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The directory of tools for agents

2,692 tools · Verify a proof · Reset filters
Use case: proof · signature
Protocols: MCPA2AAPIx402
Pricing: 0.002 USDC / receipt

Signed declarations of agent execution. Integrity verification does not establish that the declared action happened.

Listing info 100/100
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Use case: proof · verification
Protocols: —
Pricing: Free

Free browser and offline proof verification with independently trusted keys. No certification of factual accuracy.

Listing info 90/100
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Use case: proof · api
Protocols: MCPAPIx402
Pricing: 0.002 USDC / receipt

Signed commitments to caller-declared HTTP exchanges; no independent observation of the origin or response.

Listing info 100/100
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Use case: documents
Protocols: MCPAPI
Pricing: Price not supplied by publisher

Free e-signature for humans and AI agents — zero-document PDF signing from hashes only.

Listing info 70/100
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veritasacta-verify

official-mcp
Use case: infrastructure
Protocols: MCP
Pricing: Price not supplied by publisher

Offline receipt verifier. Ed25519 signature verification without contacting any server.

Listing info 65/100
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ProofSlip

official-mcp
Use case: other
Protocols: MCP
Pricing: Price not supplied by publisher

Receipt-based verification for AI agent workflows — create, verify, and poll ephemeral proof objects

Listing info 65/100
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Use case: other
Protocols: APIx402
Pricing: 0.005 USDC / call (eip155:8453); 5000 atomic units of 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 (eip155:137); 5000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp)

Verify a genesis402 signed receipt — signature and hash-chain position — Genesis402 / UnyKorn Operator Network

Listing info 80/100
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Use case: finance
Protocols: APIx402
Pricing: 0.002 USDC / call (eip155:8453); 2000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp)

Formatted settlement receipt for any Base transaction hash or Solana signature: timestamp, status, decoded token transfers, explorer link — re…

Listing info 80/100
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Use case: documents
Protocols: APIx402
Pricing: 0.05 USDC / call (eip155:8453)

Register a file SHA-256 with Securaw/TimeChain2 and receive a downloadable OpenTimestamps proof directly binding its original bytes. ZIP inclu…

Listing info 80/100
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Use case: other
Protocols: APIx402
Pricing: 0.01 USDC / call (eip155:8453)

Virtuals Solana DBC State & Supply Receipt. Virtuals Solana launches only. Returns finalized mint controls, ACTIVE_DBC vault custody, tokens o…

Listing info 80/100
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Oblique Markets

x402-bazaar
Use case: other
Protocols: APIx402
Pricing: 0.002 USDC / call (eip155:8453); 2000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp)

Use when an agent needs x402 receipt lookup. Returns Fetch a previously issued settlement-verify receipt by verification_id: returns the store…

Listing info 80/100
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Use case: commerce
Protocols: APIx402
Pricing: 0.99 USDC / call (eip155:8453); 990000 atomic units of 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 (eip155:137); 990000 atomic units of 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 (eip155:42161); 990000 atomic units of 0x79a02482a880bce3f13e09da970dc34db4cd24d1 (eip155:480); 990000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp)

The Calling Card. REQUIRES ?url= on the paid request — a signed request without it is refused before the gate and no money moves. A signed JSO…

Listing info 80/100
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