Hopley) builds compliance-aware, offline-verifiable payment and evidence
  infrastructure for AI agents across twelve mainnet chains, answering all four agent-payment protocols — x402, A2A, MPP and
  AP2 — from one settlement core. It runs two hosted doors: AlgoVoi Pay at pay.algovoi.co.uk, a tenant-free rail that
  charges 0.01 USDC per call with no account or API key (payment is the credential) and returns an Ed25519 receipt anyone
  can verify offline, and the multi-tenant Gateway at api.algovoi.co.uk (Bearer key + X-Tenant-Id, hosted checkout,
  recurring authorities, sanctions screening, hash-chained audit trail, Stripe-shaped signed webhooks). Around them sit an
  anonymous RFC 9421 signing clinic reachable over REST, A2A and a hosted MCP server, the Agent Trust Bench (187
  adversarial x402 research profiles), an audit-bundle verifier, five OpenAPI 3.1 contracts, A2A agent cards on five hosts,
  a published Agent Skill, llms.txt on four hosts, did:web identities, and a large Apache-2.0 reference layer on npm and
  PyPI (RFC 9421 signer/verifier, JCS substrate, receipt formats, an MCP server). Self-hosted products (Payment Rails,
  Verifiable Compliance Suite, post-quantum Reseal and Evidence Auditor) sell on perpetual licences paid in USDC.
image: https://algovoi.co.uk/apple-touch-icon.png
url: https://raw.githubusercontent.com/api-evangelist/algovoi-co-uk/refs/heads/main/apis.yml
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (local-v3; was a2a-registry harvest stub)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Payments
- Agentic Commerce
- x402
- A2A
- MCP
- Stablecoins
- Cryptocurrency
- Blockchain
- Compliance
- Digital Signature
- Post-Quantum Cryptography
- Verification
- Fintech
- agent-native
- Algorand
- United Kingdom
tags_raw:
- Payments
- Agentic Commerce
- x402
- A2A
- MCP
- Stablecoins
- Cryptocurrency
- Blockchain
- Compliance
- Digital Signatures
- Post-Quantum Cryptography
- Verification
- Fintech
- Agent-native
- Algorand
- United Kingdom
apis:
- aid: algovoi-co-uk:algovoi-pay-payable-core-api
  name: AlgoVoi Pay (Payable Core) API
  description: >-
    Tenant-free, pay-per-call verification rail (OpenAPI 3.1.0 "AlgoVoi Payable Core" 1.0.0, 17 operations). No account and
    no API key: each paid operation (verify an x402/AP2 receipt JWS, verify an RFC 9421 HTTP message signature, screen a URL;
    a compliance receipt is "coming soon") answers a strict x402 v2 402 challenge with one accept per lane across twelve
    mainnet chains, and the resubmitted call with X-PAYMENT returns the result plus an offline-verifiable Ed25519 payable
    receipt binding request hash, response hash and settled payment. GET on any paid URL is a free 402 probe; GET/POST
    /pay/v1/negotiate is a free chain-agnostic lane negotiation; /v1/receipt/verify is a free unsigned tier (120/min). The
    same host serves the A2A JSON-RPC door (/a2a), MPP and AP2 twins, a did:web document, the receipt JWKS and an x402
    descriptor.
  humanURL: https://docs.algovoi.co.uk/algovoi-pay
  baseURL: https://pay.algovoi.co.uk
  tags:
  - x402
  - Payments
  - Verification
  - agent-native
  - A2A
  tags_raw:
  - x402
  - Payments
  - Verification
  - Agent-native
  - A2A
  properties:
  - type: OpenAPI
    url: openapi/algovoi-co-uk-pay-openapi.yml
  - type: OpenAPI
    name: OpenAPI (provider-hosted)
    url: https://pay.algovoi.co.uk/openapi.json
  - type: Documentation
    url: https://docs.algovoi.co.uk/algovoi-pay
  - type: APIReference
    url: https://pay.algovoi.co.uk/docs
  - type: GettingStarted
    url: https://docs.algovoi.co.uk/chain-agnostic-negotiation
  - type: AgentCard
    url: a2a/algovoi-co-uk-a2a.yml
  - type: AgentCard
    name: Agent card (provider-hosted)
    url: https://pay.algovoi.co.uk/.well-known/agent-card.json
  - type: LLMsTxt
    url: llms/algovoi-co-uk-pay-llms.txt
  - type: LLMsTxt
    name: llms.txt (provider-hosted)
    url: https://pay.algovoi.co.uk/llms.txt
  - type: Authentication
    url: authentication/algovoi-co-uk-authentication.yml
  - type: Conventions
    url: conventions/algovoi-co-uk-conventions.yml
  - type: Idempotency
    url: conventions/algovoi-co-uk-conventions.yml
  - type: ErrorCatalog
    url: errors/algovoi-co-uk-problem-types.yml
  - type: RateLimits
    url: rate-limits/algovoi-co-uk-rate-limits.yml
  - type: Plans
    url: plans/algovoi-co-uk-plans-pricing.yml
  - type: Sandbox
    url: sandbox/algovoi-co-uk-sandbox.yml
  - type: Overlay
    url: overlays/algovoi-co-uk-pay-overlay.yaml
  - type: AgentSkill
    url: skills/algovoi-co-uk-pay-per-call-verification.md
  image: https://algovoi.co.uk/apple-touch-icon.png
- aid: algovoi-co-uk:algovoi-gateway-api
  name: AlgoVoi Gateway API
  description: >-
    The multi-tenant payment gateway (OpenAPI 3.1.0 "AlgoVoi Gateway" 1.0.0-phase1c, 115 operations, 99 schemas) at
    api.algovoi.co.uk: hosted checkout links and the checkout lifecycle (QR, build/submit txn, detect, status, cancel,
    abandon, cross-chain bridge), x402 and MPP gated resources and subscriptions, the AP2 mandate chain
    (intent/cart/pay/confirm/status), an A2A surface (message:send, tasks, pushNotificationConfigs, /a2a/jsonrpc,
    /a2a/gibberlink), customers, subscriptions, Tier 2 recurring authorities and hosted authorisation, payouts, compliance
    screening and a public compliance attestation, receipt and RFC 9421 verification, the suite store, signup proxies and
    the Agentic Payment Mandates portal. Authenticated with a tenant Bearer key (algv_) plus X-Tenant-Id; 300 req/min per
    tenant with X-RateLimit-* headers; Idempotency-Key on creates; Stripe-shaped HMAC-signed webhooks.
  humanURL: https://docs.algovoi.co.uk/api-reference/introduction
  baseURL: https://api.algovoi.co.uk
  tags:
  - Payments
  - Agentic Commerce
  - x402
  - MPP
  - AP2
  - A2A
  - Compliance
  properties:
  - type: OpenAPI
    url: openapi/algovoi-co-uk-gateway-openapi.yml
  - type: OpenAPI
    name: OpenAPI (provider-hosted)
    url: https://api.algovoi.co.uk/openapi.json
  - type: Documentation
    url: https://docs.algovoi.co.uk/api-reference/introduction
  - type: APIReference
    url: https://docs.algovoi.co.uk/api-reference/introduction
  - type: GettingStarted
    url: https://docs.algovoi.co.uk/quickstart
  - type: Authentication
    url: authentication/algovoi-co-uk-authentication.yml
  - type: Authentication
    name: Authentication (provider docs)
    url: https://docs.algovoi.co.uk/api-reference/authentication
  - type: Conventions
    url: conventions/algovoi-co-uk-conventions.yml
  - type: Idempotency
    url: conventions/algovoi-co-uk-conventions.yml
  - type: ErrorCatalog
    url: errors/algovoi-co-uk-problem-types.yml
  - type: ErrorCodes
    name: API errors and status codes (provider docs)
    url: https://docs.algovoi.co.uk/api-reference/errors
  - type: RateLimits
    url: rate-limits/algovoi-co-uk-rate-limits.yml
  - type: RateLimits
    name: Rate limits (provider docs)
    url: https://docs.algovoi.co.uk/api-reference/rate-limits
  - type: Webhooks
    url: asyncapi/algovoi-co-uk-webhooks.yml
  - type: Webhooks
    name: Outbound webhooks (provider docs)
    url: https://docs.algovoi.co.uk/integrations/outbound-webhooks
  - type: Sandbox
    url: sandbox/algovoi-co-uk-sandbox.yml
  - type: Plans
    url: plans/algovoi-co-uk-plans-pricing.yml
  - type: DataModel
    url: data-model/algovoi-co-uk-data-model.yml
  - type: Overlay
    url: overlays/algovoi-co-uk-gateway-overlay.yaml
  - type: AgentCard
    url: a2a/algovoi-co-uk-a2a.yml
  - type: AgentCard
    name: Agent card (provider-hosted, graded flavored)
    url: https://api.algovoi.co.uk/.well-known/agent-card.json
  - type: AgentSkill
    url: skills/algovoi-co-uk-algovoi.md
  - type: AgentSkill
    url: skills/algovoi-co-uk-hosted-checkout.md
  - type: SignUp
    url: https://dash.algovoi.co.uk/signup
  - type: Components
    url: components/algovoi-co-uk-components.yml
  image: https://algovoi.co.uk/apple-touch-icon.png
- aid: algovoi-co-uk:algovoi-rfc9421-clinic-api
  name: AlgoVoi RFC 9421 Clinic (Verifiable-Comms Agent) API
  description: >-
    Free, anonymous, verify-only service at agents.algovoi.co.uk (OpenAPI 3.1.0 "AlgoVoi Verifiable-Comms Agent" 0.1.0, 9
    operations): verify an RFC 9421 HTTP message signature with RFC 9530 Content-Digest offline against a supplied Ed25519
    key or did:key, get a diagnosis with the exact canonical signature base, or fetch a known-good signed request from an
    ephemeral demo key. Reachable over plain HTTP, A2A JSON-RPC (/a2a; message/send for 0.3.0 and SendMessage for 1.0.1) and
    an anonymous Streamable HTTP MCP server (/mcp) exposing the same tools. Backed by the shipped algovoi-rfc9421-verifier
    0.4.4 package.
  humanURL: https://agents.algovoi.co.uk/clinic/guide
  baseURL: https://agents.algovoi.co.uk
  tags:
  - Digital Signature
  - Verification
  - A2A
  - MCP
  - agent-native
  tags_raw:
  - Digital Signatures
  - Verification
  - A2A
  - MCP
  - Agent-native
  properties:
  - type: OpenAPI
    url: openapi/algovoi-co-uk-clinic-openapi.yml
  - type: OpenAPI
    name: OpenAPI (provider-hosted)
    url: https://agents.algovoi.co.uk/openapi.json
  - type: Documentation
    url: https://agents.algovoi.co.uk/clinic/guide
  - type: Documentation
    name: RFC 9421 verifier reference
    url: https://docs.algovoi.co.uk/rfc9421-verifier
  - type: APIReference
    url: https://agents.algovoi.co.uk/docs
  - type: AgentCard
    url: a2a/algovoi-co-uk-a2a.yml
  - type: AgentCard
    name: Agent card (provider-hosted)
    url: https://agents.algovoi.co.uk/.well-known/agent-card.json
  - type: MCPServer
    url: mcp/algovoi-co-uk-mcp.yml
  - type: MCPServer
    name: MCP endpoint (Streamable HTTP, anonymous)
    url: https://agents.algovoi.co.uk/mcp
  - type: LLMsTxt
    url: llms/algovoi-co-uk-clinic-llms.txt
  - type: LLMsTxt
    name: llms.txt (provider-hosted)
    url: https://agents.algovoi.co.uk/llms.txt
  - type: Authentication
    url: authentication/algovoi-co-uk-authentication.yml
  - type: Overlay
    url: overlays/algovoi-co-uk-clinic-overlay.yaml
  - type: AgentSkill
    url: skills/algovoi-co-uk-rfc9421-clinic.md
  image: https://algovoi.co.uk/apple-touch-icon.png
- aid: algovoi-co-uk:algovoi-agent-trust-bench-api
  name: AlgoVoi Agent Trust Bench API
  description: >-
    Open, provider-neutral x402 research surface (OpenAPI 3.1.0 "AlgoVoi Agent Trust Bench" 0.1.0, 7 operations, servers[]
    https://agent-trust-bench.algovoi.co.uk, MIT): GET /{profile_id} presents one of 187 adversarial or benign payment
    profiles as a 402 challenge (max $1.00 USDC, publicly logged, proceeds donated), /freebie is the always-free control,
    /discovery/resources is a Bazaar-format catalog of every profile, /.well-known/x402.json the discovery manifest and
    /stats.json aggregate statistics. Agents that pass can fetch a Falcon-1024 or Bulletproofs ATB Pass Certificate that
    earns a 20% discount at participating x402 gateways.
  humanURL: https://docs.algovoi.co.uk/agent-trust-bench
  baseURL: https://agent-trust-bench.algovoi.co.uk
  tags:
  - x402
  - Agent Safety
  - Research
  - agent-native
  tags_raw:
  - x402
  - Agent Safety
  - Research
  - Agent-native
  properties:
  - type: OpenAPI
    url: openapi/algovoi-co-uk-agent-trust-bench-openapi.yml
  - type: OpenAPI
    name: OpenAPI (provider-hosted)
    url: https://agent-trust-bench.algovoi.co.uk/openapi.json
  - type: Documentation
    url: https://docs.algovoi.co.uk/agent-trust-bench
  - type: Dashboard
    name: Live bench statistics
    url: https://agent-trust-bench.algovoi.co.uk/stats
  - type: Authentication
    url: authentication/algovoi-co-uk-authentication.yml
  - type: Overlay
    url: overlays/algovoi-co-uk-agent-trust-bench-overlay.yaml
  image: https://algovoi.co.uk/apple-touch-icon.png
- aid: algovoi-co-uk:algovoi-audit-verifier-api
  name: AlgoVoi Audit Verifier API
  description: >-
    Stateless reference verifier for AlgoVoi selective-disclosure audit bundles at verify.algovoi.co.uk (OpenAPI 3.1.0
    "AlgoVoi Audit Verifier" 0.1.0, 3 operations): POST /verify checks a bundle in memory and persists nothing; an optional
    X-Audit-Bundle-Key header verifies the bundle signature. Open source (algovoi-audit-verifier on GitHub); Swagger UI at
    /docs.
  humanURL: https://docs.algovoi.co.uk/audit-verifier
  baseURL: https://verify.algovoi.co.uk
  tags:
  - Verification
  - Compliance
  - Audit
  properties:
  - type: OpenAPI
    url: openapi/algovoi-co-uk-audit-verifier-openapi.yml
  - type: OpenAPI
    name: OpenAPI (provider-hosted)
    url: https://verify.algovoi.co.uk/openapi.json
  - type: Documentation
    url: https://docs.algovoi.co.uk/audit-verifier
  - type: APIReference
    url: https://verify.algovoi.co.uk/docs
  - type: SourceCode
    url: https://github.com/chopmob-cloud/algovoi-audit-verifier
  - type: Overlay
    url: overlays/algovoi-co-uk-audit-verifier-overlay.yaml
  image: https://algovoi.co.uk/apple-touch-icon.png
- aid: algovoi-co-uk:algovoi-mcp-server
  name: AlgoVoi MCP Server
  description: >-
    Model Context Protocol access to AlgoVoi three ways. A hosted anonymous Streamable HTTP endpoint at
    https://agents.algovoi.co.uk/mcp (algovoi-mcp-server 1.29.0, protocol 2025-06-18; tools/list returns three offline RFC
    9421 tools with inputSchema); a hosted x402-gated endpoint at https://mcp.algovoi.co.uk/mcp (ulu-mcp 0.0.1, initialize
    succeeds, tools/list answers 402 with a 1 VOI challenge — tool set unknown); and a local stdio package published to npm
    (@algovoi/mcp-server 1.7.0) and PyPI (algovoi-mcp 1.7.0), listed in the official MCP Registry, exposing 29 tenant-gateway
    tools (payment links, x402/MPP/AP2 challenges and verification, A2A pay-and-call, recurring authorities, MPP
    subscriptions, Bazaar discovery, sanctions screening, compliance attestation) with an algv_ API key.
  humanURL: https://docs.algovoi.co.uk/integrations/mcp-server
  baseURL: https://agents.algovoi.co.uk/mcp
  tags:
  - MCP
  - agent-native
  - Payments
  tags_raw:
  - MCP
  - Agent-native
  - Payments
  properties:
  - type: MCPServer
    url: mcp/algovoi-co-uk-mcp.yml
  - type: MCPServer
    name: MCP endpoint (hosted, anonymous)
    url: https://agents.algovoi.co.uk/mcp
  - type: MCPServer
    name: MCP endpoint (hosted, x402-gated)
    url: https://mcp.algovoi.co.uk/mcp
  - type: ToolCrosswalk
    url: mcp/algovoi-co-uk-tool-crosswalk.yml
  - type: Documentation
    url: https://docs.algovoi.co.uk/integrations/mcp-server
  - type: SourceCode
    url: https://github.com/chopmob-cloud/AlgoVoi-MCP-Server
  - type: Packages
    url: packages/algovoi-co-uk-packages.yml
  - type: OpenAPI
    url: openapi/algovoi-co-uk-gateway-openapi.yml
  image: https://algovoi.co.uk/apple-touch-icon.png
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/algovoi-co-uk-domain-security.yml
- type: AgenticAccess
  url: agentic-access/algovoi-co-uk-agentic-access.yml
- type: Website
  url: https://algovoi.co.uk/
- type: DeveloperPortal
  url: https://docs.algovoi.co.uk
- type: Documentation
  url: https://docs.algovoi.co.uk/introduction
- type: APIReference
  url: https://docs.algovoi.co.uk/api-reference/introduction
- type: GettingStarted
  url: https://docs.algovoi.co.uk/quickstart
- type: Support
  url: https://docs.algovoi.co.uk/support
- type: GitHubOrganization
  url: https://github.com/chopmob-cloud
- type: Pricing
  url: https://algovoi.co.uk/pricing.html
- type: Pricing
  name: Trial and pricing (gateway)
  url: https://docs.algovoi.co.uk/trial-and-pricing
- type: SignUp
  url: https://dash.algovoi.co.uk/signup
- type: Login
  url: https://dash.algovoi.co.uk
- type: TermsOfService
  url: https://algovoi.co.uk/terms.html
- type: PrivacyPolicy
  url: https://algovoi.co.uk/privacy-policy.html
- type: Compliance
  url: https://algovoi.co.uk/compliance.html
- type: Compliance
  name: Machine-readable compliance attestation
  url: https://api.algovoi.co.uk/compliance/attestation
- type: Security
  url: https://docs.algovoi.co.uk/security
- type: SecurityTxt
  url: well-known/algovoi-co-uk-security.txt
- type: SecurityTxt
  name: security.txt (provider-hosted)
  url: https://algovoi.co.uk/.well-known/security.txt
- type: VulnerabilityDisclosure
  url: security/algovoi-co-uk-vulnerability-disclosure.yml
- type: ChangeLog
  url: changelog/algovoi-co-uk-changelog.yml
- type: ChangeLog
  name: Changelog (provider-hosted)
  url: https://docs.algovoi.co.uk/changelog
- type: Lifecycle
  url: lifecycle/algovoi-co-uk-lifecycle.yml
- type: LLMsTxt
  url: llms/algovoi-co-uk-llms.txt
- type: LLMsTxt
  name: llms.txt (provider-hosted, apex)
  url: https://algovoi.co.uk/llms.txt
- type: LLMsTxt
  name: llms.txt (docs)
  url: llms/algovoi-co-uk-docs-llms.txt
- type: LLMsTxt
  name: llms.txt (provider-hosted, docs)
  url: https://docs.algovoi.co.uk/llms.txt
- type: AgentCard
  url: a2a/algovoi-co-uk-a2a.yml
- type: MCPServer
  url: mcp/algovoi-co-uk-mcp.yml
- type: ToolCrosswalk
  url: mcp/algovoi-co-uk-tool-crosswalk.yml
- type: WellKnown
  url: well-known/algovoi-co-uk-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgentSkill
  name: Agent Skill (provider-hosted)
  url: https://docs.algovoi.co.uk/.well-known/agent-skills/algovoi/skill.md
- type: Conformance
  url: conformance/algovoi-co-uk-conformance.yml
- type: ErrorCatalog
  url: errors/algovoi-co-uk-problem-types.yml
- type: Authentication
  url: authentication/algovoi-co-uk-authentication.yml
- type: Conventions
  url: conventions/algovoi-co-uk-conventions.yml
- type: Idempotency
  url: conventions/algovoi-co-uk-conventions.yml
- type: Webhooks
  url: asyncapi/algovoi-co-uk-webhooks.yml
- type: RateLimits
  url: rate-limits/algovoi-co-uk-rate-limits.yml
- type: Plans
  url: plans/algovoi-co-uk-plans-pricing.yml
- type: Sandbox
  url: sandbox/algovoi-co-uk-sandbox.yml
- type: Packages
  url: packages/algovoi-co-uk-packages.yml
- type: SDKs
  url: packages/algovoi-co-uk-packages.yml
- type: SDKs
  name: Native SDKs (Go, PHP, Python, Rust)
  url: https://docs.algovoi.co.uk/integrations/native-sdks
- type: Components
  url: components/algovoi-co-uk-components.yml
- type: DataModel
  url: data-model/algovoi-co-uk-data-model.yml
- type: Overlay
  url: overlays/algovoi-co-uk-gateway-overlay.yaml
- type: Subprocessors
  url: https://docs.algovoi.co.uk/compliance#subprocessors
- type: IncidentNotification
  url: https://docs.algovoi.co.uk/security#incident-response
- type: DataSubjectRequest
  url: https://algovoi.co.uk/privacy-policy.html#your-rights
- type: AITransparency
  url: https://algovoi.co.uk/run-by-a-secure-agent-workforce.html
- type: RegulatoryPosture
  url: regulatory/algovoi-co-uk-regulatory-posture.yml
- type: Store
  name: Suite store
  url: https://api.algovoi.co.uk/suite-store
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 69
  pass: local-v3